[Mapserver-users] Newbie Question about rasters

[Ed McNierney]

Paul -

(btw, please always reply to the full list, so everyone hears the
answers)

You don't see TIFF or JPG input, and that's good, actually, because
you're using GDAL input which will have JPEG support built in.  If the
previous suggestion for an absolute path doesn't fix it, try copying the
ak.jgw file to ak.wld.  Although the GDAL docs say it supports both, I
thought that only .wld was supported (could be old news - I haven't used
JPEGs in MapServer in a few years).

	- Ed

Ed McNierney
President and Chief Mapmaker
TopoZone.com
-----Original Message-----
From: Paul VanDyke [mailto:pvandyke at kib.co.kodiak.ak.us] 
Sent: Friday, March 26, 2004 6:57 PM
To: Ed McNierney
Subject: RE: [Mapserver-users] Newbie Question about rasters

I've got a lot of other raster files, this .jpg file just happened to be
the last one I tried.  However, I DO appreciate your knowledge.

Here is the output from the "mapserv -v" command:

MapServer version 4.0.1 OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP OUTPUT=PDF
OUTPUT=SWF  SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER
SUPPORTS=WMS_CLIENT SUPPORT S=WFS_SERVER SUPPORTS=WFS_CLIENT INPUT=EPPL7
INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

I don't know a lot about the world files but in the raster directory, I
have ak.aux, ak.jgw, ak.jpg, ak.rrd

I'm a little suspect in the output of mapserv -v.  It doesn't talk about
raster or tiff or jpg inputs...  Hmmm... 

By the way, this is running on Window 2000 w/ Apache 2.0 web server.

-----Original Message-----
From: Ed McNierney [mailto:ed at topozone.com]
Sent: Friday, March 26, 2004 2:29 PM
To: Paul VanDyke; mapserver-users at lists.gis.umn.edu
Subject: RE: [Mapserver-users] Newbie Question about rasters


Paul -

JPEG is a very poor format type to use for geospatial data, mainly due
to performance issues (you need to read and decode the entire image just
to get the value of one pixel).  It seems likely that MapServer is not
reading georeference information for your JPEG, while ArcGIS is.

What do you get when you run "mapserv -v" from the command line?

What is the filename of the georeference "world" file?  It will be
raster/ak.something

	- Ed

Ed McNierney
President and Chief Mapmaker
TopoZone.com