Post List - Exegesis Spatial Data Management

Merging Hyper-V virtual machine snapshots – monitoring progress

Posted by 12 June 2013

Its not a great idea to run with multiple snapshots in a production setup as it slows things down. If you remove a snapshot in Hyper-V manager you might think that that's the job done. Well it isn’t... read more

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SQL server log files–reducing size

Posted by 12 June 2013

On ESDM-SQL1 all databases that are added should have their backup strategy set to SIMPLE (as opposed to FULL). This means that we can recover to last nights backup in the event of disaster – but we... read more

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Fixing ArcGIS personal geodatabase autonumber problem

Posted by Steve Ellwood 29 May 2013 Categories: ArcGIS HBSMR MapLink

A number of HBSMR clients have been experiencing problems with creating new features in ArcGIS personal geodatabases via MapLink, resulting in a error similar to this: Your edits could not be... read more

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asp.net - json compression

Posted by Stewart Bellamy 29 May 2013 Categories: ASP.Net IIS

Dynamic content compression does not work by default in asp.net for ‘application/json’ mime types, and given that we’re doing more mobile apps and client side data requests this can make quite a... read more

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Find "Godzillas" in your ArcGIS feature class (by counting vertices)

A useful way to select and generalise only the more complex features

Posted by Sylvina Tilbury 15 May 2013 Categories: ArcGIS MapLink Python

To count the number of vertices: Add a new field to the feature class called, for example, VertexCount Use the Calculate Field tool within the attribute table, or in ArcToolbox, with the... read more

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Corrupt VHD disks and possible ways to repair

Posted by 10 May 2013

A corrupt VHD can spoil your day! Sometimes the can appear fine, but you are unable to move / copy them as they are written over a bad sector on the disk and the copy process appears to be working... read more

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Scrambled maps with Internet Explorer 10 and OpenLayers (and how to unscramble them)

Posted by Crispin Flower 24 April 2013 Categories: Internet Explorer OpenLayers

Today I let my Windows 7 laptop upgrade to IE10… some time later, I needed to take a look at one of our web mapping sites – the SFCC Angling Diary. After a few minutes of use, the map went weird as... read more

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IE10 errors when clicking icons in mojoPortal and ASP.Net 4 web sites fixed with .Net 4.5

Posted by Crispin Flower 17 April 2013 Categories: ASP.Net mojoPortal

I’ve noticed a couple of mojoPortal sites throwing errors when I click image buttons in the administration pages. For example, when editing page settings, clicking the little spanner icon to edit the ... read more

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asp.net - UI culture and dates

Posted by Stewart Bellamy 09 April 2013 Categories: ASP.Net

Don't rely on DateTime.Now.ToString() to populate varchar database fields that are used for holding dates. Or even better still don't use varchar fields for holding dates in the database - unless... read more

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Distributed File System (DFS) problems in ThumbsPlus 7

Posted by Crispin Flower 28 March 2013 Categories: LibraryLink ThumbsPlus

While installing LibraryLink and ThumbsPlus with a local authority client yesterday, we hit DFS problems immediately – images un-cataloguing themselves before our eyes, and thumbnails not appearing... read more

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