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Written by Richard Marsden
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Monday, 18 January 2010 09:27 |
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The first part of this article looked at different ways of producing polar maps and surveyed a number of different azimuthal projections that are often used for polar maps. In this second part, I produce a working implementation using UMN MapServer and OpenLayers. The working implementations can be found in the Polar Map section of Equal-Area-Maps.com . |
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Written by Richard Marsden
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Monday, 11 January 2010 10:30 |
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With the success of my earlier series on global equal area map projections (starting with this overview), I received a number of requests to produce a similar how-to article for polar maps. The first part of this article (published here) provides an overview of a number of different map projections commonly used for polar maps. Next week, I shall provide a guide to producing a working map of the northern hemisphere centered on the North Pole, using the Stereographic Projection. The results of these articles can be seen in the new Polar Projections section of the Equal Area Maps website. Note that only one of these polar projections actually has the equal area property. |
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Last Updated on Monday, 18 January 2010 07:51 |
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Written by Richard Marsden
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Monday, 14 December 2009 08:54 |
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The Ordnance Survey is the UK's national mapping agency. They have a history of leading the way in surveying technology and digital map products. However, their digital products also have the reputation of being very expensive. Recently, the Ordnance Survey launched their "free" OpenSpace service to allow users to add interactive maps to websites. This article is an overview of this service. |
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Last Updated on Thursday, 17 December 2009 08:01 |
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Written by Eric Pimpler
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Monday, 30 November 2009 09:40 |
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This article was previously published on GeoChalkboard, and has been reproduced here with permission. GeoChalkboard is published by Geospatial Training Services who provide a range of geospatial web courses.
As a GIS web application developer you want to focus on building functionality specific to the application you are constructing. Spending valuable time and effort adding basic GIS functions such as zooming and panning to your application detract from what should be your primary focus. Luckily, ESRI has made the addition of navigation and drawing toolbars to your application a snap with the ArcGIS Server JavaScript API. In this post I’ll show you just how easy it is. |
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Last Updated on Monday, 30 November 2009 09:42 |
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Written by Eric Pimpler
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Monday, 04 January 2010 14:41 |
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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. |
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Last Updated on Monday, 04 January 2010 14:49 |
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Written by Richard Marsden
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Monday, 07 December 2009 09:42 |
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CloudMade have been receiving a lot of publicity recently, and is often talked about as if it is the commercial wing of OpenStreetMap. Whilst CloudMade's founders founded OpenStreetMap (Steve Coast) or were involved from a very early stage (Nick Black), this is not entirely true. CloudMade is an independent company who produce a range of tools and libraries for mobile, desktop, and geo-web applications that are based around OpenStreetMap data. They also sponsor many OpenStreetMap events. This article is an overview of CloudMade products. |
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Written by Richard Marsden
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Monday, 23 November 2009 11:11 |
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Anyone browsing the OSGeo software lists will find a number of catalog and infrastructure applications. They look to be mature and active projects, but they simply fail to grab the attention that applications like GeoServer and OpenLayers do. What are these applications, and why are there a number of applications that appear to do very similar things? This article attempts to clear things up and dives into such applications as MapBender, GeoNetwork OpenSource, and deegree; as well as take a look at Spatial Data Infrastructures. |
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Last Updated on Monday, 03 May 2010 19:48 |
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