[mapserver-users] Raster

[trussell at mtcsc.com]

Hi,

I noticed that IE's png viewer is quite a processor hog and would like to
find an alternative for that reason. Are you sure your lag time is on the
server side?

Tom

----- Original Message -----
From: "Miroslav Sodja" <Miroslav.Sodja at gov.si>
To: <mapserver-users at lists.gis.umn.edu>
Sent: Monday, February 04, 2002 1:25 AM
Subject: [mapserver-users] Raster


> Hi all,
>
> I have questions about raster data.
>
> Layer with raster data has 38 images; images are about 4500 pixel width,
> and 6000 pixel height with 2 colors. I have tile index of those images.
> The problem is that every image has border with no data. And that border
> goes across the data of neighbor image. The image should be transparent.
> There is no problem if I have png file format with transparent
> background and map file look like that
>
> LAYER  #raster 50.000
> NAME "IME_50"
> TILEINDEX "raster/ko_50.shp"
> TILEITEM "PNG_NAME"
> TYPE raster
> STATUS ON
> MAXSCALE 60000
> CLASSITEM "[pixel]"
> CLASS
> EXPRESSION ([pixel] <1 )
> COLOR 0 0 0
> END
> END
>
> But response of IIS and MapServer in that case is very slow.
>
> If I have tiff file format of those images I have white space around
> every image in layer but response of IIS and MapServer is fast. Map file
> is the same except:
>
> TILEITEM "TIF_NAME"
>
> I can't cut border with no data because images are deformed and new
> world file would be difficult to calculate.
>
> I have MapServer:
>
> MapServer version 3.5 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
> SUPPORTS=PROJ SUPPORTS=TTF SUPPORTS=WMS_SERVER INPUT=EPPL7 INPUT=OGR
> INPUT=GDAL INPUT=SHAPEFILE
>
> and IIS 5.0 on Windows 2000.
>
> Thanks for any suggestions.
>
>
> Miro Sodja miroslav.sodja at gov.si
>
>
>
>