[OSGeo-Discuss] Re: parsing coordinates

Wed Apr 22 19:25:32 PDT 2009

I've not used it myself, so I'm not sure how viable it is, but there is this PECL extension http://pecl.php.net/package/python that apparently lets you use Python from within PHP if you can't find a better native solution.

cheers

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________________________________

From: discuss-bounces at lists.osgeo.org on behalf of pere roca ristol
Sent: Wed 22/04/2009 15:46
To: discuss at lists.osgeo.org
Subject: [OSGeo-Discuss] Re: parsing coordinates

  dear all,
  I develop in PHP and have almost no idea about Python and Perl, but thank you anyway for the information.

  best regards,
  Pere 

2009/4/21 <discuss-request at lists.osgeo.org>

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	Today's Topics:

	  1. Re: parsing coordinates (Tim Michelsen)
	  2. Re: Re: parsing coordinates (Mateusz Loskot)
	  3. Re: Re: parsing coordinates (Mateusz Loskot)
	  4. Re: parsing coordinates (Arnulf Christl)

	----------------------------------------------------------------------

	Message: 1
	Date: Mon, 20 Apr 2009 23:09:42 +0200
	From: Tim Michelsen <timmichelsen at gmx-topmail.de>
	Subject: [OSGeo-Discuss] Re: parsing coordinates
	To: discuss at mail.osgeo.org
	Message-ID: <gsioam$7u0$2 at ger.gmane.org>
	Content-Type: text/plain; charset=ISO-8859-1; format=flowed

	>     * 40:26:46N,79:56:55W
	>     * 40:26:46.302N 79:56:55.903W
	>     * 40°26'21"N 79°58'36"W
	>     * 40d 26' 21" N 79d 58' 36" W
	>     * 40.446195N 79.948862W
	>     * 40.446195, -79.948862
	>     * 40° 26.7717, -79° 56.93172
	>
	>
	> I'm aware that parsing and interpreting free-text coordinate
	> descriptions is quite complex, maybe someone knows a script (or a remote
	> service) that does a similar job?
	I did some of this for python.
	What langauge will you use?

	Please report if you find some useful libraries.

	Kind regards,
	Timmie

	------------------------------

	Message: 2
	Date: Tue, 21 Apr 2009 09:26:21 +0100
	From: Mateusz Loskot <mateusz at loskot.net>
	Subject: Re: [OSGeo-Discuss] Re: parsing coordinates
	To: OSGeo Discussions <discuss at lists.osgeo.org>
	Cc: discuss at mail.osgeo.org
	Message-ID: <49ED832D.7060704 at loskot.net>
	Content-Type: text/plain; charset=UTF-8; format=flowed

	Tim Michelsen wrote:
	>     * 40:26:46N,79:56:55W
	>     * 40:26:46.302N 79:56:55.903W
	>     * 40°26'21"N 79°58'36"W
	>     * 40d 26' 21" N 79d 58' 36" W
	>     * 40.446195N 79.948862W
	>     * 40.446195, -79.948862
	>     * 40° 26.7717, -79° 56.93172
	>
	> I'm aware that parsing and interpreting free-text coordinate
	> descriptions is quite complex, maybe someone knows a script (or a
	> remote service) that does a similar job?

	Long time ago I made a script solving similar problems:

	http://mateusz.loskot.net/software/gis/pydecimaldegrees/

	It is very easy to extend it to support all the format
	variations you've listed above.

	Best regards,
	--
	Mateusz Loskot, http://mateusz.loskot.net <http://mateusz.loskot.net/> 
	Charter Member of OSGeo, http://osgeo.org <http://osgeo.org/> 

	------------------------------

	Message: 3
	Date: Tue, 21 Apr 2009 09:26:21 +0100
	From: Mateusz Loskot <mateusz at loskot.net>
	Subject: Re: [OSGeo-Discuss] Re: parsing coordinates
	To: OSGeo Discussions <discuss at lists.osgeo.org>
	Cc: discuss at mail.osgeo.org
	Message-ID: <49ED832D.7060704 at loskot.net>
	Content-Type: text/plain; charset=UTF-8; format=flowed

	Tim Michelsen wrote:
	>     * 40:26:46N,79:56:55W
	>     * 40:26:46.302N 79:56:55.903W
	>     * 40°26'21"N 79°58'36"W
	>     * 40d 26' 21" N 79d 58' 36" W
	>     * 40.446195N 79.948862W
	>     * 40.446195, -79.948862
	>     * 40° 26.7717, -79° 56.93172
	>
	> I'm aware that parsing and interpreting free-text coordinate
	> descriptions is quite complex, maybe someone knows a script (or a
	> remote service) that does a similar job?

	Long time ago I made a script solving similar problems:

	http://mateusz.loskot.net/software/gis/pydecimaldegrees/

	It is very easy to extend it to support all the format
	variations you've listed above.

	Best regards,
	--
	Mateusz Loskot, http://mateusz.loskot.net <http://mateusz.loskot.net/> 
	Charter Member of OSGeo, http://osgeo.org <http://osgeo.org/> 

	------------------------------

	Message: 4
	Date: Tue, 21 Apr 2009 16:39:43 +0200
	From: Arnulf Christl <arnulf.christl at wheregroup.com>
	Subject: Re: [OSGeo-Discuss] parsing coordinates
	To: OSGeo Discussions <discuss at lists.osgeo.org>
	Message-ID: <49EDDAAF.9030507 at wheregroup.com>
	Content-Type: text/plain; charset=ISO-8859-1

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	pere roca ristol schrieb:
	> hi all,
	>
	>
	> I'm developing a webapplication that let's user upload their point data and
	> play with it.
	>
	> It currently works with lat/long in a CSV with this format (eg: *0.44, -79.9
	> *) but we find users with some of these also valid and acceptable ways to
	> write geographic coordinates:
	>
	>    - 40:26:46N,79:56:55W
	>    - 40:26:46.302N 79:56:55.903W
	>    - 40°26'21"N 79°58'36"W
	>    - 40d 26' 21" N 79d 58' 36" W
	>    - 40.446195N 79.948862W
	>    - 40.446195, -79.948862
	>    - 40° 26.7717, -79° 56.93172
	>
	>
	> I'm aware that parsing and interpreting free-text coordinate descriptions is
	> quite complex, maybe someone knows a script (or a remote service) that does
	> a similar job?
	>
	>
	> It would be very helpful.
	>
	> Thanks!
	>
	>
	> Pere

	Potentially adding to your woes you should take into account that people
	mix up axis order. It is a well established traditional fight between
	developers, geodesists and the rest of the world. This page [1] sums up
	the main issue. If you find a script that dares to deal with this, feel
	free to add it as a link to that page.

	Best regards,
	Arnulf.

	[1] http://wiki.osgeo.org/wiki/Axis_Order_Confusion
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-- 
Pere Roca Ristol
Biòleg i especialista GIS
Museo Nacional de Ciencias Naturales (CSIC)
Visita l'EDIT mapViewer! 
http://edit.csic.es/edit_geo/prototype/edit.html

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