[MapServer-users] Inconsistent support for template substitution

[Andrew Harfoot]

I should have added that the behaviour is the same if the template file 
is configured as an OUTPUTFORMAT.

On 19/10/2023 14:50, Andrew Harfoot via MapServer-users wrote:
> *CAUTION:* This e-mail originated outside the University of Southampton.
>
> 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:ajph at soton.ac.uk
> Phone: +44 2380 590566
>
> GeoData Institute
> University of Southampton
> Southampton
> SO17 1BJ
>
> www.geodata.soton.ac.uk
>
> _______________________________________________
> MapServer-users mailing list
> MapServer-users at lists.osgeo.org
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-- 
Andy Harfoot

Skype: gdi_ajph
Teams:ajph at soton.ac.uk
Phone: +44 2380 590566

GeoData Institute
University of Southampton
Southampton
SO17 1BJ

www.geodata.soton.ac.uk
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