STATUS in LAYER object

Gerry Creager gerry.creager at TAMU.EDU
Thu Sep 8 18:41:31 EDT 2005


Following on the heels of this note, might we consider a change to the 
STATUS flag in layers, changing 'ON' to something else, such as 
'SELECTABLE'?

Gerry

Gregory Yetman wrote:
> Hi,
> 
> I'm new to both mapserver and the list, hopefully this question isn't
> too 'newbie'.
> 
> I have a map file that works fine:
> 
> MAP
>  IMAGETYPE      JPEG
>  EXTENT        -180 -90 180 0
>  SIZE           320 320
>  SHAPEPATH      "data"
>  PROJECTION
>    "proj=latlong"
>    "ellps=WGS84"
>  END
> 
>  LAYER # sample jpeg LDEO layer
>      NAME         relief
>      STATUS       DEFAULT
>      TYPE         RASTER
>      TileIndex    'i_512/i_512.shp'
>      TileItem "Location"
> 
>      PROJECTION
>          "proj=merc"
>          "ellps=WGS84"
>       END
>   END # Raster layer ends here
> END # end of map file
> 
> However, if I change STATUS from DEFAULT to ON the layer does not
> appear, the image produced is empty. According to the manual (definition
> below), ON is what should be used in 'normal use'. So is something wrong
> with my map file or is there an issue with the use of STATUS?
> 
> Thanks,
> 
> Greg
> 
> STATUS [on|off|default]
> 
>    Sets the current status of the layer. Often modified by MapServer
>    itself. Default turns the layer on permanently.
> 
>    Some notes regarding the STATUS values:
> 
>        *
> 
>          In CGI mode, layers with STATUS DEFAULT cannot be turned off
>          using normal mechanisms. It is recommended to set layers to
>          STATUS DEFAULT while debugging a problem, but set them back to
>          ON/OFF in normal use.
> 
>        *
> 
>          For WMS, layers in the server mapfile with STATUS DEFAULT are
>          always sent to the client.
> 
> 
> -- 
> --------------------------------------------------------------------
> Gregory Yetman
> Center for International Earth Science Information Network (CIESIN)
> Columbia University
> URL: http://www.ciesin.columbia.edu/
> e-mail: gyetman (at) ciesin.columbia.edu
> tel: (845) 365-8982
> --------------------------------------------------------------------

-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
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