593 lines
23 KiB
Python
593 lines
23 KiB
Python
# -*- python -*-
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# -*- coding: utf-8 -*-
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#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2000-2006 Donald N. Allingham
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id:PlaceUtils.py 9912 2008-01-22 09:17:46Z acraphae $
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# Written by Benny Malengier
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#-------------------------------------------------------------------------
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#
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# Standard python modules
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#
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#-------------------------------------------------------------------------
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from gettext import gettext as _
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#-------------------------------------------------------------------------
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#
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# begin localisation part
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#
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#-------------------------------------------------------------------------
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# translation of N/S/E/W, make sure translator understands
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degrees = "1"
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North = _("%(north_latitude)s N") % {'north_latitude' : degrees}
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South = _("%(south_latitude)s S") % {'south_latitude' : degrees}
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East = _("%(east_longitude)s E") % {'east_longitude' : degrees}
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West = _("%(west_longitude)s W") % {'west_longitude' : degrees}
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# extract letters we really need
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North = North.replace("1"," ").strip()
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South = South.replace("1"," ").strip()
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East = East.replace("1"," ").strip()
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West = West.replace("1"," ").strip()
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# build dictionary with translation en to local language
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translate_en_loc = {}
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translate_en_loc['N'] = North
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translate_en_loc['S'] = South
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translate_en_loc['E'] = East
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translate_en_loc['W'] = West
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# keep translation only if it does not conflict with english
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if 'N' == South or 'S' == North or 'E' == West or 'W' == East:
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translate_en_loc['N'] = 'N'
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translate_en_loc['S'] = 'S'
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translate_en_loc['E'] = 'E'
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translate_en_loc['W'] = 'W'
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# end localisation part
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#-------------------------------------------------------------------------
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#
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# conversion function
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#
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#-------------------------------------------------------------------------
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def conv_lat_lon(latitude, longitude, format="D.D4"):
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"""
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Convert given string latitude and longitude to a required format.
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Possible formats:
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'D.D4' : degree notation, 4 decimals
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eg +12.0154 , -124.3647
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'D.D8' : degree notation, 8 decimals (precision like ISO-DMS)
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eg +12.01543265 , -124.36473268
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'DEG' : degree, minutes, seconds notation
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eg 50°52'21.92''N , 124°52'21.92''E
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'DEG-:' : degree, minutes, seconds notation with :
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eg -50:52:21.92 , 124:52:21.92
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'ISO-D' : ISO 6709 degree notation i.e. ±DD.DDDD±DDD.DDDD
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'ISO-DM' : ISO 6709 degree, minutes notation
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i.e. ±DDMM.MMM±DDDMM.MMM
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'ISO-DMS' : ISO 6709 degree, minutes, seconds notation
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i.e. ±DDMMSS.SS±DDDMMSS.SS
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Return value: a tuple of 2 strings, or a string (for ISO formats)
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If conversion fails: returns: (None, None) or None (for ISO formats)
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Some generalities:
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-90 <= latitude <= +90 with +00 the equator
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-180 <= longitude < +180 with +000 prime meridian
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and -180 180th meridian
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"""
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#-------------------------------------------------------------------------
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# begin internal function converting one input to float
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#-------------------------------------------------------------------------
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def convert_float_val(val, typedeg = "lat"):
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# function converting input to float, recognizing decimal input, or
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# degree notation input. Only english input
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# There is no check on maximum/minimum of degree
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# In case of degree minutes seconds direction input,
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# it is checked that degree >0, 0<= minutes <= 60,
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# 0<= seconds <= 60, direction is in the directions dic.
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v = None
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sign = None
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secs = None
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mins = None
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degs = None
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error = False
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#change , to . so that , input works in non , localization
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#this is no problem, as a number like 100,000.20 cannot appear in
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#lat/lon
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try :
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test = float('10,11')
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except ValueError :
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#change 10,11 into 10.11
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#if point is already present in val, we can do nothing
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if val.find(r'.') == -1 :
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val = val.replace( r',',r'.')
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try :
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test = float('10.11')
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except ValueError :
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#change 10.11 into 10,11
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#if comma is already present in val, we can do nothing
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if val.find(r',') == -1 :
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val = val.replace( r'.',r',')
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try:
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v = float(val) #decimal notation, now float
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except ValueError:
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# look for : notation
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if val.find(r':') != -1 :
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l = val.split(':')
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if len(l) < 2 or len(l) > 3:
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error = True
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l[0]=l[0].strip()
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if l[0][0] == '-':
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sign = '-'
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l[0]=l[0][1:]
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else:
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sign = '+'
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try:
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degs = int(l[0])
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if degs < 0:
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error = True
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except:
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error = True
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try:
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mins = int(l[1])
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if mins < 0 or mins >= 60:
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error = True
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except:
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error = True
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secs=0.
