This tutorial assumes that you have already
imported your image into Idrisi and
that you have already started the Idrisi software. The
working directory must be the directory where your imported image resides.
To display the image you can:
Choose Display Launcher off the file menu
Press F5 key
Press the display button
The following screen should appear:
Under "Name of file to display:" either type in
the file name you gave your imported image or double-click on the white box.
When you double-click on the box you should get a list of all the files in the
working directory. In the list double-click on the file you imported.
For "Palette options:" type in bw256 in the
white box under User Defined: or double-click on the white box. If you
double-click on the white box, double-click on bw256 in the list of palettes.
Click on OK.
The following screen should appear with your
image on the inside:
The composer window allows you to change
different aspects of your image display but is not important for the purposes of
this work. If you want to zoom this image there are two methods:
The first is to click on the magnification key
along the top of the window . This
will change your cursor to an magnifying glass when its over the the image. If
you left click it will zoom in on the image, if you right click it will zoom out
on the image.
The other is to click on the window key along the
top of the window . This will change
your cursor to a crosshair whenever its over the image. If you left click and
drag a white box will appear. When you release the left key Idrisi will zoom to
whatever is in the box. If you right click it sets the magnification to the
original display.
Reading Coordinates
Whenever you place the cursor over the image
cooridinate information is displayed along the status bar at the bottom of the
screen (shown in the red box).
The "c:" tells you the column number of the
pixel the cursor is over and "r:" tells you the row. The "x:"
and "y:" correspond to column and row but they allow you to read
coordinates in portions of a pixel. For
georeferencing, the x and the y coordinates of the point you want would
correspond to originalX and originalY.
Last modified: Tuesday, 26-Aug-2008 13:11:05 EDT
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