Thinking in GIS

As many of you can have already read, ArcSDE for Postgres is coming out at ArcGIS 9.3 (it is currently in the release candidate state). It will let you store geometries in two formats, Esri geometry and PostGIS geometry, in the same fashion ArcSde for Oracle is letting Esri or Oracle geometries be stored. I have seen some interest in the GIS community about this new, and i was reading interesting posts by Bill Dollins, Paul Ramsey, James Fee and Dave Bouwman, so I thought i would post here my opinion. Plus, as some of you may already know, zigGis...
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zigGIS 1.2, the Open Source ArcGIS Desktop's connector to PostGIS, has just been released and you can download it here.This is a major release, as far it implements new important features like selections and rendering. At this time editing is still not supported (so it is still a read only connector).Also ArcMap documents persistence is now fully supported, meaning that you can save your mxd document with your PostGIS layer in them, and then open them again without problems.zigGIS should correctly work with ArcGis 9.0 (sp3), 9.1 and 9.2. Before installing it don't forget to install .NET support for ArcGis.Here...
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In my previous post I have showed you how to install and using zigGIS for adding PostGIS data into ArcMap.From the ArcMap user interface you just need to press the zigGIS button and an "Add PostGIS data" dialog will be shown to you. From there you can set a zig File path, where PostGIS connections settings are stored, and then a PostGIS layers list will be shown and you can check which layer(s) add to the map.In this post I will show how to programmatically use zigGIS and ArcObjects to add PostGIS data into ArcMap.zigGIS is a Microsoft .NET 2.0...
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zigGIS is an Open Source PostGIS connector for ArcGIS Desktop, that enables ArcMap to add PostGIS layers in the map.Differently from other kinds of connectors, like for example PgArc, the very nice feature of zigGIS is the direct-read of PostGIS data, without the needs of proxy shapefiles. This meaning that the PostGIS features are directly readed and displayed in ArcMap from the PostGIS data source without a previous conversion to a Shapefile or personal GDB.This is a very interesting project, but still in a very early phase, in fact there are still important issues that are planned to be solved...
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I wanted to leave a comment in this Bill Dollin's post, but after that it came out to my mind to leave a trackback to it, and going with a my own post on this subject as far as I have several things to discuss about.In the OSS jungle, it looks there are in the last times more and more solutions and projects based on commercial closed-code software. For example zigGIS, the Open Source ArcGIS connector for PostGIS, in which I am involved, is by itself an OS project tied to proprietary frameworks (Microsoft and Esri). This is many times...
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