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if len(l) == 3:
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try:
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secs = float(l[2])
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if secs < 0. or secs >= 60.:
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error = True
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except:
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error = True
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# if nothing found yet, look for classical notation
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if val.find(r'_') != -1:
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error = True # not a valid lat or lon
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val = val.replace( r'°',r'_')
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#allow to input ° as #
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val = val.replace( r'#',r'_')
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#allow to input " as ''
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val = val.replace( r"''",r'"')
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#allow some special unicode symbols
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val = val.replace( u'\u2033',r'"')
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val = val.replace( u'\u2032',r"'")
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#ignore spaces
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val = val.replace(r'\s*', r'')
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# get the degrees, must be present
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if val.find(r'_') != -1:
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l = val.split('_')
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if len(l) != 2:
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error = True
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else:
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try:
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degs = int(l[0]) #degrees must be integer value
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if degs < 0:
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error = True
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except:
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error = True
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# next: minutes might be present once
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l2 = l[1].split(r"'")
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l3 = l2
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mins = 0
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if len(l2) > 2:
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error = True
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if len(l2) == 2:
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l3 = [l2[1],]
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try:
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mins = int(l2[0]) #minutes must be integer value
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if mins < 0 or mins >= 60:
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error = True
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except:
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error = True
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# next: seconds might be present once
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l3 = l3[0].split(r'"')
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last = l3[0]
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secs = 0.
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if len(l3) > 2:
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error = True
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if len(l3) == 2:
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last = l3[1]
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try:
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secs = float(l3[0])
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if secs < 0. or secs >= 60.:
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error = True
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except:
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error = True
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# last entry should be the direction
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last = last.strip() #remove leading/trailing spaces
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if typedeg == 'lat':
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if last == 'N':
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sign = '+'
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elif last == 'S':
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sign = '-'
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else:
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error = True
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if typedeg == 'lon':
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if last == 'E':
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sign = '+'
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elif last == 'W':
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sign = '-'
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else:
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error = True
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# degs should have a value now
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if degs is None:
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error = True
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if error:
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return None
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if v is not None:
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return v
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#we have a degree notation, convert to float
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v = float(degs)
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if secs is not None:
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v += secs / 3600.
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if mins is not None:
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v += float(mins) / 60.
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if sign =="-":
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v = v * -1.
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return v
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#-------------------------------------------------------------------------
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# end internal function converting one input to float
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#-------------------------------------------------------------------------
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#-------------------------------------------------------------------------
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# begin convert function
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#-------------------------------------------------------------------------
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# we start the function changing latitude/longitude in english
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if latitude.find('N') == -1 and latitude.find('S') == -1:
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# entry is not in english, convert to english
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latitude = latitude.replace(translate_en_loc['N'],'N')
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latitude = latitude.replace(translate_en_loc['S'],'S')
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if longitude.find('E') == -1 and longitude.find('W') == -1:
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# entry is not in english, convert to english
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longitude = longitude.replace(translate_en_loc['W'],'W')
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longitude = longitude.replace(translate_en_loc['E'],'E')
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# convert to float
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lat_float = convert_float_val(latitude, 'lat')
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lon_float = convert_float_val(longitude, 'lon')
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# give output (localized if needed)
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if lat_float is None or lon_float is None:
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if format == "ISO-D" or format == "ISO-DM" or format == "ISO-DMS":
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return None
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else:
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return (None, None)
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if lat_float > 90. or lat_float < -90. \
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or lon_float >= 180. or lon_float < -180.:
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if format == "ISO-D" or format == "ISO-DM" or format == "ISO-DMS":
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return None
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else:
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return (None, None)
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if format == "D.D4":
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# correct possible roundoff error
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str_lon = "%.4f" % (lon_float)
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if str_lon == "180.0000":
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str_lon ="-180.0000"
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return ("%.4f" % lat_float , str_lon)
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if format == "D.D8":
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# correct possible roundoff error
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str_lon = "%.8f" % (lon_float)
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if str_lon == "180.00000000":
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str_lon ="-180.00000000"
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return ("%.8f" % lat_float , str_lon)
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deg_lat = int(lat_float)
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deg_lon = int(lon_float)
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min_lat = int(60. * (lat_float - float(deg_lat) ))
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min_lon = int(60. * (lon_float - float(deg_lon) ))
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sec_lat = 3600. * (lat_float - float(deg_lat) - float(min_lat) / 60.)
