Thanks for swift answering. My question considered only the Therion files. However, the problem originates when importing from PT txt-files, when one has to choose both scale, resolution and grid. Therion then calculates a combined ratio which is stored in the second last line in the xvi file. But if someone tampers with the figures in the xvi file, is it then possible to recalculate it from the information found in the heading in the th2 file? (I know it can be done by calculating East and North distance between two stations in the centreline file, and then dividing the corresponding th2 figures by that.) Torstein Den 09.06.2018 08.52, skrev Martin Sluka via Therion:

Scale is done by size of square mesh.

There is not a scale in PocketTopo, one may change it.

Martin S.

Odesláno z iPhonu

9. 6. 2018 v 8:20, torstein finnesand via Therion <therion@speleo.sk>:

...

Hi,

After importing a txt-file from PocketTopo into Therion; is it possible to detect the original Scale/Resolution–factor from the head of the th2-file, or is the xvi-file the only place where this is stored?

Torstein _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion

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