[Therion] station-names []@survey not implemented for point station -from option

[Bruce Mutton]

Kia ora

Maybe I found a minor bug.

 

I have an extended elevation that includes a loop (many actually) and of
course there is a gap in the loop as rendered that I would like to
illustrate with a map-connection line.  Where the yellow shading is in the
image below, I would like to draw a horizontal map-connection line.

So following the guidance in the Therion Book pages 105 and 106 I have
created a scrap.

 

scrap 2-HawkesElevEXT-s1connection -projection extended -station-names []@2

  point 0 0   station -name 2.4 -from 2.5

  point 100 0 station -name 2.4 -from 2.3

  

  line map-connection

    0   0

   100 0

  endline

endscrap

 

On creating the scrap and before referencing it in any maps, Therion is
unhappy and exits with the following:

 

#################### end of cavern log file ####################

done

calculating basic statistics ... done

processing extended elevation ... done

processing references ... 

C:\Program Files\Therion\therion.exe: error -- string pointer is null

writing xtherion file ... done

 

Am using therion 6.2.0+fd5c1b6 (2024-01-10)

 

On experimenting a little, I realised that -station-names has no effect on
the -from station parameter.

So this was my workaround.

scrap 2-HawkesElevEXT-s1connection -projection extended -station-names []@2

  point 0 0   station -name 2.4 -from 2.5 at 2

  point 100 0 station -name 2.4 -from 2.3 at 2

  

  line map-connection

    0   0

    100 0

  endline

endscrap

 



I'll create an issue in GitHub.

 

Bruce

 

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