[Therion] Selective display of survey lines
sbc23 at cantab.net
Tue May 20 23:16:37 CEST 2014
On a related note to Alvaro's questions regarding show and hide of
survey lines, I'm looking for some advice on the best way to handle the
selective displaying of some survey lines, but not others.
We have a project surveying a mainly submerged (diving) cave. The vast
majority of our survey stations and connecting lines are an actual
continuous physical line in the cave (say 300 stations). Some stations
(maybe 50) do not have physical lines connecting them (e.g. gaps/jumps
in the line and dry disto survey).
We would like to be able to :
1. Produce a map with with no lines at all (seems easy, use 'symbol-hide
line survey' & 'symbol-hide point station' )
2. Produce a map with only the physical lines shown, but not the other
survey lines. This is as a resource for divers to show the line
configuration and navigation etc. but not the other survey information.
What is the best way to achieve 2? I've considered making a user-defined
line type 'u:caveline' and drawing it in all the scraps where submerged
line exists. Then hide all survey lines and stations. This would be
laborious but may give most flexibility.
Is this the best way or can anyone suggest an alternative approach?
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