A working Example
Let's assume there is a point layer with three point features in it, see image below
Proceed with: RMC > Properties > Symbology > Symbol layer type: SVG Marker.
Then go to the Dynamic SVG parameters > Edit... , where paste the following expression:
CASE
WHEN "id" = 1 THEN 'C://TempDaten//socicon_amazon.svg'
WHEN "id" = 2 THEN 'C://TempDaten//socicon_google+.svg'
ELSE 'C://TempDaten//socicon_apple.svg'
END
and get the following result:
Above I am working with a folder C://TempDaten where all my SVG markers are stored.
A HOW TO chapter
Here I tried to sum up some basics regarding the referencing to a SVG file. (Mind that it could vary depending on the OS)
| Approach | Working ? |
|---|---|
/ (single slash) |
✅ yes |
// (double slash) |
✅ yes |
\ (single backslash) |
❌ no |
\\ (double backslash) |
✅ yes |
@project_folder || '/yourfile.svg' |
✅ yes |
@project_folder || '//yourfile.svg' |
✅ yes |
@project_folder || '\\yourfile.svg' |
✅ yes |
I am on Windows 10 with QGIS 3.18.1-Zürich.
References: