Re: [mapserver-users] pointObj-project behaviour differences from 4.10 to 5.6 versions
Hi,
I have been doing more tests to try to identify exactly the problem and I
ahve realized that, according to http://twcc.free.fr/, the coordinates
returned when working with php_mapscript from version 4.10 are not correct.
I am trying to get where is the problem, so that I can decide wether
sorting out a The issue is that the function project returns different
things depending on the server configuration:
Input coordinates in Google Spherical Mercator:
(-20500513.477395,-3641436.
715144)
Server 1: proj 4.1.5 and MapServer 4.10 returns
(-90270074.105905,-216622133.8792)
Server 2: proj 4.1.7 and MapServer 5.6 returns
(-20500513.477395,-3641436.715144)
The World Coordinate Converter automatically transform the output CRS to
UTM 60S, so I can't not validate the transformation with it.
The issue is that I would like to understand the expected behaviour from
this function, so that I can go on checking it and defining the best way to
support the functionality or detecting a problem in servers configuration.
The code is as follows:
function project($x, $y, $srsIn, $srsOut)
{
$pointObj=ms_newPointObj();
$pointObj-setXY($x,$y);
$pointObj-project(ms_newProjectionObj(init=.strtolower($srsIn)),
ms_newProjectionObj(init=.strtolower($srsOut)));
$xout=$pointObj-x;
$yout=$pointObj-y;
$pointObj-free();
return $xout.,.$yout;
}
?
2012/4/16 Lime, Steve D (DNR) steve.l...@state.mn.us
The transformation is done in place, I’ve not had problems with it. What
language? Can you post a code snippet?
** **
*From:* mapserver-users-boun...@lists.osgeo.org [mailto:
mapserver-users-boun...@lists.osgeo.org] *On Behalf Of *Juanma M. R.
*Sent:* Thursday, April 12, 2012 4:13 AM
*To:* mapserver-users@lists.osgeo.org
*Subject:* [mapserver-users] pointObj-project behaviour differences from
4.10 to 5.6 versions
** **
Dear list,
I have a webgis application working with different CRS all over the world.
I have realized that the behaviour from version 4.10 of the function
pointObj-project differs from the one of version 5.6 from Mapserver. For
example, I try to convert (-116,-15) in 4326 and in mapscript from version
4.10 it returns (-26158630.407638,-25040425.679281) when passing to 32630.
On the other hand, in version 5.6 of mapscript it returns the original
coordinates without transforming them.
Is this intended or am I doing something wrong? Which is the intended
behaviour of project function in MapServer 5.6?
Best regards,
--
Juan Manuel Moreno Rivera.
University of Castilla-La Mancha
Albacete, Spain
--
Juan Manuel Moreno Rivera.
University of Castilla-La Mancha
Albacete, Spain
___
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mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] pointObj-project behaviour differences from 4.10 to 5.6 versions
EPSG:32630 is UTM Zone 30N ...
http://spatialreference.org/ref/epsg/32630/
A UTM coordinate system is defined for a limited area, a UTM zone has a
width of 6 degrees of longitude, in this case
EPSG:32630
WGS 84 / UTM zone 30N
WGS84 Bounds: -6., 0., 0., 84.
It is very likely that you are getting random values from various PROJ
versions because your -116, -15 test coordinate is outside of the area
of validity of the EPSG:32630 coordinate system.
Daniel
On 12-04-23 9:39 AM, Juanma M. R. wrote:
Hi,
I have been doing more tests to try to identify exactly the problem and
I ahve realized that, according to http://twcc.free.fr/, the coordinates
returned when working with php_mapscript from version 4.10 are not
correct. I am trying to get where is the problem, so that I can decide
wether sorting out a The issue is that the function project returns
different things depending on the server configuration:
Input coordinates in Google Spherical Mercator:
(-20500513.477395,-3641436.
715144)
Server 1: proj 4.1.5 and MapServer 4.10 returns
(-90270074.105905,-216622133.8792)
Server 2: proj 4.1.7 and MapServer 5.6 returns
(-20500513.477395,-3641436.715144)
The World Coordinate Converter automatically transform the output CRS to
UTM 60S, so I can't not validate the transformation with it.
