Hi Seth,
Thanks for checking that, I see what you mean. I'll submit a pull
request to correct the logic.
Cheers,
Andy
On 19/10/2023 16:26, Seth G wrote:
*CAUTION:* This e-mail originated outside the University of Southampton.
Hi,
This seems like a bug - there is a check to see if the Map projection
is a geographic coordinate system [1], and if it is then it skips all
the [maplon], [maplat], [minlon] etc. substitutions. If it is in
another projection then the point and extent are reprojected to latlon
and included in the template.
Seth
[1]
https://github.com/MapServer/MapServer/blob/main/src/maptemplate.c#L4273
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On Thu, Oct 19, 2023, at 3:50 PM, Andrew Harfoot via MapServer-users
wrote:
Hi list,
I am setting up a WMS server using Mapserver 7.6.2 and want to return
a html response to a GetFeatureInfo request where the response
contains the coordinates of the GFI click. The WMS supports multiple
coordinate systems, so ideally I'd like to have the coordinates in a
CRS that I can predetermine.
I have a test template file as follows:
<!-- MapServer Template -->
<p>
Map X/Y : [mapx],[mapy]<br>
Map LL : [maplon],[maplat]
</p>
If I configure an 'old style' TEMPLATE in the map file, directly
referencing the html template as follows:
LAYER
TEMPLATE "coord_comp.html"
With a GFI request specifying a CRS of EPSG:27700:
...&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo
&BBOX=379766.9556955648586154,58602.32640402266406454,405538.15569556411355734,94300.79913129436317831
&CRS=EPSG:27700&WIDTH=649&HEIGHT=899&LAYERS=test&STYLES=&FORMAT=image/jpeg&QUERY_LAYERS=test
&INFO_FORMAT=text/html&I=268&J=647&FEATURE_COUNT=50
the output of is as follows:
Map X/Y : 390428.846605,68589.162768
Map LL : 50.516415,-2.135015
When a similar requests are made specifying a CRS of EPSG:4326:
...&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo
&BBOX=50.33460688675980776,-2.28814701603231718,50.84060858090575863,-1.92285769511938809
&CRS=EPSG:4326&WIDTH=649&HEIGHT=899&LAYERS=test&STYLES=&FORMAT=image/jpeg&QUERY_LAYERS=test
&INFO_FORMAT=text/html&I=298&J=579&FEATURE_COUNT=50
the output is as follows:
Map X/Y : 50.514437,-2.120136
Map LL : [maplon],[maplat]
The maplat and maplon templates are not substituted.
Mapserver has been compiled with PROJ support and a PROJECTION has
been defined for the layer in the map file.
The CRS of the source data is EPSG:27700
I was hoping that the maplat and maplon templates would provide me
with a consistent source of coordinate information, independent of
the request CRS. Can anybody shed any light on the observed behaviour?
Thanks,
Andy
--
Andy Harfoot
Skype: gdi_ajph
Teams:a...@soton.ac.uk <mailto:a...@soton.ac.uk>
Phone: +44 2380 590566
GeoData Institute
University of Southampton
Southampton
SO17 1BJ
www.geodata.soton.ac.uk <http://www.geodata.soton.ac.uk>
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--
Andy Harfoot
Skype: gdi_ajph
Teams:a...@soton.ac.uk
Phone: +44 2380 590566
GeoData Institute
University of Southampton
Southampton
SO17 1BJ
www.geodata.soton.ac.uk
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