Based on the errors, it looks like you will need EXTENT to your map file at the MAP level.
What do you get when you run ogrinfo against the two shapefiles? Any difference? Are you adding a URL var for the layer name? Try setting LAYER STATUS to DEFAULT for both layers and see if you get an image back. David. From: [email protected] [mailto:[email protected]] On Behalf Of Kent Morrison Sent: Tuesday, January 19, 2010 3:17 PM To: '[email protected]' Subject: [mapserver-users] Images returning blank I have mapserver 5.4.2 installed. I have two different shape files, one renders properly the other only returns blank images The debug log for the one that does not work returns: [Tue Jan 19 20:34:59 2010].212000 CGI Request 1 on process 1180 [Tue Jan 19 20:34:59 2010].212000 mapserv(): Web application error. No way to generate map extent. [Tue Jan 19 20:34:59 2010].212000 msCalculateScale(): General error message. Invalid image extent, minx=-1.000000, miny=-1.000000, maxx=-1.000000, maxy=-1.000000. [Tue Jan 19 20:34:59 2010].212000 msTileSetExtent (-13090872.991896, 6046512.903143) (-13071381.549686, 6066004.345353) [Tue Jan 19 20:34:59 2010].227000 msDrawMap(): Layer 0 (SpokaneTrafficFlows), 0.000s [Tue Jan 19 20:34:59 2010].227000 msDrawMap(): Drawing Label Cache, 0.000s [Tue Jan 19 20:34:59 2010].227000 msDrawMap() total time: 0.015s [Tue Jan 19 20:34:59 2010].274000 msSaveImage() total time: 0.047s [Tue Jan 19 20:34:59 2010].274000 mapserv request processing time (loadmap not incl.): 0.062s [Tue Jan 19 20:34:59 2010].274000 msFreeMap(): freeing map at 01A5AF00. [Tue Jan 19 20:34:59 2010].274000 freeLayer(): freeing layer at 020E4160. the map file is: MAP IMAGETYPE AGG SIZE 256 256 SHAPEPATH "/MapServerData/ShapeFiles/1" IMAGECOLOR 255 255 255 TRANSPARENT ON FONTSET "../../fonts/fonts.list" CONFIG PROJ_LIB "c:\ms4w\proj\nad\" CONFIG MS_ERRORFILE "c:\ms4w\tmp\errors2.txt" DEBUG 5 PROJECTION "init=epsg:4326" END OUTPUTFORMAT NAME 'AGG' DRIVER AGG/PNG IMAGEMODE RGB END #Outputformat LAYER NAME SpokaneTrafficFlows DATA TrafficFlow_2007 STATUS ON TYPE LINE DEBUG 5 CLASS NAME "classSpokaneTrafficFlows" STYLE COLOR 127 255 64 OPACITY 50 OUTLINECOLOR 255 128 64 WIDTH 3 END #style END #class END #layer END #Map running shp2img.exe returns: msLoadMap(): Image handling error. Unable to initialize image msCalculateScale(): General error message. invalid image extent .... I get the same results for shp2img on the working shapefile/map file. THE FOLLOWING WORKS: MAP IMAGETYPE AGG SIZE 256 256 SHAPEPATH "/MapServerData/ShapeFiles/1" IMAGECOLOR 255 255 255 TRANSPARENT ON FONTSET "../../fonts/fonts.list" CONFIG PROJ_LIB "c:\ms4w\proj\nad\" PROJECTION "init=epsg:4326" END OUTPUTFORMAT NAME 'AGG' DRIVER AGG/PNG IMAGEMODE RGB END #Outputformat LAYER NAME TxCounties DATA co48_d00 STATUS ON TYPE Polygon CLASS NAME "classTxCounties" STYLE COLOR 0 255 0 OPACITY 25 OUTLINECOLOR 0 0 0 WIDTH 2 END #style END #class END #layer END #Map Anyone have any idea's why this might not work in the first case? Or what else can I do to debug the problem? Kent
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