[Therion] Best approach for colouring elevations

[Tarquin Wilton-Jones]

>> segment1 at cave1 [100 40 40]
>>  segmenta at cave2 [100 40 40]
>>  segmenti at cave3 [100 40 40]
>>
>>  segment2 at cave1 [100 70 0]
>>  segment4 at cave1 [100 70 0]
>>  segmentii at cave3 [100 70 0]
>>
>>  segment3 at cave1 [100 100 0]
>>  segmentb at cave2 [100 100 0]
>>  segmentiii at cave3
> 
> And what is the problem define another maps from segments and colour them?


In the simple case I showed above, there would be no problem. But in my
actual case, I am doing this:

select profilemap1 at area
...
lookup map:xyz
#map within survey, grouping scraps that are in the same plane:
scrapGroupingMap1 at survey.cave.area
#whole survey, since the whole cave is in the same plane:
wholecave at cave.area
endlookup

I have already split the surveys up into separate maps to show each
aligned group.

Having to split my overall map up into yet another series of submaps,
each of which covers an arbitrary group of maps from several unrelated
subsections, is getting really close to spaghetti code. Meanwhile
grouping within the lookup would be comparatively clean and easier to
understand.