This article was previously published on GeoChalkboard, and has been reproduced here with permission. It was originally published as two separate articles which have been combined here to emphasize their relevance to the geospatial web. GeoChalkboard is published by Geospatial Training Services who provide a range of geospatial web courses.

Many ArcGIS Server applications need to be able to query data from a map service and display the results in a tabular structure. In this post I will show you how to use the DojoX DataGrid along with ItemFileReadStore and QueryTask from the ArcGIS Server JavaScript API to display your query results in a tabular structure. The process is really quite simple once you understand the basic concepts.

Last year, the Ordnance Survey (Britain's national mapping agency) announced that they were going to freely release much of their data for non-commercial applications. Although some people quickly assumed this would be everything, most of us were well aware that only some of the data would be 'free'. For example Mastermap was almost certainly going to continue to be a commercial-only product.

Details are finally beginning to emerge with the Ordnance Survey's publication, Policy Options for Geographic Information from Ordnance Survey - Consultation. As expected, the raster products that were already available through OpenSpace will be included in the initiative (they are already 'free', but their delivery & use will become more flexible). 1:25,000 colour raster and the "MiniScale" (1:1,000,000) raster products will also be added to the free raster range.

The free vector products will include Code-Point (full grid-referenced postcode data - previously announced), Boundary Line (1:10,000 boundary dataset - used by a lot of local governments),  Meridian 2 (transport network and topographic themes), and Strategi (1:250,000 scale topographic database).

The full document is available as a 91 page PDF document, here.

Yes we returned back from our Christmas / New Year grand tour of New Mexico a few days ago, safe and sound. For those who are interested, Marcy kept a blog and I've published a few photos at fotopic. The blog has quite a bit of ornithological content, and my photos have a leaning towards geological subjects. The only geographic content in the photos, is a photograph of our dog at Four Corners - the only place where four US States meet at one point. We almost managed to get one foot in each State but he had an aversion to Colorado for some reason! We had a good time, and we both feel refreshed for the new year.

Normal GeoWebGuru service will resume on Monday (tomorrow) with news postings and a GeoSpatial Training Services article about using ArcGIS Server Query Results with Dojo. Then next week we have the start of a two-part series about Polar Map Projections.