Post List - Exegesis Spatial Data Management

Notes on importing spatial data into SQL Server 2008

Posted by Crispin Flower 17 November 2011 Categories: ArcGIS GIS (general) GISquirrel MapInfo Professional SQL Server

There are a variety of ways to do this, but often you will hit issues with data validity. If you have our ArcGIS Maplink product (or ArcSquirrel) then loading data in using this into a... read more

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Where to find the Ordnance Survey registration files

Posted by Crispin Flower 15 November 2011 Categories: ArcGIS GIS (general) MapInfo Professional

The registration files (world files and tab files) for all Ordnance Survey raster datasets can be downloaded from: http://www.ordnancesurvey.co.uk/oswebsite/products/geo-referencing.html These are... read more

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Don't forget the PG tip

Posted by Crispin Flower 15 November 2011 Categories: OGR/GDAL PostgreSQL/PostGIS

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

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Using ECWs without world files in MapInfo

Posted by Crispin Flower 12 November 2011 Categories: GIS (general) MapInfo Professional

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

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Getting MapServer to work on IIS7.5 Server 2008

Posted by 12 November 2011 Categories: CGI IIS MapServer

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

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Mapserver 6 and regular expressions

Posted by 08 November 2011 Categories: MapServer OGR/GDAL

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

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Using ECWs without world files in MapInfo

Posted by Crispin Flower 30 September 2011 Categories: MapInfo Professional

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

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How to search the contents of files using regular expressions

Posted by Crispin Flower 09 December 2010 Categories: Regular expressions

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

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GIS conversion web site

Posted by Crispin Flower 30 November 2010 Categories: GIS (general)

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

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How to query remote databases in MS Access

Posted by Crispin Flower 07 April 2010 Categories: MS Access

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

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