[Therion] Sketches on doesn't work / legacy survey

[Benedikt Hallinger]

What Tarquin said:
You can use "symbol-hide group cave-centerline" to hide all centerline 
relevant symbols.

Am 2020-04-15 20:19, schrieb Tarquin Wilton-Jones via Therion:
>> symbol-hide line centerline does *not *work (unknown symbol
> 
> centreline is not a valid line type, so you cannot use the keyword
> "line" with it. (That is to say, it's not a type of line that you can
> select from the dropdown when you are creating a line in XTherion.)
> 
> The line is called "survey" (with subtypes survey:cave and
> survey:surface that you can select in XTherion), and Therion
> automatically generates lines of that type when you ask it to render a
> PDF. It also draws stations (subtypes painted, fixed, temporary,
> natural). These are all grouped together as "cave-centreline" when
> inside a cave (flags not surface) and surface-centreline (flags
> surface), and those two groups are grouped into "centreline".
> 
> group centreline
> |-group cave-centerline
> | |-line survey
> | | `-line survey:cave
> | `-point station
> |   |-point station:fixed
> |   |-point station:natural
> |   |-point station:painted
> |   `-point station:temporary
> `-group surface-centerline
>   |-line survey
>   | `-line survey:surface
>   `-point station
>     |-point station:fixed
>     |-point station:natural
>     |-point station:painted
>     `-point station:temporary
> 
> And yes, that does mean that you cannot selectively hide just the
> stations that are on the surface. But you can hide the parent group, 
> and
> then unhide the other things you want to appear...
> 
> symbol-hide group surface-centerline
> symbol-show line survey:surface
> 
> I have not tested if this would actually work, but I think it should.
> Have fun, and see what happens.
> 
> Hope this makes sense.
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