Stacho Thanks for looking at this. I tried on 5.3.15 and 5.3.16 and the effect is similar. Note the shape of the survey legs differs between outputs - if the date specified is beyond the geomag data, the angle between the survey legs is wrong. I think the problem is characterized by specifying a date that extends beyond the geomagnetic data range contained within Therion. In this case the error reported should not be "unable to determine magnetic declination for undated surveys" but rather indicate that a survey date extends beyond the geomagnetic database in this version of Therion. Have attached the thconfig file I used, and some outputs identified by the survey date and Therion version used to create them. Of the outputs, only the file cave2015-5.3.16.pdf has survey dates within the range of the version of Therion used to compile it. It is also the only output with the correct survey shape and valid /magdecl value. Bruce _____ From: therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] On Behalf Of Stacho Mudrak Sent: Thursday, 22 January 2015 4:45 a.m. To: List for Therion users Subject: Re: [Therion] Magnetic declination meltdown 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@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@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 _______________________________________________ Therion mailing list Therion@speleo.sk http://mailman.speleo.sk/mailman/listinfo/therion