The issue is that I would like to understand the expected behaviour from
this function, so that I can go on checking it and defining the best way
to support the functionality or detecting a problem in servers
configuration.
The code is as follows:
function project($x, $y, $srsIn, $srsOut)
{
$pointObj=ms_newPointObj();
$pointObj-setXY($x,$y);
$pointObj-project(ms_newProjectionObj(init=.strtolower($srsIn)),
ms_newProjectionObj(init=.strtolower($srsOut)));
$xout=$pointObj-x;
$yout=$pointObj-y;
$pointObj-free();
return $xout.,.$yout;
}
?
2012/4/16 Lime, Steve D (DNR) steve.l...@state.mn.us
mailto:steve.l...@state.mn.us
The transformation is done in place, I’ve not had problems with it.
What language? Can you post a code snippet?
__ __
*From:*mapserver-users-boun...@lists.osgeo.org
mailto:mapserver-users-boun...@lists.osgeo.org
[mailto:mapserver-users-boun...@lists.osgeo.org
mailto:mapserver-users-boun...@lists.osgeo.org] *On Behalf Of
*Juanma M. R.
*Sent:* Thursday, April 12, 2012 4:13 AM
*To:* mapserver-users@lists.osgeo.org
mailto:mapserver-users@lists.osgeo.org
*Subject:* [mapserver-users] pointObj-project behaviour differences
from 4.10 to 5.6 versions
__ __
Dear list,
I have a webgis application working with different CRS all over the
world. I have realized that the behaviour from version 4.10 of the
function pointObj-project differs from the one of version 5.6 from
Mapserver. For example, I try to convert (-116,-15) in 4326 and in
mapscript from version 4.10 it returns
(-26158630.407638,-25040425.679281) when passing to 32630. On the
other hand, in version 5.6 of mapscript it returns the original
coordinates without transforming them.
Is this intended or am I doing something wrong? Which is the
intended behaviour of project function in MapServer 5.6?
Best regards,
--
Juan Manuel Moreno Rivera.
University of Castilla-La Mancha
Albacete, Spain
--
Juan Manuel Moreno Rivera.
University of Castilla-La Mancha
Albacete, Spain
___
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
--
Daniel Morissette
http://www.mapgears.com/
Provider of Professional MapServer Support since 2000
___
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
RE: [mapserver-users] pointObj-project behaviour differences from 4.10 to 5.6 versions
The transformation is done in place, I've not had problems with it. What language? Can you post a code snippet? From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Juanma M. R. Sent: Thursday, April 12, 2012 4:13 AM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] pointObj-project behaviour differences from 4.10 to 5.6 versions Dear list, I have a webgis application working with different CRS all over the world. I have realized that the behaviour from version 4.10 of the function pointObj-project differs from the one of version 5.6 from Mapserver. For example, I try to convert (-116,-15) in 4326 and in mapscript from version 4.10 it returns (-26158630.407638,-25040425.679281) when passing to 32630. On the other hand, in version 5.6 of mapscript it returns the original coordinates without transforming them. Is this intended or am I doing something wrong? Which is the intended behaviour of project function in MapServer 5.6? Best regards, -- Juan Manuel Moreno Rivera. University of Castilla-La Mancha Albacete, Spain ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] pointObj-project behaviour differences from 4.10 to 5.6 versions
Dear list, I have a webgis application working with different CRS all over the world. I have realized that the behaviour from version 4.10 of the function pointObj-project differs from the one of version 5.6 from Mapserver. For example, I try to convert (-116,-15) in 4326 and in mapscript from version 4.10 it returns (-26158630.407638,-25040425.679281) when passing to 32630. On the other hand, in version 5.6 of mapscript it returns the original coordinates without transforming them. Is this intended or am I doing something wrong? Which is the intended behaviour of project function in MapServer 5.6? Best regards, -- Juan Manuel Moreno Rivera. University of Castilla-La Mancha Albacete, Spain ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
