I keep getting emails from novice users about how to calibrate raster maps. I have given some more instructions below.I hope this makes it little clearer. (Actually, you do not always need a calibrated raster image map; Movmap3D can also create autocalibrated road maps or elevation maps from shapefiles and SRTM data files.)

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If you are a complete novice, it is a bit tricky! It is called 2-point calibration.

1) First, download your map image from Google Earthor from other sources. North should be towards the top. If you have saved the image file in 'bmp'format, let us call this image file as 'yourmap.bmp'

2) Take two points on your map: one near the bottom-left and another near the top-right. Using Windows Paint program look up the pixel coordinates for these points: say, bot-left point = (nxSW, nySW) & top-right point = (nxNE,nyNE)

3) Next, using Google Earth program look up the longitude and latitude for these points. Say, bot-left point = (longSW, latSW) & top-right point = (longNE,latNE). Try to obtain this data with as many decimal places as possible.

4) Now, create a file called 'yourmap.ndx' using Windows Notepad editor. Enter the above two information (pixel coordinates and long/latitude data) in this 'ndx' in a single line according the following format:

nxSW, nySW, (+/-)longSW, (+/-)latSW, nxNE, nyNE, (+/-)longNE, (+/-)latNE

5) Save the this 'ndx' file. Copy the two files ('yourmap.bmp' and 'yourmap.ndx') to any directory in your PocketPC.

6) On your PocketPC, run the Movmap.exe program and load these two files ('yourmap.*') with the File-->Load menu.

That is all! If you have trouble, check the 'ndx' file for the worldmap in the first page of my website.