Re: [UMN_MAPSERVER-USERS] Raster Analysis and MapServer

[Lawrence, Kevin]

Hi Brian   Yes I have played with rasters for a few years.  Most of what we are doing is map algebra so taking one - many raster(s) and executing some function and making the final raster available for viewing with mapserver.  cellwise work is the simplest so I use simple C programs to do that.  neighbourhood works gets a little more fun.  I have not done the vector to raster conversion on the fly, in first round this is exactly what mapserver is doing.  I give a shapefile and it gives me a raster.  for a broader approach the idrisi or grass libraries are where I head.  GDAL support?   This is a thread I will watch with much interest.  -----Original Message----- From: UMN MapServer Users List [mailto:[EMAIL PROTECTED]On Behalf Of Fischer, Brian Sent: December 19, 2005 6:38 PM To: MAPSERVER-USERS@LISTS.UMN.EDU Subject: [UMN_MAPSERVER-USERS] Raster Analysis and MapServer MapServer users,   I have a project that I would like to generate raster data on the fly and use MapServer to display the results.  I am curious if anyone else has tried this.  If so what tools did you use to do the raster analysis and how did it work?  Let me explain more about the process.   1. Someone would go to a web page and click a button to start the process. 2. Some tool would create raster1 from a line vector file (contours) (need a contour to raster algorithm) 3. Some tool would do a raster calculation (raster1 minus raster2) to produce a final raster 4. MapServer would display the final raster.   I need all of this process to happen over the web.  I think I can use GRASS to do the raster analysis, but I am curious if anyone else has done this sort of thing.  My other option is to go to ESRI's ArcGISServer (which I don't want to do, if I don't have to).  Are there any other tools available to do raster analysis (spatial analysis) on the web?   Any insight would be helpful.   Thanks, Brian   Brian Fischer, GIS Specialist/Programmer Houston Engineering, Inc. | Leave Nothing to ChanceTM 10900 73rd AVE N, Suite 106 Maple Grove, MN 55369 Phone:  763.493.4522 / Fax:  763.493.5572 Email:  [EMAIL PROTECTED] Website: www.houstonengineeringinc.com