When opening a PostGIS datasource using the OGR C# wrapper in .Net, the connection string must have "PG:" prefix, as follows: ... Imports OSGeo.OGR ... Dim drv As OSGeo.OGR.Driver... read more

If you have ECW map images without world files, they may work fine in ArcGIS but MapInfo won't put them in the right place as it can't read the header information in the ECW. You could opening them... read more

Text below is reproduced from: http://mas-kono-tes.blogspot.com/2011/03/getting-mapserver-to-work-on-iis75.html and gives a reasonable overview of how to install mapserver - especially how to... read more

In earlier versions of mapserver you might have a regular expression that looked like: EXPRESSION ('[HAB_TYPE]' =~/^A1.1/)   If you try this with mapserver 6 however (especially on large datasets)... read more

If you have ECW map images without world files, they may work fine in ArcGIS but MapInfo won't put them in the right place as it can't read the header information in the ECW. You could opening them... read more

Originally posted by Mike Lush, then augmented by Keith Westcott. You're unlikely to think about this until you need to, but there is no obvious way of searching within a bunch of files for text ... read more

This site can convert just about anything to just anything else. E.g. I used it to do MapInfo to KML and GPX. I think it uses ogr2ogr under the... read more

It is possible to point a query at a table in a remote database that is not linked to the current database; for example this would transfer the some of the fields from a remote copy of the Northwind... read more

Windows Server 2008 x64 and Windows 7 x64 have both 32 bit ODBC data sources and 64 bit ODBC data sources. They are managed separately. Setting up a 32 bit ODBC connection in Windows Server 2008 x64. ... read more

To backup in verbose text format (from Windows/DOS command line): pg_dump -C -f backupfile.sql -h localhost -p 5433 -U postgres databasename To restore backup in verbose text format (from... read more