[Therion] Altitude metapost error -2

[Martin Budaj]

Hi,

this should be fixed in the latest commit (windows installer here:
https://github.com/therion/therion/actions/runs/25989238617).

Best wishes
Martin


On Sun, May 17, 2026 at 11:03 AM <bruce at tomo.co.nz> wrote:

> Strange and interesting.
>
> I can replicate this with Therion 6.4.0
>
> How did you deduce that 0.1 degree inclination change should bypass the
> problem?
>
> Bruce
>
>
>
> *From:* Therion <therion-bounces at speleo.sk> *On Behalf Of *Sau --- via
> Therion
> *Sent:* Saturday, 16 May 2026 04:39
> *To:* therion at speleo.sk
> *Cc:* Sau --- <ua9lif at mail.ru>
> *Subject:* [Therion] Altitude metapost error -2
>
>
>
> Hello
>
> I have error, when using command «color map-fg altitude».
>
> If i had commented survey in Berloga.th  —  « v78 v79 4.61 172.9 -41.7» or
> changed vert angle to -41.8, then all compiling ok.
>
>
>
> Log of error:
>
>
>
> >> d
>
> ! Unknown relation will be considered false.
>
> <to be read again>
>
>                    :
>
> log->begingroup(if(EXPR2)=0:
>
>                             0else:mlog((EXPR2))/mlog(10)fi)endgroup
>
> <to be read again>
>
>                    ;
>
> s_altitudebar->...d:=(EXPR1)-(EXPR0);dlog:=log(d);
>
>
> if.dlog.mod1<0.301:dv:=2;e...
>
> l.7428 ...1,(0.00750,0.75000,0.00000,0.00000))("")
>
>                                                   ;
>
> Oh dear. I can't decide if the expression above is positive,
>
> negative, or zero. So this comparison test won't be `true'.
>
>
>
>
>
> --
> Sau ---
> Отправлено из Почты Mail <https://trk.mail.ru/c/zzm979>
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