Changes between Version 5 and Version 6 of WKTRasterTutorial01

Timestamp:

Jun 10, 2010, 1:41:12 PM (14 years ago)

Author:

pracine

Comment:

—

WKTRasterTutorial01

@@ -1 +1 @@
 = WKT Raster Tutorial 1 - Intersecting vector buffers with large raster coverage using PostGIS WKT Raster =
 
-This exercise will show you how to do a very classical raster/vector analysis with PostGIS WKT Raster. Basically the problem is to compute the mean elevation for buffers surrounding a series of point representing caribou observations. You can do this kind of analysis pretty easily in any GIS package but what is special here and is not easy to do in ANY GIS package is the size of the datasets used (900 MB or raster data), the simplicity of the queries and the speed at which we will get the results. 
+This tutorial will show you how to do a very classical raster/vector analysis with PostGIS WKT Raster. Basically the problem is to compute the mean elevation for buffers surrounding a series of point representing caribou observations. You can do this kind of analysis pretty easily in any GIS package but what is special here and is not easy to do in ANY GIS package is the size of the datasets used (900 MB or raster data), the simplicity of the queries and the speed at which we will get the results. 
 
 We will describe the steps mainly on Windows, but Linux gurus will have no problem writing the equivalent commands in their favourite OS. We assume that PostgreSQL, PostGIS and PostGIS WKT Raster are well installed. Refer to the readme file of each software to install them properly. The version used are: