EXPRESSION ([Bev_class]=1)

[Michael Schulz]

Hi,

the error "failed to draw layer..." seems to be more an access problem 
to the shapefile not a problem of the mapfile configuration. You don't 
get the error with the absolute path, so maybe your classification is 
not working, that's why nothing is drawn. Did you try without an 
expression and does the layer show up then? Perhaps you should omit the 
min/maxscale settings also, just in case...

HTH, Michael


Leopold Schefcik (MULTIMEDIAPLAN.AT) schrieb:
> 
> Hi, I'd like to show a layer (polygones) with the population density in 5
> clases
> (in different colors).
> 
> I made the map file like in centrope_wms_bevdichte_2.map in the attachement
> is shown. e.g. with this:
> 
>  	CLASS							# Low Density
> 		MAXSCALE 120000
> 		MINSCALE 500
> 		EXPRESSION ([Bev_class]=1)  #if it is a string ('[FIELD]'='value')
> 		SYMBOL 1
> 		COLOR 248 147 147
> 		SIZE 1
> 	END
> 
> 	CLASS							# High Density
> 		MAXSCALE 120000
> 		MINSCALE 500
> 		EXPRESSION ([Bev_class]=2)
> 		SYMBOL 1
> 		COLOR 249 36 36
> 		SIZE 1
> 	END
> 
> But I only get this message (when I am using a relativ SHAPEPATH):
> 	msDrawMap():Failed to draw layer named `Bev_Density'.
> or no message and no layer with an absolute SHAPEPATH.
> 
> 
> Someone has an idea about this?
> 
> Best regarts
> Leopold
> 
> 
> 
> CapabilitiesRequest:
> http://213.47.127.15:8081/cgi-bin/mapserv.exe?MAP=/ms4w/apps/maplab-2.2/tuto
> rial/centrope_wms_bevdichte_2.map&SERVICE=wms&VERSION=1.1.1&REQUEST=GetCapab
> ilities
> 
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]Im
> Auftrag von Michael Schulz
> Gesendet: Dienstag, 30. August 2005 13:40
> An: MAPSERVER-USERS at LISTS.UMN.EDU
> Betreff: Re: [UMN_MAPSERVER-USERS] 3 little Questions
> 
> 
> Hi Leopold,
> 
> Q1: you will need to use a style that uses a vector symbol, e.g.
> 
> SYMBOL
>    NAME "circle"
>    TYPE ellipse
>    FILLED true
>    POINTS
>      1 1
>    END
> END
> 
> then you can use the SIZE parameter in the mapfile on that symbol.
> 
> Q2: Are you sre mapserver finds your shapefile in ./data? Did you try to
> use an absolute path to your data directory?
> 
> Q3: Not sure, but did you try using a 24-bit output format, e.g. png24 ?
> 
> Cheers, Michael
> 
> 
> 
> Leopold Schefcik (MULTIMEDIAPLAN.AT) schrieb:
> 
>>Hi list,
>>
>>Question 1 (of 3):
>>maybe a simple question: How in general can I change the width of a
>>line(vectordata)?
>>
>>Maybe not with 'SIZE' because regardless of which SIZE 1 or SIZE 50 or
> 
> SIZE
> 
>>100 there is allways a fine line.
>>
>>CLASS
>>      NAME "XC_Rivers"
>>      STYLE
>>        SYMBOL 0
>>        COLOR 72 0 254
>>        SIZE 100
>>        MINSIZE 1
>>        MAXSIZE 100
>>      END
>>    END
>>
>>---------------------------------------
>>Question 2 (of 3):
>>I'd like to show a layer (polygones) with the population density in 5
> 
> clases
> 
>>(in different colors).
>>
>>I made the map file like in centrope_wms_bevdichte_2.map in the
> 
> attachement
> 
>>is shown. e.g. with this:
>>
>>CLASS							# Low Density
>>			MAXSCALE 120000
>>			MINSCALE 500
>>			EXPRESSION ([Bev_class]=1)  #if it is a string ('[FIELD]'='value')
>>			SYMBOL 1
>>			COLOR 248 147 147
>>			SIZE 1
>>		END
>>
>>		CLASS							# High Density
>>			MAXSCALE 120000
>>			MINSCALE 500
>>			EXPRESSION ([Bev_class]=2)
>>			SYMBOL 1
>>			COLOR 249 36 36
>>			SIZE 1
>>		END
>>
>>But I only get this message:
>>	msDrawMap():Failed to draw layer named `Bev_Density'.
>>
>>Someone has an idea about this?
>>--------------------------------------------
>>
>>Question 3 (of 3):
>>I have a satellite tif for my background. It is in color. But in my client
>>it is only shown in black and white.
>>
>>Do I have to change some command line here?
>>(map file for satellite picture is also in attachement:
>>centrope_wms_sat.map)
>>
>>---------------------------------------------
>>
>>Thanks a lot for everybody, who is trying to help me here a little bit.
>>
>>Best regards,
>>Leopold
>>
>>
>>
>>
> 
> 
> 
> --
> -----------------------------------------------------------
> Michael Schulz                            mschulz at webgis.de
> 
> in medias res  Gesellschaft für Informationstechnologie mbH
> 
> In den Weihermatten 66              Tel +49 (0)761 556959-5
> 79108 Freiburg                      Fax +49 (0)761 556959-6
> 
>                 www.webgis.de / www.zopecms.de
> -----------------------------------------------------------
> NEU ++ UMN MapServer Hosting ++ http://www.webgis.de ++ NEU
> -----------------------------------------------------------


-- 
-----------------------------------------------------------
Michael Schulz                            mschulz at webgis.de

in medias res  Gesellschaft für Informationstechnologie mbH

In den Weihermatten 66              Tel +49 (0)761 556959-5
79108 Freiburg                      Fax +49 (0)761 556959-6

                www.webgis.de / www.zopecms.de
-----------------------------------------------------------
NEU ++ UMN MapServer Hosting ++ http://www.webgis.de ++ NEU
-----------------------------------------------------------