[gdal-dev] missing point in MultiGeometry KML file

[Even Rouault]

Greg,

Your KML file is invalid. The format for <coordinates> content must be 
"X1,Y1,Z1 X2,Y2,Z2...". Here the space between triplets is replaced with a 
comma, which confuses the KML reader. The LIBKML driver is a bit more tolerant 
and successfully reads the file.

Even

> hi.  i'm a newbie, trying to do some scripting which involves reading in
> a KML file and then, after some processing, writing it out again.  i had
> noticed that when running ogrinfo(1) on my input file, i wasn't seeing
> all the point of the polygon in the MultiGeometry of my KML file, but
> thought maybe that was just some form of abbreviation.  but, that
> behavior seems to explain a problem i'm running into.  so, i tried
> "ogr2ogr -f kml", and get the same behavior, my polygons are reduced to
> a single point (the initial/terminal point).
> 
> i'm curious if it's obvious what i'm doing wrong, or if this is a known
> bug, or...
> 
> my set up is a Mac running Fink:
> ----
> bash greg-minshalls-mbp-2: {1773} ogr2ogr --version
> GDAL 2.1.1, released 2016/07/07
> 
> bash greg-minshalls-mbp-2: {1774} uname -a
> Darwin greg-minshalls-mbp-2.local 15.6.0 Darwin Kernel Version 15.6.0: Thu
> Jun 23 18:25:34 PDT 2016; root:xnu-3248.60.10~1/RELEASE_X86_64 x86_64
> 
> bash greg-minshalls-mbp-2: {1775} fink --version
> Package manager version: 0.39.3
> Distribution version: selfupdate-rsync Sat Jul 30 10:25:32 2016, 10.11,
> x86_64 Trees: local/main stable/main local/injected
> 
> Copyright (c) 2001 Christoph Pfisterer
> Copyright (c) 2001-2016 The Fink Package Manager Team
> This program is distributed in the hope that it will be useful,
> but WITHOUT ANY WARRANTY; without even the implied warranty of
> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> GNU General Public License for more details.
> ----
> 
> a fairly reduced test case is running "ogr2ogr -f kml clone.kml bug.kml"
> where "bug.kml" is:
> ----
> <?xml version="1.0" encoding="UTF-8" ?>
> <kml xmlns="http://www.opengis.net/kml/2.2">
>   <Document id="root_doc">
>     <Folder><name>Soberanes</name>
>     <Placemark>
>       <name></name>
>       <description></description>
>      
> <Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fi
> ll></PolyStyle></Style>
> <MultiGeometry><Polygon><outerBoundaryIs><LinearRing><coordinates>-121.8595
> 39607243,36.4458603356853,0,-121.859010098152,36.4456932276546,0,-121.858129
> 504875,36.4453991811578,0,-121.857325735135,36.4448820131963,0,-121.85675971
> 936,36.4445384607921,0,-121.856809120566,36.443876500306,0,-121.856430592837
> ,36.4429020177187,0,-121.856167728728,36.4423261178737,0,-121.855775934253,3
> 6.4418654654089,0,-121.855094715237,36.4418565756417,0,-121.854381527851,36.
> 4413356919538,0,-121.853600655401,36.4411842000059,0,-121.852822068116,36.44
> 10692737567,0,-121.852532048225,36.4410353302927,0,-121.851959423457,36.4403
> 344818693,0,-121.85201799593,36.4398188037771,0,-121.85285513667,36.43941805
> 73464,0,-121.85328948567,36.4391070481673,0,-121.853289093379,36.43837378995
> 67,0,,-121.827771447749,36.3590241926845,0,-121.827662452176,36.358704030767
> 7,0,-121.827882572315,36.3582984116496,0,-121.828496319454,36.358129295858,0
> ,-121.82929464932,36.3580608917042,0,-121.829555373568,36.3579419054821,0</c
> oordi nates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>
>     </Placemark>
>     </Folder>
> </Document></kml>
> ----
> 
> thanks in advance for any clues.
> 
> Greg Minshall
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> gdal-dev at lists.osgeo.org
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