Cort (2) [Avatar] Offline
#1
I had a little trouble installing WKT Raster using the precompiled binaries. I followed the link in the text (http://www.postgis.org/download/windows/experimental.php) to http://www.postgis.org/download/windows/pg83/experimental/wktraster/ and downloaded wktraster_pg83.zip.

I followed the instructions in the zip's ReadMe.txt file, but kept getting this error:

NOTICE: type "raster" is not yet defined
DETAIL: Creating a shell type definition.

ERROR: could not access file "$libdir/rtpostgis": No such file or
directory

Until I copied "libgdal.dll" from the zip file's /bin directory into PostgreSQL's /bin directory. You may want to update this in the ReadMe.txt.

Thanks and the book is coming along great!

Cort
regina.leo (265) [Avatar] Offline
#2
Re: Chpt 13 Section 13.2
Cort et. al,

Thanks for pointing that out. We'll be releasing a new update of wktraster binaries probably late this week or early this weekend.

FYI - a number of improvements have been made since that last binary release. For one, there is now an ST_Intersects and ST_Intersection functions.

Some memory leaks have also been addressed that made ST_DumpAsPolygons slower than it should be.

Also check out Pierre's tutorial

http://trac.osgeo.org/postgis/wiki/WKTRasterTutorial01

If you happen to be at FOSS4G this year, both Pierre Racine and Jorge Arevalo will be giving talks on PostGIS WKT Raster

http://2010.foss4g.org/presentations_gen_sel.php