[MapServer-users] GetFeatureInfo from VRT COG stack

[Scott]

If you do a gdallocationinfo on your .vrt using lon/lat, does it give 
all values or just one?

If you only get one value, you may need specify that they are individual 
COGs. Using gdalbuildvrt that may look like:

gdalbuildvrt -separate mycogs.vrt /path/to/cogs/*.tif

I'm not sure how that will translate to getFeatureInfo, but it ensures 
your .vrt is correctly made.

On 4/22/25 08:03, Eloi Ribeiro via MapServer-users wrote:
> Dear all,
> 
> I have a stack of COG files that fully overlap, with the same extent, 
> EPSG and size.
> I have created a VRT <https://cloud.eloiribeiro.eu/s/WtKgesFJCHnYSCQ>, 
> mapfile <https://cloud.eloiribeiro.eu/s/sCoqeWaLq6eSKqA> and 
> getfeatureinfo template <https://cloud.eloiribeiro.eu/s/35Z2e8nkifnoC6w>.
> The goal is to get the pixel value from all layers (COG files) in the 
> VRT in one go with a GetFeatureInfo request. Is this even possible? For 
> now I only get the value of the first layer. The response looks like this: /
> Layer: PH-GSOC Coords: 120.85598, 15.638156 Value: 37.550686/.
> 
> What I need to do in order to get the values from all layers, instead of 
> only the first one?
> 
> Kind regards,
> 
> Eloi
> 
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