Stephane Lessard wrote:
Sorry about the double-post... I forgot to change the subject...
Hello List,
I'm trying to display the S57 Soundings values on my map. Here's the output
of ogrinfo on the SOUNDG layer of my S57 chart (the relevant part, for 1
feature):
OGRFeature(SOUNDG):140
RCID (Integer) = 141
...
MULTIPOINT (-72.373733104642483 46.402858362124853 9.5)
I can display a SYMBOL at the appropriate coordinate, but what I need is the
actual Z value... (9.5) Anyone can help me accomplish this? What should I
put as a LABELITEM? Here is my layer definition:
Stephane,
Normally this would not be possible. But it happens that others have had
a similar wish with the S57 driver before, and so there are some special
hacks (aka runtime options) that make this possible.
You can set the OGR_S57_OPTIONS variable to include
SPLIT_MULTIPOINT=ON,ADD_SOUNDG_DEPTH=ON and then the multipoints
will be split up with one feature per sounding, and a new DEPTH attribute
with the depth value.
eg.
ogrinfo --config OGR_S57_OPTIONS SPLIT_MULTIPOINT=ON,ADD_SOUNDG_DEPTH=ON -ro
GB4X0000.000 SOUNDG
In the mapfile, this can be accomplished with the CONFIG keyword at
the map level.
eg.
CONFIG "OGR_S57_OPTIONS" "SPLIT_MULTIPOINT=ON,ADD_SOUNDG_DEPTH=ON"
Best regards,
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