[mapserver-users] help with raster

[Francois Michel Le Tourneau]

 Hello !
 I am trying to use raster data within mapserver, which does not work.
 I have atempted to use various version of mapserver, compiled
 with or without gdal support. My data is geotiff, with the following
 indications extracted by gdalinfo :

 Driver: GTiff/GeoTIFF
Size is 5441, 4851
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223562997]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433]]
Origin = (-65.030748,3.840657)
Pixel Size = (0.000400,-0.000400)
Corner Coordinates:
Upper Left  ( -65.0307480,   3.8406570) ( 65d 1'50.69"W,  3d50'26.37"N)
Lower Left  ( -65.0307480,   1.9002570) ( 65d 1'50.69"W,  1d54'0.93"N)
Upper Right ( -62.8543481,   3.8406570) ( 62d51'15.65"W,  3d50'26.37"N)
Lower Right ( -62.8543481,   1.9002570) ( 62d51'15.65"W,  1d54'0.93"N)
Center      ( -63.9425480,   2.8704570) ( 63d56'33.17"W,  2d52'13.65"N)
 My mapfile is the simplest ever :

NAME mymap
SIZE 500 500
EXTENT -65 2 -63 4
SHAPEPATH "data1"
SYMBOLSET marker.sym

WEB
TEMPLATE dessine_carte.html
EMPTY /cartes/empty.html
IMAGEPATH "/usr/local/httpd/htdocs/tmp/"
IMAGEURL "/tmp/"
LOG "/tmp/log.log"
END

LAYER
  NAME "Im"
  DATA "Landsat2.tif"
  TYPE RASTER
  STATUS ON
END
END # end of map file

In the log file, I can see :
Sat Feb 23 12:41:32 2002,22416,195.132.244.162,mymap,0,-65.498000 2.000000
-63 4.000000,-1.000000 -1.000000,,normal execution

The result is a blank image of 500x500 pixels.

I would like to know :
1. how to understand every statement of the log file 
2. how to test simply the raster capability of my mapserver
3. how i can understand what is going on with the raster
data for it not being displayed

 Thanks in advance for any answer
 François-Michel Le Tourneau

*********************************************************************** 
 Francois-Michel Le Tourneau
 Chargé de Recherches au CNRS
 Centre de Recherche et de Documentation sur l'Amérique Latine (UMR 7530)
 Tel. 01 44 39 86 85    Fax. 01 45 48 79 58 
 E-mail : Francois.Michel.Le.Tourneau at ens.fr
***********************************************************************