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sec_lon = 3600. * (lon_float - float(deg_lon) - float(min_lon) / 60.)
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# dump minus sign on all, store minus sign. Carefull: int(-0.8)=0 !!
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if (deg_lat) < 0:
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deg_lat = -1 * deg_lat
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if (min_lat) < 0:
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min_lat = -1 * min_lat
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if (sec_lat) < 0.:
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sec_lat = -1. * sec_lat
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if (deg_lon) < 0:
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deg_lon = -1 * deg_lon
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if (min_lon) < 0:
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min_lon = -1 * min_lon
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if (sec_lon) < 0.:
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sec_lon = -1. * sec_lon
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# keep sign as -1* 0 = +0, so 0°2'S is given correct sign in ISO
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sign_lat = "+"
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dir_lat = ""
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if lat_float >= 0.:
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dir_lat = translate_en_loc['N']
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else:
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dir_lat = translate_en_loc['S']
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sign_lat= "-"
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sign_lon= "+"
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dir_lon = ""
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if lon_float >= 0.:
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dir_lon = translate_en_loc['E']
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else:
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dir_lon = translate_en_loc['W']
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sign_lon= "-"
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if format == "DEG":
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str_lat = ("%d°%02d'%05.2f\"" % (deg_lat, min_lat, sec_lat)) + dir_lat
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str_lon = ("%d°%02d'%05.2f\"" % (deg_lon, min_lon, sec_lon)) + dir_lon
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# correct possible roundoff error in seconds
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if str_lat[-6-len(dir_lat)] == '6':
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if min_lat == 59:
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str_lat = ("%d°%02d'%05.2f\"" % (deg_lat+1, 0, 0.)) + dir_lat
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else:
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str_lat = ("%d°%02d'%05.2f\"" % (deg_lat, min_lat+1, 0.)) \
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+ dir_lat
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if str_lon[-6-len(dir_lon)] == '6':
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if min_lon == 59:
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if deg_lon == 179 and sign_lon == "+":
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str_lon = ("%d°%02d'%05.2f\"" % (180, 0, 0.)) \
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+ translate_en_loc['W']
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else:
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str_lon = ("%d°%02d'%05.2f\"" % (deg_lon+1, 0, 0.)) \
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+ dir_lon
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else:
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str_lon = ("%d°%02d'%05.2f\"" % (deg_lon, min_lon+1, 0.)) \
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+ dir_lon
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return (str_lat, str_lon)
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if format == "DEG-:":
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if sign_lat=="+":
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sign_lat = ""
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sign_lon_h = sign_lon
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if sign_lon=="+":
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sign_lon_h = ""
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str_lat = sign_lat + ("%d:%02d:%05.2f" % (deg_lat, min_lat, sec_lat))
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str_lon = sign_lon_h + ("%d:%02d:%05.2f" % (deg_lon, min_lon, sec_lon))
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# correct possible roundoff error in seconds
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if str_lat[-5] == '6':
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if min_lat == 59:
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str_lat = sign_lat + ("%d:%02d:%05.2f" % (deg_lat+1, 0, 0.))
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else:
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str_lat = sign_lat + \
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("%d:%02d:%05.2f" % (deg_lat, min_lat+1, 0.))
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if str_lon[-5] == '6':
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if min_lon == 59:
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if deg_lon == 179 and sign_lon == "+":
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str_lon = '-' + ("%d:%02d:%05.2f" % (180, 0, 0.))
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else:
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str_lon = sign_lon_h + \
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("%d:%02d:%05.2f" % (deg_lon+1, 0, 0.))
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else:
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str_lon = sign_lon_h + \
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("%d:%02d:%05.2f" % (deg_lon, min_lon+1, 0.))
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return (str_lat, str_lon)
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if format == "ISO-D": # ±DD.DDDD±DDD.DDDD
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str_lon = "%+09.4f" % (lon_float)
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# correct possible roundoff error
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if str_lon == "+180.0000":
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str_lon = "-180.0000"
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return ("%+08.4f" % lat_float) + str_lon
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if format == "ISO-DM": # ±DDMM.MMM±DDDMM.MMM
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min_fl_lat = float(min_lat)+ sec_lat/60.
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min_fl_lon = float(min_lon)+ sec_lon/60.
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str_lat = sign_lat + ("%02d%06.3f" % (deg_lat, min_fl_lat))
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str_lon = sign_lon + ("%03d%06.3f" % (deg_lon, min_fl_lon))
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# correct possible roundoff error
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if str_lat[3:] == "60.000":
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str_lat = sign_lat + ("%02d%06.3f" % (deg_lat+1, 0.))
