WOW! Finally... I have got working using this http://spanring.name/blog/wp-content/files/kml2gml.xsl
from here http://www.perrygeo.net/wordpress/?p=3 which most of you must be already aware I suppose! Cool... it works since QGIS does read GML's. I am still interested in my "SOLUTION" (especially in the "-f" parameter in the "cur" command). Does ogr2ogr convert from GML to GRASS vector files? Oh... I am trying it out right away... ;-) On Sun, 2008-02-24 at 16:05 +0100, Nikos Alexandris wrote: > Maybe I am just loosin' my time struggling to import KML polygons in > GRASS but here is my attempt and my problems. I have read past threads > but I didn't really found the "SOLUTION" > > I understand that it should be easy to play with xpath and xslt but > since KML's are XML's but, again, I have no idea about xpath and xslt > and I try do it the way I "know" more or less... ;-p > > If there is already a solution... I would be more than greatful since I > am in the last phase of my current work. > > > Here is my attempt to import coordinates the "hard way": > --- > > 1. Decompress KMZ and get the "KML" > > > # I was told, and I read, that KML are just XML's. So... > 2. Replacing the KMLheader <kml xmlns="http://earth.google.com/kml/2.2";> > > with > > <?xml-stylesheet type="text/xsl" href="kml2html.xsl" ?> > <kml> > > > 3. Saving the KML file in the same folder with an .xsl (in my case > kml2html.xsl given by a friend --- file attached) > > 4. Open with a browser and either (a) "copy-paste" the coordinates > for which I am interested or (b) "save as" txt file. > > 5. I choose (a) for my first attempt and save some coordinates in a txt > file and try to import them "sacrificing" the meta-data. > > ["example.xyz" with coordinates attached.] > > The problem is that the coordinates are given in form of x,y,z but > continuously... that is one "x,y,z" field after another separated by > "space" and not in separate lines! > > It looks like this: > > x1,y1,z1 x2,y2,z2 x3,y3,z3 [...] xi,yi,zi > > and NOT like this: > > x1,y1,z1 > x2,y2,z > x3,y3,z3 > [...] > xi,yi,zi > > 6. I have studied v.out.ascii (since it is the reverse of v.in.ascii) > and I came up with this bash loop which WORKS in the command line. I can > import the desired coordinates in GRASS and I think it should be easy to > "clean" and convert in areas. > > ["example.grass-ready.xyz" attached] > > The problem is that my "solution" DOES NOT work in a script due to an > error in "cut -d ' ' -f$i #### How can I use in -f a variable (stepwise > increasing number) instead of a constant number? > > > INPUT=example.xyz > > OUTPUT= just a name > > TYPE=B ### "B" for "boundaries" ...or "L" for lines better? > > i=0 > > PRIMITIVES="`cat $INPUT | wc -w`" > > echo "$TYPE $PRIMITIVES" > $OUTPUT.grass-ready; cat $OUTPUT.grass-ready > | echo "\nVERTI:">> $OUTPUT.grass-ready > > until [ $i -gt $PRIMITIVES ]; do cat $INPUT | cut -d' ' -f$i | tr ',' ' > ' >> $OUTPUT.grass-ready; let i=i+1; done ### Note in tr ',' ' ' -- > second character is a space > > 7. If this is going to work I was thinking to "grep" somehow the > metadata out of the "saved as txt file" and force it with a script in > the X.grass-ready ascii > > > ... > Some more questions: > > * ogr officially supports "KML" reading and writing. I can't read with > ogrinfo any KML file. I have read about "expat" support... but isn't > this activated by default in ogr coming with FWTools? > > > Sorry for the QGIS question: > > * QGIS suppports GML reading? > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user -- Nikos Alexandris . Department of Remote Sensing & Landscape Information Systems Faculty of Forestry & Environmental Sciences, Albert-Ludwigs-University Freiburg . Tel. +49 (0) 761 203 3697 / Fax. +49 (0) 761 203 3701 / Skype: Nikos.Alexandris . Address: Tennenbacher str. 4, D-79106 Freiburg i. Br., Germany
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