Issue with SOLWEIG in UMEP – ZIP SVF File Required but Not Working

[Guillaume979]

Hello everyone,

I am currently trying to calculate Mean Radiant Temperature (TMRT) using SOLWEIG in the UMEP plugin for QGIS (version 3.36.3 - Maidenhead, UMEP 4.1.1). However, I am facing an issue where SOLWEIG requires a ZIP file containing Sky View Factor (SVF) rasters, but it does not seem to work correctly.

Here’s what I have done so far:

Generated SVF rasters using UMEP's Pre-Processor → Sky View Factor Calculator
The process successfully creates svf.tif, svfE.tif, svfS.tif, svfW.tif, and svfN.tif.
These files open correctly in QGIS and appear valid.
The ZIP contains all SVF rasters.
However, SOLWEIG still shows the error: "SVF import error: The zipfile including the SVFs seems corrupt. Retry calculating the SVFs in the Pre-Processor or choose another file."

My questions:
Is there a way to run SOLWEIG without needing a ZIP file for SVFs?
What are the correct file structure and naming conventions for the ZIP to ensure SOLWEIG reads it properly?
Has anyone encountered a similar issue with QGIS 3.36.3 and UMEP 4.1.1? Would downgrading QGIS or UMEP help?

Any advice or insights would be greatly appreciated! Thanks in advance for your help.

Best,
Guillauume

[biglimp]

Hm, I have not seen this type of error before. What OS are you using?
I will close your other issue (#99 in processing) so we have all correspondence in one place.