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if str_lon[4:] == "60.000":
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if deg_lon == 179 and sign_lon == "+":
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str_lon = "-" + ("%03d%06.3f" % (180, 0.))
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else:
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str_lon = sign_lon + ("%03d%06.3f" % (deg_lon+1, 0.))
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return str_lat + str_lon
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if format == "ISO-DMS": # ±DDMMSS.SS±DDDMMSS.SS
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str_lat = sign_lat + ("%02d%02d%06.3f" % (deg_lat, min_lat, sec_lat))
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str_lon = sign_lon + ("%03d%02d%06.3f" % (deg_lon, min_lon, sec_lon))
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# correct possible roundoff error
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if str_lat[5:] == "60.000":
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if min_lat == 59:
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str_lat = sign_lat + ("%02d%02d%06.3f" % (deg_lat+1, 0, 0.))
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else:
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str_lat = sign_lat + \
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("%02d%02d%06.3f" % (deg_lat, min_lat +1, 0.))
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if str_lon[6:] == "60.000":
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if min_lon == 59:
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if deg_lon == 179 and sign_lon == "+":
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str_lon = "-" + ("%03d%02d%06.3f" % (180, 0, 0))
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else:
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str_lon = sign_lon + \
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("%03d%02d%06.3f" % (deg_lon+1, 0, 0.))
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else:
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str_lon = sign_lon + \
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("%03d%02d%06.3f" % (deg_lon, min_lon+1, 0.))
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return str_lat + str_lon
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#-------------------------------------------------------------------------
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# end convert function
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#-------------------------------------------------------------------------
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#-------------------------------------------------------------------------
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#
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# For Testing the convert function in this module, apply it as a script:
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# ==> in command line do "python PlaceUtils.py"
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#
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#-------------------------------------------------------------------------
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if __name__ == '__main__':
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def test_formats_success(lat1,lon1, text=''):
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format0 = "D.D4"
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format1 = "D.D8"
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format2 = "DEG"
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format3 = "DEG-:"
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format4 = "ISO-D"
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format5 = "ISO-DM"
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format6 = "ISO-DMS"
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print "Testing conv_lat_lon function, "+text+':'
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res1, res2 = conv_lat_lon(lat1,lon1,format0)
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print lat1,lon1,"in format",format0, "is ",res1,res2
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res1, res2 = conv_lat_lon(lat1,lon1,format1)
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print lat1,lon1,"in format",format1, "is ",res1,res2
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res1, res2 = conv_lat_lon(lat1,lon1,format2)
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print lat1,lon1,"in format",format2, "is ",res1,res2
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res1, res2 = conv_lat_lon(lat1,lon1,format3)
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print lat1,lon1,"in format",format3, "is ",res1,res2
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res = conv_lat_lon(lat1,lon1,format4)
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print lat1,lon1,"in format",format4, "is ",res
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res = conv_lat_lon(lat1,lon1,format5)
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print lat1,lon1,"in format",format5, "is",res
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res = conv_lat_lon(lat1,lon1,format6)
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print lat1,lon1,"in format",format6, "is",res,"\n"
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def test_formats_fail(lat1,lon1,text=''):
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print "This test should make conv_lat_lon function fail, "+text+":"
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res1, res2 = conv_lat_lon(lat1,lon1)
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print lat1,lon1," fails to convert, result=", res1,res2,"\n"
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lat, lon = '50.849888888888', '2.885897222222'
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test_formats_success(lat,lon)
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lat, lon = ' 50°50\'59.60"N', ' 2°53\'9.23"E'
