FME, which sources from GEOS
(https://cdn.safe.com/resources/fme/FMEDesktop_Legal_Notices_2019.0.pdf),
did not handle the measurement with its Clipper transformer until about
two years ago. Wonder if they achieved this through direct update the
GEOS lib or through post-GEOS enhancement.
On 5/6/19 2:53 PM, Martin Davis wrote:
Not exactly the same thing - I believe that ticket is referring to
just the WKB format handling?
I can make a ticket for measure handling by the overlay operations if
there isn't one already.
On Mon, May 6, 2019 at 11:31 AM Darafei "Komяpa" Praliaskouski
<[email protected] <mailto:[email protected]>> wrote:
It's in backlog for 6 years already I believe:
https://trac.osgeo.org/geos/ticket/466
пн, 6 мая 2019, 19:33 карыстальнік Martin Davis
<[email protected] <mailto:[email protected]>> напісаў:
It should be possible to post-process GEOS results to
re-populate the M values if present. Linear interpolation
could be used to estimate values at intra-segment points. We
can put this on the list for future development.
On Mon, May 6, 2019 at 4:48 AM Darafei "Komяpa" Praliaskouski
<[email protected] <mailto:[email protected]>> wrote:
Hi,
GEOS operations do not preserve M, but sometimes preserve
Z. You can try
ST_SwapOrdinates(ST_Intersection(ST_SwapOrdinates(geom,
'zm'),...), 'zm').
On Thu, May 2, 2019 at 5:19 AM Bo Guo
<[email protected] <mailto:[email protected]>> wrote:
Hi there,
I was trying to cut a portion of the LRS route with an
area using
ST_Intersection. However the resulting route no
longer carries measure
value. The behavior is the same for version 9.6 or
the latest version
11. Anyone has any suggestions?
Thanks!
Bo
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Gistic Research, Inc.
2033 E Warner Rd. Ste 105
Tempe, AZ 85284
www.gisticinc.com
Tel: 480-656-9962
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