Changes between Version 9 and Version 10 of DevWikiDocNewFeature

Timestamp:

Aug 28, 2009, 5:12:21 AM (15 years ago)

Author:

robe

Comment:

—

DevWikiDocNewFeature

@@ -17 +17 @@
   5.  Name your xml file accordingly e.g. mysuperfunc.xml.
   6.  Submit this file as part of your new function patch.
+
+
+= Using the WKT image magick image generator to build images! =
+
+As of PostGIS 1.4 documentation we have an image autogenerator -- thanks to Kevin.  To use
+it to generate images for your examples, do the following
+
+1. Define queries using your new function or if you want to provide images for existing then do that and be carefull to make sure the generated geometries fit in a 200x200 grid.  
+
+2. For your query do an ST_AsText to generate the WKT output of it and save this in the image_src folder on
+doc/html/image_src with a .wkt extension prefixed with a style for each geometry. There are lots of examples to look at in that folder.
+
+
+You can have several wkts in your .wkt if you want them to be overlaid on top of each other
+
+Below is an example:
+
+{{{
+Style1;MULTIPOINT ( 8 24, 10 92, 12 154, 17 68, 28 10, 29 52, 29 84, 55 50, 56 24, 131 14, 160 180, 189 180 )
+Style2;POINT(60.3333333333333 77.6666666666667)
+}}}
+
+3.  In the doc where you want the image placed, give it the same name as your file except instead of 
+.wkt extension use a .png.  The files when generated will end in a .png extension and be placed in the images folder.
+
+4. Add your new images to the doc/html/image_src/Makefile build script
+