Lee -
Thanks; that's helpful. But I'd like to reduce the number of variables here. Are you saying that any request that contains the layer "main" will fail? Or will a request for that layer work sometimes and fail sometimes? I got the impression it was the latter and was scale-dependent (or seemed to be). If that's the case, can you provide a LAYERS=main URL that does work, and one that does not? - Ed From: Lee Keel [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 16, 2008 2:14 PM To: Ed McNierney; [email protected] Subject: RE: [UMN_MAPSERVER-USERS] mapserver error Sorry, I didn't get this email until I sent the last one. I know everyone must think I am total moron... Sorry! I absolutely agree that I am on quick sand!!! But even worse, I am desperately trying to figure out how the ground turned into quick sand. Here are 2 urls at the exact same zoom level. You will not be able to connect to these urls because they are not exposed to the internet. This is strictly an intranet site. Below are the corresponding layers from the mapfile as well. Thanks again for all this help. Sorry I am such a novice on this. This one works: http://webserver/cgi-bin/mapserv.exe?map=/mapserver/panamacity/gas.map&L AYERS=centerlines&TRANSPARENT=true&FORMAT=image%2Fgif&SERVICE=WMS&VERSIO N=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inima ge&SRS=EPSG%3A2238&BBOX=1599333.552523125,442498.63191875,1600908.786898 125,443255.9561375&WIDTH=1144&HEIGHT=550 <http://webserver/cgi-bin/mapserv.exe?map=/mapserver/panamacity/gas.map&; LAYERS=centerlines&TRANSPARENT=true&FORMAT=image%2Fgif&SERVICE=WMS&VERSI ON=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inim age&SRS=EPSG%3A2238&BBOX=1599333.552523125,442498.63191875,1600908.78689 8125,443255.9561375&WIDTH=1144&HEIGHT=550> This one returns error: http://webserver/cgi-bin/mapserv.exe?map=/mapserver/panamacity/gas.map&L AYERS=main&TRANSPARENT=true&FORMAT=image%2Fgif&SERVICE=WMS&VERSION=1.1.1 &REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS= EPSG%3A2238&BBOX=1599333.552523125,442498.63191875,1600908.786898125,443 255.9561375&WIDTH=1144&HEIGHT=550 <http://webserver/cgi-bin/mapserv.exe?map=/mapserver/panamacity/gas.map&; LAYERS=main&TRANSPARENT=true&FORMAT=image%2Fgif&SERVICE=WMS&VERSION=1.1. 1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS =EPSG%3A2238&BBOX=1599333.552523125,442498.63191875,1600908.786898125,44 3255.9561375&WIDTH=1144&HEIGHT=550> Here is the layer for the working URL: LAYER NAME "centerlines" STATUS ON CONNECTIONTYPE postgis CONNECTION "user=mapreader dbname=panamacity20 host=pgs-1giswebdb" DATA "the_geom from vcenterlines" PROCESSING "CLOSE_CONNECTION=DEFER" METADATA "wms_group_title" "centerlines" END PROJECTION "init=epsg:2238" END TYPE Line CLASS MAXSCALE 20000 TEXT ([st_name]) STYLE SYMBOL "circle" SIZE 3 COLOR 0 0 0 END STYLE SYMBOL "circle" SIZE 1 COLOR 255 255 255 END LABEL COLOR 0 0 0 OUTLINECOLOR 255 255 255 TYPE TRUETYPE ANGLE FOLLOW FONT arial SIZE 7 #ANTIALIAS TRUE POSITION CC MINDISTANCE 50 BUFFER 50 END END END Here is the layer for the non-working URL: LAYER NAME "main" GROUP "gas_theme" CONNECTIONTYPE postgis CONNECTION "user=mapreader dbname=panamacity20 host=pgs-1giswebdb" DATA "the_geom from main" PROCESSING "CLOSE_CONNECTION=DEFER" METADATA "wms_group_title" "main" END PROJECTION "init=epsg:2238" END STATUS ON TYPE LINE CLASS MAXSCALE 250000 STYLE SYMBOL "circle" SIZE 3 COLOR 255 0 0 END END END ________________________________ From: UMN MapServer Users List on behalf of Ed McNierney Sent: Wed 1/16/2008 12:33 PM To: [email protected] Subject: Re: [UMN_MAPSERVER-USERS] mapserver error Christopher - Thanks; it was not obvious to me that the second problem was also seen in the OpenLayers application. The image on the OpenLayers discussion seems to indicate a MapServer crash or other failure, as you've already suggested there. Lee, I think you should ignore the "blurry" problem for now and focus exclusively on: " I take the URL that is requesting the information from mapserver, then I get: "The specified CGI application misbehaved by not returning a complete set of HTTP headers." " You seem to be building on quicksand, and if you don't fix the foundation there's no point in trying to figure out why the pictures on the walls don't hang straight. If you can post details about the URL and the error we might be able to try to help debug. Looking for debug and Web server logs can also be helpful to understand why the CGI failed, as is running mapserv from the command line. - Ed Ed McNierney Chief Mapmaker Demand Media / TopoZone.com 73 Princeton Street, Suite 305 North Chelmsford, MA 01863 [EMAIL PROTECTED] Phone: +1 (978) 251-4242 Fax: +1 (978) 251-1396 -----Original Message----- From: Christopher Schmidt [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 16, 2008 1:18 PM To: Ed McNierney Cc: [email protected] Subject: Re: [UMN_MAPSERVER-USERS] mapserver error On Wed, Jan 16, 2008 at 01:13:33PM -0500, Ed McNierney wrote: > Lee - > > INTERLACE=ON is not "wrong". Tim is pointing out that if you're viewing an interlaced output image, the first, alternating set of scanlines will be displayed and then your browser will start again at the top of the image, filling in the alternate interlacing lines. This will cause the top of the image to appear complete while the bottom is "blurry". You can see variations on these visual artifacts depending on your browser, and the effect is more pronounced over a slow connection. > > But if the image still looks blurry at the bottom even after you're certain the image has been completely loaded, then this is not your problem. Note that this will almost never be the case with OpenLayers because OpenLayers hides images until they are completely loaded (for technical reasons unrelated to this), so if someone reports this behavior in OpenLayers, you can usually be sure it's not an interlacing thing. > It's hard to diagnose visual problems in text; can you either post the output image or (preferably) a public URL where the image can be viewed? There is a 'bmp' attached to http://openlayers.org/pipermail/users/2008-January/004506.html which might be the one. Regards, -- Christopher Schmidt MetaCarta
