Anyone who has browsed this blog enough has probably figured out that I am a fan of Doctor Dobb’s Journal. This month’s issue inaugurates a new column by Herb Sutter dealing with concurrency. In my opinion, the confluence of mult-processor/multi-core systems with a greater emphasis on server-based GIS makes concurrency a huge issue for the…
Category: arcobjects
Consuming GeoRSS in ArcMap With InMemoryWorkspaceFactory
This will be my last post for a couple of weeks. I’m heading out to Florida tomorrow to spend time with my family and the Mouse. But before I head out, I thought I’d share a little something I’ve been working on. I’ve been playing the last few days with the InMemoryWorkspaceFactory class in ArcObjects….
Bringing It All Together…
These are pretty fun times to be working in GIS. There’s an explosion of new technologies across the whole spectrum and integration possibilities are seemingly boundless. Back when I got started, ESRI and Intergaph were duking it out and others, like MapInfo, were out there on the periphery also. GRASS was flying the OS banner…
Rotating a Point Around a Base Point
A while back, I was working on a project that required us to rotate a polygon around a base point and do a spatial query to analyze some underlying demographic data. I was working in ArcObjects and could find no intrinsic way to do what I needed to do so I wrote the following routine….
Creating ArcObjects Spatial Reference Objects From PostGIS Spatial Reference Definitions
As discussed in my previous post, I’m trying to beef up the spatial reference support in zigGIS. I am doing this mainly to introduce support for user-defined spatial references. It pretty much boils down to querying the the appropriate SR from the PostGIS spatial_ref_sys table and applying the value of the srtext column to create…
zigGIS and Spatial References, Part 3
This post updates this post and this one. One of our beloved 5 users ;-), James, pointed out recently that zigGIS still has issues with user-defined coordinate systems. Alas, this is true. When we implemented support for on-the-fly “reprojection,” we limited it to the standard EPSG SRIDs supported by both PostGIS and ArcGIS. This was…
Moving Forward On A Couple of Fronts
Well, it’s been a while since I’ve posted anything technical. Work has been a little crazy and I’m not willing to carve into time with the family to keep other stuff moving. As a result a few things have been sitting for a while but I’ve been able to get around to two things. First,…
zigGIS 1.2 Is Out
Congratulations to Paolo for getting zigGIS 1.2 out the door. He’s put a lot of work into fixing problems with selections and renderers and making it a much more usable tool. His post contains a list of features implemented at this version and it’s really a huge step forward. I am focusing on developing catalog…
PostGIS and ArcGIS 9.2
Updating my earlier post: I completed my upgrade to 9.2 yesterday with the installation of the last service pack. The first thing I did was upgrade zigGIS to ensure that there wouldn’t be problems. I have to say that the first thing I noticed was all of the tools ESRI has integrated with VS2005. I…
Almost There with 9.2
Okay, I have no one to blame but myself. I have Desktop and the full EDN kit (except for ArcIMS) installed. Therefore, I’ve uninistalled everything 9.1 and reinstalled everything 9.2 and now I get to do the service packs. One day, I’ll get back to coding, I’m sure. Meanwhile, the front of my forehead keeps…