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test_formats_success(lat,lon)
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lat, lon = ' 50 : 50 : 59.60 ', ' -2:53 : 9.23 '
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test_formats_success(lat,lon)
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lat, lon = ' dummy', ' 2#53 \' 9.23 " E '
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test_formats_fail(lat,lon)
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lat, lon = ' 50:50: 59.60', ' d u m my'
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test_formats_fail(lat,lon)
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lat, lon = ' 50°59.60"N', ' 2°53\'E'
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test_formats_success(lat,lon)
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# very small negative
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lat, lon = '-0.00006', '-0.00006'
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test_formats_success(lat,lon)
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# missing direction N/S
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lat, lon = ' 50°59.60"', ' 2°53\'E'
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test_formats_fail(lat,lon)
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# wrong direction on latitude
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lat, lon = ' 50°59.60"E', ' 2°53\'N'
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test_formats_fail(lat,lon)
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# same as above
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lat, lon = ' 50°59.99"E', ' 2°59\'59.99"N'
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test_formats_fail(lat,lon)
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|
# test precision
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|
lat, lon = ' 50°59.99"S', ' 2°59\'59.99"E'
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test_formats_success(lat,lon)
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|
# to large value of lat
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|
lat, lon = '90.849888888888', '2.885897222222'
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test_formats_fail(lat,lon)
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|
# extreme values allowed
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|
lat, lon = '90', '-180'
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test_formats_success(lat,lon)
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|
# extreme values allowed
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|
lat, lon = '90° 00\' 00.00" S ', '179° 59\'59.99"W'
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test_formats_success(lat,lon)
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|
# extreme value not allowed
|
|
lat, lon = '90° 00\' 00.00" N', '180° 00\'00.00" E'
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|
test_formats_fail(lat,lon)
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|
# extreme values allowed
|
|
lat, lon = '90: 00: 00.00 ', '-179: 59:59.99'
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|
test_formats_success(lat,lon)
|
|
# extreme value not allowed
|
|
lat, lon = '90° 00\' 00.00" N', '180:00:00.00'
|
|
test_formats_fail(lat,lon)
|
|
# extreme values not allowed
|
|
lat, lon = '90', '180'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = ' 89°59\'60"N', ' 2°53\'W'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = ' 89°60\'00"N', ' 2°53\'W'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = ' 89.1°40\'00"N', ' 2°53\'W'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = ' 89°40\'00"N', ' 2°53.1\'W'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '0', '0'
|
|
test_formats_success(lat,lon,
|
|
"Special 0 value, crossing 0-meridian and equator")
|
|
# small values close to equator
|
|
lat, lon = ' 1°1"N', ' 1°1\'E'
|
|
test_formats_success(lat,lon)
|
|
# roundoff
|
|
lat, lon = ' 1°59.999"N', ' 1°59.999"E'
|
|
test_formats_success(lat,lon,'Examples of round off and how it behaves')
|
|
lat, lon = ' 1°59\'59.9999"N', ' 1°59\'59.9999"E'
|
|
test_formats_success(lat,lon,'Examples of round off and how it behaves')
|
|
lat, lon = '89°59\'59.9999"S', '179°59\'59.9999"W'
|
|
test_formats_success(lat,lon,'Examples of round off and how it behaves')
|
|
lat, lon = '89°59\'59.9999"N', '179°59\'59.9999"E'
|
|
test_formats_success(lat,lon,'Examples of round off and how it behaves')
|
|
#insane number of decimals:
|
|
lat, lon = '89°59\'59.99999999"N', '179°59\'59.99999999"E'
|
|
test_formats_success(lat,lon,'Examples of round off and how it begaves')
|
|
#recognise '' as seconds "
|
|
lat, lon = '89°59\'59.99\'\' N', '179°59\'59.99\'\'E'
|
|
test_formats_success(lat,lon, "input \" as ''")
|
|
#test localisation of , and . as delimiter
|
|
lat, lon = '50.849888888888', '2,885897222222'
|
|
test_formats_success(lat,lon, 'localisation of . and , ')
|
|
lat, lon = '89°59\'59.9999"S', '179°59\'59,9999"W'
|
|
test_formats_success(lat,lon, 'localisation of . and , ')
|
|
lat, lon = '89°59\'1.599,999"S', '179°59\'59,9999"W'
|
|
test_formats_fail(lat,lon, 'localisation of . and , ')
|
|
#rest
|
|
lat, lon = '81.2', '-182.3'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '-91.2', '-1'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '++50:10:1', '2:1:2'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '-50:10:1', '-+2:1:2'
|
|
test_formats_success(lat,lon)
|
|
lat, lon = '-50::1', '-2:1:2'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '- 50 : 2 : 1 ', '-2:1:2'
|
|
test_formats_success(lat,lon)
|
|
lat, lon = '+ 50:2 : 1', '-2:1:2'
|
|
test_formats_success(lat,lon)
|
|
lat, lon = '+50:', '-2:1:2'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '+50:1', '-2:1:2'
|
|
test_formats_success(lat,lon)
|
|
lat, lon = '+50: 0 : 1 : 1', '-2:1:2'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '+61° 43\' 60.00"', '+17° 7\' 60.00"'
|
|
test_formats_fail(lat,lon)
|
|
lat, lon = '+61° 44\' 00.00"N', '+17° 8\' 00.00"E'
|
|
test_formats_success(lat,lon)
|
|
|