Argh! I started this thread saying I probably was doing something stupid
or missing something obvious and I was right!
Seth, Thank you for your support and suggestions, they lead me to the
problem which was the fact that somewhere along the line some filenames
changed and CONFIG ON_MISSING_DATA "IGNORE" masked that problem.
So things are working as expected after fixing file names and few other
minor computational issues.
Thank you all for this wonderful software suite!
-Steve W
On 5/30/2025 3:37 AM, Seth G wrote:
HI Steve,
Yes, it is the MapServer logs that might have something useful. You
can also increase the LAYER logging and add in GDAL logging by adding
the following to the Mapfile:
CONFIG "CPL_DEBUG" "ON"
CONFIG "PROJ_DEBUG" "ON"
DEBUG 5
LAYER
DEBUG 5
I wouldn't worry too much about the querying until you can see output
in the map. I'd probably try a few things to narrow it down:
- does the LAYER work if you switch the data to the ssh layer?
- does the LAYER work if you use the image directly without the .vrt?
- maybe get the EXTENT from QGIS or GDAL in EPSG:4326 and add the
EXTENT to the layer.
In my experience, blank layers are usually related to extent or
projection, but it could be something else.
Seth
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