[mapserver-users] Problem with rasters and world files
James Anderson
james@danisat.net
Thu, 10 Oct 2002 14:30:12 +0200
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Hi,
I am a Mapserver newbie. Please Help !!
I am trying to display a raster image of Harare. The raster file name =
is Harare.tif It is 8bit uncompressed. 13258x14646 pixels. I have =
made a world file called Harare.wld They are in the C:\Rasters =
directory
The world file looks like this:
13258
0.0000000000
0.0000000000
-14646
30.873957
-17.680917
The top left corner of the image is at 30.873957 X and -17.680917 Y
I have made a map file Harare.map that looks like this:
NAME EX1
EXTENT -18.170 -35.000 54.531 38.020
SIZE 400 400
SHAPEPATH "C:\Rasters"
PROJECTION
"proj=3Dlonglat"=20
"ellps=3DWGS84"=20
"datum=3DWGS84"
"no_defs"
END
IMAGECOLOR 18 23 89
LAYER
NAME "Harare"
DATA "Harare.tif"
TYPE RASTER
STATUS ON
END
END # end of map file
And an html file default.html that looks like this:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>Harare Map</title>
</head>
<body bgcolor=3D"#ffffff">
<img border=3D"1" =
src=3D"/cgi-bin/mapserv.exe?map=3DC:\Inetpub\wwwroot\map3\Harare.map&mode=
=3Dmap"></p>
</body>
</html>
Now I am not sure what I am doing wrong. The mapserver outputs a dark =
blue image, same color as the imagecolor statement in the mapfile. This =
means that the mapserver is working and that my file permissions are ok. =
I am running under WinXP with IIS5.1 You can see my image at =
http://www.thebeastie.net/map3/
I think that either the extent in the mapfile is wrong or I have the =
world file wrong. I am not sure which. The example of how to make =
world files is not very clear. =20
Can anyone help ?
Thanks,
James.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2719.2200" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am a Mapserver newbie. Please =
Help=20
!!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am trying to display a raster =
image of=20
Harare. The raster file name is Harare.tif It is 8bit=20
uncompressed. 13258x14646 pixels. I have =
made a=20
world file called Harare.wld They are in the C:\Rasters=20
directory</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The world file </FONT><FONT =
face=3DArial=20
size=3D2>looks like this:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial=20
size=3D2>13258<BR>0.0000000000<BR>0.0000000000<BR>-14646<BR>30.873957<BR>=
</FONT><FONT=20
face=3DArial size=3D2>-17.680917</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>The top left corner of the image is at =
30.873957 X=20
and -17.680917 Y</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I have made a map file Harare.map =
that looks=20
like this:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>NAME EX1<BR>EXTENT -18.170 -35.000 =
54.531=20
38.020<BR>SIZE 400 400<BR>SHAPEPATH=20
"C:\Rasters"<BR>PROJECTION<BR> "proj=3Dlonglat"=20
<BR> "ellps=3DWGS84" <BR> =20
"datum=3DWGS84"<BR> "no_defs"<BR>END<BR>IMAGECOLOR 18 =
23=20
89</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>LAYER<BR> NAME "Harare"<BR> =
DATA=20
"Harare.tif"<BR> TYPE RASTER<BR> STATUS =
ON<BR>END</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>END # end of map file<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>And an html file default.html =
that looks like=20
this:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><!DOCTYPE HTML PUBLIC "-//IETF//DTD=20
HTML//EN"><BR><html><BR> <head><BR> <ti=
tle>Harare=20
Map</title><BR> </head><BR> <body=20
bgcolor=3D"#ffffff"><BR> <img border=3D"1"=20
src=3D"/cgi-bin/mapserv.exe?map=3DC:\Inetpub\wwwroot\map3\Harare.map&=
mode=3Dmap"></p><BR> </body><BR></html><BR></FO=
NT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial =
size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Now I am not sure what I am doing =
wrong. The=20
mapserver outputs a dark blue image, same color as the imagecolor =
statement in=20
the mapfile. This means that the mapserver is working and that my =
file=20
permissions are ok. I am running under WinXP with =
IIS5.1 You=20
can see my image at <A=20
href=3D"http://www.thebeastie.net/map3/">http://www.thebeastie.net/map3/<=
/A></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I think =
that either the extent in=20
the mapfile is wrong or I have the world file wrong. I am not sure =
which. The example of how to make world files is not very =
clear. =20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Can anyone help ?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>James.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2> </DIV></FONT></BODY></HTML>
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