Hi,<br><br>Here's my Report for Week 3<br><br><a href="http://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools#Week4Report">http://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools#Week4Report</a><br>

<br>Have a good weekend,<br>Qing<br>