[mapserver-users] Not sure how to debug or fix -image not being produced due to msCalculateScale(): General error message
Mark Volz
MarkVolz at co.lyon.mn.us
Mon Jun 4 09:14:43 PDT 2012
Hello,
I received a report that a GeoMOOSE / Mapserver web mapping application http://geomoose.lyonco.org/MurrayMoose/ is creating pink tiles when zoomed out. I found out that the user has a very large monitor, so I thought that I may have forgot to set the MAP MAXSIZE parameter. That was not the issue.
Next, The user then reported that the pink screen only was present when boundary>municipal layer was turned on. This particular layer is part of a mapfile that contains several layers. All of the other layers are working fine. Also when he zooms into the map the layer appears on his application as expected. So I thought that the issue has to be with the layers* within the mapfile.
*The municipal boundary layer in GeoMOOSE is tied to the Townships and CityLimits layer in a single map file.
The layer file itself is a generic template that I have been using for several different applications without complaint. I also tested the application on my computer using a variety of browsers including IE8, which is the browser the user reported that he was having trouble with the pink screens. I also adjusted the browser size to make it the requested image larger, zoomed in and out, and I have not had any trouble.
I included a part of my map file as well as a log file from what I think is a unsuccessful request and a successful request from the same user.
MAP FILE SNIPPET:
LAYER #townships
NAME 'Townships'
DATA 'Murray/MurrTwpMCC'
STATUS ON
TYPE POLYGON
LABELMINSCALEDENOM 10000
CLASS
NAME 'Townships'
TEXT ([TWPNAME] TWP)
STYLE
SYMBOL 'countydashed'
SIZE 3
OUTLINECOLOR 0 50 0
COLOR -1 -1 -1
END #style
LABEL
ANTIALIAS TRUE
TYPE TRUETYPE
FONT vera_sans
MAXSIZE 9
SIZE 8
MINSIZE 6
ANTIALIAS TRUE
COLOR 10 10 10
OUTLINECOLOR 220 220 220
OUTLINEWIDTH 3
BUFFER 2
END #label
END #class
END #layer
LAYER
NAME 'CityLimits'
TYPE POLYGON
DATA 'Murray/MurrMuniMCC'
STATUS ON
LABELITEM 'NAME_'
CLASS
NAME 'City Limits'
STYLE
SYMBOL 'dashed2'
SIZE 3
OUTLINECOLOR 226 208 84
COLOR -1 -1 -1
END #STYLE
LABEL
ANTIALIAS TRUE
TYPE TRUETYPE
PRIORITY 5
FONT vera_sans
SIZE 8
ANTIALIAS TRUE
COLOR 113 53 57
OUTLINECOLOR 255 232 100
BUFFER 2
MINFEATURESIZE auto
PARTIALS FALSE
END #Label
END #class
END #layer
LOG FILE:
[Mon Jun 04 10:43:59 2012].247000 CGI Request 1 on process 780
[Mon Jun 04 10:43:59 2012].263000 msDrawMap(): Layer 0 (lakes), 0.000s
[Mon Jun 04 10:43:59 2012].294000 msDrawMap(): Layer 1 (Parks), 0.031s
[Mon Jun 04 10:43:59 2012].294000 msDrawMap(): Layer 2 (Ditches), 0.000s
[Mon Jun 04 10:43:59 2012].294000 msDrawMap(): Layer 3 (Townships), 0.000s
[Mon Jun 04 10:43:59 2012].294000 msDrawMap(): Layer 4 (CityLimits), 0.000s
[Mon Jun 04 10:43:59 2012].294000 msDrawMap(): Layer 5 (sections), 0.000s
[Mon Jun 04 10:43:59 2012].310000 msDrawMap(): Layer 6 (parcels), 0.016s
[Mon Jun 04 10:43:59 2012].310000 msDrawMap(): Layer 7 (roads), 0.000s
[Mon Jun 04 10:43:59 2012].310000 msDrawMap(): Layer 8 (roadsanno), 0.000s
[Mon Jun 04 10:43:59 2012].310000 msDrawMap(): Drawing Label Cache, 0.000s
[Mon Jun 04 10:43:59 2012].310000 msDrawMap() total time: 0.063s
[Mon Jun 04 10:43:59 2012].669000 msSaveImage() total time: 0.359s
[Mon Jun 04 10:43:59 2012].669000 mapserv request processing time (loadmap not incl.): 0.422s
[Mon Jun 04 10:43:59 2012].669000 msFreeMap(): freeing map at 01516108.
[Mon Jun 04 10:44:01 2012].138000 msCalculateScale(): General error message. Invalid image width or height.
[Mon Jun 04 10:44:01 2012].138000 msPrepareImage(): General error message. Image dimensions not specified.
[Mon Jun 04 10:44:01 2012].138000 msDrawMap(): Image handling error. Unable to initialize image.
[Mon Jun 04 10:44:01 2012].185000 msFreeMap(): freeing map at 01D4BBF8.
[Mon Jun 04 10:44:01 2012].325000 CGI Request 1 on process 7556
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 0 (lakes), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 1 (Parks), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 2 (Ditches), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 3 (Townships), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 4 (CityLimits), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 5 (sections), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 6 (parcels), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 7 (roads), 0.000s
[Mon Jun 04 10:44:01 2012].325000 msDrawMap(): Layer 8 (roadsanno), 0.000s
[Mon Jun 04 10:44:01 2012].341000 msDrawMap(): Drawing Label Cache, 0.016s
[Mon Jun 04 10:44:01 2012].341000 msDrawMap() total time: 0.016s
[Mon Jun 04 10:44:01 2012].341000 msSaveImage() total time: 0.000s
[Mon Jun 04 10:44:01 2012].341000 mapserv request processing time (loadmap not incl.): 0.016s
[Mon Jun 04 10:44:01 2012].341000 msFreeMap(): freeing map at 01516240.
Thanks for all the help
Mark Volz
GIS Specialist
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