One of the things that should be taught to GIS students at Uni but isn’t in a lot of courses is the notion of space keys or space-filling curves. The mathematics behind these keys was done before computing by mathematicians like: Giuseppe Peano David Hilbert The one that most GIS people are introduced to isRead More
One of the things that should be taught to GIS students at Uni but isn’t in a lot of courses is the notion of space keys or space-filling curves. The mathematics behind these keys was done before computing by mathematicians like: Giuseppe Peano David Hilbert The one that most GIS people are introduced to isRead More
Simon Greener has university qualifications in geomatics, computing science, database technologies, and project management. He started his working career with mining and surveying experience. He then found his calling as a computer scientist with his first job being as a database programmer on IBM mainframes for Telstra. He switched to GIS three years later throughRead More
On Tuesday this week (August 1st) I found myself in a meeting room with ESRI Ireland staff in Dublin. I was there acting in a quality assurance role for the principal contractor (who has little ESRI technology knowledge) in a joint solution being architected between the principal and ESRI Ireland for a specific customer ofRead More
I have spent quite a bit of time at night over the past few weeks re-writing the fundamental Sdo_Geometry access PL/SQL package so that it draws from the experiences gained when I wrote a read-only access Class in VB6 that used Oracle Objects For OLE (OO4O). I converted the basic “Factory” components of the VB6Read More
I was reminded by a confrare who works on MapInfo’s excellent SpatialWare product that I had not mentioned Hanen Samet alongside Giuseppe Peano and David Hilbert. Thanks for the reminder. Hanen Samet is one of the giants of the spatial applications of “regular tesselation of space” decompositions and “space curves”. I have read some ofRead More
I attended an excellent Modelling and Development SIG in Manchester last week. When the Oracle Product Manager for FUSION made her presentation there was much interest. I won’t go into the comments from the floor about the instability of recommended Java technologies because I want to concentrate on Oracle’s ADF. What is ADF? ADF standsRead More
Today I had need to add some new functionality to my Oracle Spatial PL/SQL packages (will be available for download from my website soon). I wrote the new functions and tested them against 10.2. But the deployment version was 9.2. Problems occurred! I could isolate the new functions in 10g SDO_UTIL but not in previousRead More
I had meant to write some nice things about ESRI’s Geodatabase technology (the Bouquet part of the blog) but then hand out a brickbat over their announcement of a new ESRI Spatial Data Type for Oracle which will compete directly with Oracle’s own, ISO and OGC compliant implementation. But I only just saw the DirectionsRead More
I have been doing some Research and Development (R&D) work for company in the UK. As part of that R&D I have been asked to recommend a method whereby their products can access some of the many proprietary geospatial formats that exist in geospatial-land. I had seen the announcements on the open source verison ofRead More