Hi Kresh
Tiff World File (.tfw)
6 rows:
First row is x-pixel resolution (width in your coordinate system)
Second and third rows are so-called "rotational components" but are set to zero
in the case of an unrotated mapsheet.
The fourth row is the y-pixel resolution (dimension in coordiantes). The
negative sign indicates that the image y-axis is positive down which is the
opposite from real world coordinates.
The 5th and 6th rows are the Easting and Northing of the middle of the upper
left pixel
Robert
>>> "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> 3/11/2008 8:19 p.m. >>>
I have a map file with following MapExtent parameter:
EXTENT 106.335006 -6.896956 107.315811 -5.983994
Recently, I got a TIFF file without coordinates. I plan to use the TIFF file
with my map. Thus, I'm supposed to create a .TFW file using text editor, am I
correct?
Problem is: I'm not sure what parameter to be put in the .TFW file. Here is the
parameters I put in my TFW file so far:
1.000
0.000
0.000
-1.000
106.335006
-5.983994
And I failed to show the raster on my map.
Please note that I am merely guessing. It seems that the fifth and the sixth
like of the TFW should be the leftmost and rightmost number of my EXTENT
parameter, respectively, but I have no idea what the first four lines are for.
Based on EXTENT parameter above, what the correct .TFW values should be? Many
thanks,
-Kresh
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