Help needed in Raster/World file

[raffle peter]

Hi
     Ed
          I changed the status from On to Default but still its not working. One thing i want to tell you that if i delete the .tfw file the output of gdalinfo also changed which like this--->
   
    #gdalinfo test.tif  ### Without test.tfw file  ######
  Driver: Gtiff/GeoTiff
  Size is 1042, 722
  Co-ordinate System is `'
  METADATA
  ----------
  ----------
  Upper Left (0.0, 0.0)
  Lower left (0.0, 722.0)
  Upper right (1042.0, 0.0)
  center(521.0, 361.0)
   
  Band 1 Block=1024*64 TYPE=BYTE, ColorInterp=RED
  ..........................................................................=Green
  ......................................................................=BLUE
   
  Then what will be my values in my .tfw file? Now if i put the values in my .tfw file then the output of my gdalinfo also changed according to the values that i put there.
   
  Where is the problem? Whether i need to put Projection statement in my mapfile?
  Please help me 
  Thanks in advance
  Raffle

Ed McNierney <ed at topozone.com> wrote:
      Raffle -
   
  If you set your LAYER to STATUS ON it won't display - you need to set it to STATUS DEFAULT.
   
       - Ed
    Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
Phone: +1 (978) 251-4242
Fax: +1 (978) 251-1396
ed at topozone.com 


    
---------------------------------
  From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of raffle peter
Sent: Monday, May 08, 2006 7:12 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Help needed in Raster/World file


  
  Hi
      I have given the mapfile below and after modifying the value as you suggested in
  your previous, I am not getting the raster image on my final output.
   
  Thanks in advance
  Raffle
   
     
  NAME "Europe"
  SIZE 200 200
  STATUS ON
  SYMBOLSET ....."
  EXTENT 2700051.860 2462746.020 3582564.801 3012459.468
  UNITS METERS
  SHAPEPATH " "
  
  WEB
  IMAGEPATH ""
  IMAGEURL ""
  END
  .......
  LAYER
  DATA "/usr/local/apache/htdocs/gmap/htdocs/data/europe.tif"
  NAME "raster_back"
  TYPE RASTER
  STATUS ON 
  END
  
  END

   
  Raffle -
   
  Zero is a perfectly nice number!  There's nothing wrong with 0.0 in your world file, especially in the second and third lines.  For the vast majority of raster images you will find that the fourth line is the same as the first line with the sign reversed, and the second and third lines are 0.0.  A world file will often look like:
   
  100.0
  0.0
  0.0
  -100.0
  12345.67
  987654.32
   
      - Ed
    Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
Phone: +1 (978) 251-4242
Fax: +1 (978) 251-1396
ed at topozone.com 


    
---------------------------------
  From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of raffle peter
Sent: Saturday, May 06, 2006 9:07 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Help needed in Raster/World file


  
   
   Hi
       I am trying to include a .tif file for raster background. For that i have to write a .tfw(world file) for the corresponding .tif file. The information that i need to put in the world file are X, Y Pixel size, rotational co-efficient and X, Y location of the center of the top left pixel. I am trying to find these values by using gdalinfo-- but some values are 0.0
  in their corresponding field.
     Can anyone plz help me, how to get/set these values for the world file so that i can
  keep my raster data georeferenced with other layers in my mapfile.
   
  Thanks in advance
  Raffle
     
    
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