[Therion] Odd behavior exporting map using LRUD's

[Niklas Konstenius]

Hi,
I have survey data with LRUD's for the from-station as follows:

-----
centerline
data normal from  to  length  compass  clino left right up down
a  b  10 90 0 2 0 2 0
b  c  10 90 0 0 2 2 0
c  d  10 90 0 2 0 2 0
endcenterline
-----
Since LRUD is measured at from-station this data indicates that station a
and c is positiond at the right cave wall and station b is positioned at the
left wall (station d is undefined).

In the generated map however the cave walls is drawn so that station b is
positioned at the right wall and station c is positioned at the left wall
(see attached pdf). It seems that the LRUD's are applied to the to-station
instead of from-station (except for station a). Is it possible to change
this behavior?

I'm using the following thconfig file to export a map with walls generated
by the LRUD values:
-----
source data.th

layout my_layout
colour map-fg [100 0 0]
colour map-bg [100 100 100]
debug all
endlayout

export map -projection plan -o map.pdf -layout my_layout
-----

/niklas
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