I have Inkscape but have never used it for cave cartography. I do not have the Therion plugin for it. The regular xTherion interface is familiar and generally suitable, so I have never felt the need to go through another learning curve. =============== Bill Gee On 4/4/26 00:54, Axel via Therion wrote:
Moin, scaling (multiple) backgrounds are no problem if u use Inkscape with the Therion plugin (one of the reasons I startet using it) I know it has other issues and misses some features u use, but it might be a solution here...
Axel *Gesendet: *Freitag, 3. April 2026 um 19:45 *Von: *"Bill Gee" <bgee@campercaver.net> *An: *"Therion Mail List" <therion@speleo.sk> *Betreff: *[Therion] Resizing or scaling a replacement background image Hello everyone -
I am not sure how this should be handled, or if it even CAN be handled ...
A few weeks ago we went to a section of a cave where the original sketch has some problems. Rather than resketch the entire section, we took the original sketch and made corrections directly on it.
Now I want to update the Therion map. Six months ago I used the original sketch as the background of a .th2 file, then drew as much as I could figure out. Since the update is on the same piece of paper, I figured I could just replace the original drawing background with a scanned image of the updated sketch. It did not work.
The new scanned background comes in about 1/5 as big as it needs to be. The original elements I drew do not match up, so I cannot draw the new stuff on it.
I think the reason is that the original background and the new background were scanned at different resolutions. I did not scan them. The old background image is 2550x3300 pixels and the new is 908x1200 pixels.
What do you suggest? Is there a way to stretch the new background so it fits under the existing drawing?
It might be easiest to ask for a rescan. The new scan might still not line up. Is there a way to shift the background? I think there is. I have managed to do it a few times by accident. No idea what keys I hit when that happens. I have to close the .th2 without saving, then open and start again.
-- =============== Bill Gee
_______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion <https://mailman.speleo.sk/ listinfo/therion>
_______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion