[Therion] colour graduation lookup feature - date and select

[Bruce Mutton]

Stacho, and Therion users

Tried to break lookups for dates, maps and scraps today, with only a small
amount of success!  Actually, it seems a pretty  stable and useful feature.

 

I have documented how I think they work in the wiki 

https://therion.speleo.sk/wiki/examples#colour_scales_-_lookups

 

1.	I have a question about using

- [0 0 0] "undated surveys"

in a lookup list.  As I noted in the wiki, the dash '-' seems to select all
undated surveys if placed at the bottom of the list, and all surveys if
placed at the top of the list.  This would seem to suggest the legend
colours are constructed the same as scrap drawings; items at the top of the
list overwrite those below them, if there is any clash.  It seems to be a
useful and predictable behaviour, if that is actually the case - have I got
it right?

 

2.	Specifying colour with map selection.

I could not get this to work at all, although have only tried it with one
project so far.  I have tried both spellings;

select map1 -color [100 0 0]

select map1 -colour [100 0 0]

Both are silently ignored.  I have checked to make sure there are no colour
map-fig statements hidden in the project, as I assume these might override
the map selection (although having 'select map colour' override 'colour
map-fg xxxx' would be a nice behaviour).

What might I be doing wrong here?

 

3.	And lastly a minor comment.

The default date colour legend looks like this.



. with the most recent dates at the bottom.  As with altitudes (which has
already being adjusted) my preference would be to have the recent dates sort
to the top (the colours - red for recent is good).  I could make custom
lookups of course, but I think the default should match what most people
prefer.

What do people think?

 

Regards

Bruce

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