I have successfully gridded my data; however, my color-filled contour map shows no contour lines. What is wrong?
A. Check to see if at least one of the contours is within the range of your gridded data. For example, a contour map will appear blank if there are contours of 0 and 100 while the gridded data ranged from 20 to 80. You can also create an additional contour (such as 50 in this example) with the same color as the level below it (0 in this example).