Thanks Thomas
Unfortunately I don’t know how to install or run from a commit or pull request that does not seem to have an installer.
I found my way here, but nothing there looks like a Therion install I can run.
Fix crash with circular map reference · therion/therion@54c4a9a
If you have any tips that would be great – I’ll be unavailable for about four days, so no immediate rush.
Thanks
Bruce
-----Original Message-----
From: Therion <therion-bounces@speleo.sk> On Behalf Of Thomas Holder
Sent: Thursday, 23 April 2026 10:21
To: List for Therion users <therion@speleo.sk>
Subject: Re: [Therion] map survey option now causes (fatal) error
Hi Bruce,
Can you try the branch from this pull request?
https://github.com/therion/therion/pull/746
Best,
Thomas
> On Apr 18, 2026, at 22:59, bruce@tomo.co.nz wrote:
>
> For a few maps in a few surveys I have been using the -survey option to constrain map statistics to match the underlying survey (page 34-35 of Therion Book).
> I think some recent version of Therion has broken this.
> The start of my map definition…
> map MiddleEarthElev290Map \
> -title "Middle Earth and<br>Lower Greenlink Caves<br>Elevation looking 290 deg" \
> -projection [elevation 290 deg] \
> -survey MiddleEarth # survey option forces map statistics to match
> the survey The error reported… via Mapiah… C:\Program
> Files\Therion\therion.exe: error -- Press ENTER to
> exit!./GreenlinkArea/./middleearthcave/INDEXMiddleEarthElev290.th
> [579] -- invalid survey reference – MiddleEarth via XTherion
> C:\Program Files\Therion\therion.exe: error --
> ./GreenlinkArea/./middleearthcave/INDEXMiddleEarthElev290.th[579] -- invalid survey reference -- MiddleEarth writing xtherion file ... done I am using… therion 6.3.4+d9c313ac (2026-03-29)
> - using Proj 9.8.0, compiled against 9.8.0 Anyone else noticed
> this?
> Thanks
> Bruce
> _______________________________________________
> Therion mailing list
> https://mailman.speleo.sk/listinfo/therion
_______________________________________________
Therion mailing list