. Although the site map image is uploaded, the XY coordinate system has not been defined for the map. You accomplish this by calibrating the site map.
Enter the known X- and Y-coordinates for two known points on opposite corners of the map; units are in inches.
Click
Next Step
.
Two yellow dots labeled
Lower Left
and
Upper Right
are displayed.
Drag the dots to the correct position on the map. For increased accuracy, you can zoom in/out using your mouse wheel or the
+
and
–
buttons on the map toolbar.
Notice the red bar at the top-right of the map window.
The calibration algorithm compares the aspect ratio of the map image with the aspect ratio of the coordinate system you are defining by entering two reference points. The aspect ratios should match if the map image and the two reference points are correct. The bar's color switches from red to green as you move the yellow calibration dots on the map, and the agreement of the aspect ratios is greater than 1%.
Click
Save
.
The map is now calibrated. Move the mouse over the map. The X- and Y-coordinates display in the bottom-right of the map window.
in the map window toolbar.
