[Therion] Magnetic declination meltdown

[Stacho Mudrak]

Hi Bruce,

I have tried to reproduce your error but without success.

Attached thconfig file gives me "unable to determine magnetic declination
for undated surveys" warning, but \magdecl is correctly defined
(\magdecl={4.67})

Are to able to send me some dataset, where this error occurs? Or does it
happen in previous version of therion?

S.

source
centerline
cs lat-long
data normal from to compass clino tape
0 1 90 0 10
fix 0 48.14 19.99 230
date 2012.01.09
endcenterline
centerline
data normal from to compass clino tape
1 2 100 0 10
endcenterline
endsource

export map


On 19 January 2015 at 09:57, Bruce <bruce at tomo.co.nz> wrote:

>    It seems I was wrong about the cause of the problem, the problem is
> more in Therion than in data entry.
>
> Looks like Therion 5.3.15 cannot handle survey dates in 2015 (as implied
> in the changes logs), and so 5.3.16 is required to use coordinate systems
> with surveys dated from 2015 onwards.
>
> That is OK, but what could be improved, is the reporting of the error to
> something like…
>
>
>
> *magnetic declination not available for survey date*
>
>
>
> and also to improve the variable    \magdecl in this circumstance.
>
>
>
> Bruce
>  ------------------------------
>
> *From:* Bruce [mailto:bruce at tomo.co.nz]
> *Sent:* Monday, 19 January 2015 4:34 p.m.
> *To:* 'List for Therion users'
> *Subject:* Magnetic declination meltdown
>
>
>
> A random discovery with the new tex variable    \magdecl = magnetic
> declination in degrees.
>
>
>
> If one uses a defined coordinate system and forgets to provide a survey
> date for all surveys, then there is some ‘not very well trapped’
> undesirable behaviour.
>
>
>
>
>
> The log file produces something like this…
>
>
>
>  “C:\Program Files\Therion\therion.exe: warning -- *unable to determine
> magnetic declination for undated surveys*
>
> output coordinate system: EPSG:2193
>
> meridian convergence (deg): -0.0696
>
> “
>
> which is appropriate behaviour, however it is followed by…
>
>
>
> “
>
> #################### end of metapost log file ####################
>
> converting scraps ... done
>
> making map ... done
>
> ######################## pdftex log file #########################
>
> This is pdfTeX, Version 3.1415926-1.40.10 (Web2C 2009) (format=pdftex
> 2010.1.2)  18 JAN 2015 20:21
>
> entering extended mode
>
> **data.tex
>
> (./data.tex (./th_enc.tex) (./th_texts.tex) (./th_resources.tex
>
> (c:/Program Files/Therion/texmf/tex/glyphtounicode.tex))
> (./th_fontdef.tex{c:/P
>
> rogram Files/Therion/texmf/fonts/pdftex.map})
>
> (./th_formdef.tex
>
> Normal \count register pool exhausted, switching to extended pool.)
>
> (./th_pagedef.tex
>
> Overfull \hbox (299.59392pt too wide) in paragraph at lines 12--12
>
> []\thfb gridnorth
> -1261120821493519700000000000000000000000000000000000000000
>
> 00000000000000000000000000000000.00deg |
>
>
>
> \hbox(8.33333+2.33333)x330.05206, glue set - 1.0
>
> .\hbox(0.0+0.0)x0.0
>
> .\thfb g
>
> .\thfb r
>
> .\thfb i
>
> .\thfb d
>
> .etc.
>
>
>
> ) (./th_pages.tex)
>
>  253 numeric registers used out of 32768
>
>  [1] )
>
> Here is how much of TeX's memory you used:
>
>  1706 strings out of 95617
>
> ….
>
> “
>
>
>
> which is not so good, but at least it does produce a generally OK looking
> pdf (with my experimental debug like header layout).
>
>
>
>
>
> In this case it might be better to set \magdecl to a more meaningful
> error value.
>
> If it can take a string value then “*unable to determine magnetic
> declination for undated surveys*” is probably good.
>
>
>
> Bruce
>
> _______________________________________________
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> Therion at speleo.sk
> http://mailman.speleo.sk/mailman/listinfo/therion
>
>
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