If you don't, it won't readily produce its power for you. Using the field of buttons displayed in Figure 7, you may reexpress data by squaring it, taking its square root, its logarithm, and its inverse or inverse square root. Changing from one to another or back to the raw data is as simple as pushing the button. This is very nice. Reexpressing Data Other Features Adding Color is easy.
Color is added variable by variable.
This colorization is rather fancy though. Of course, each variable ranges from lower to higher values. The colors for the variable also change, in five colors, from blue to red, as with a rainbow. If you don't want it on, press clear. If you want another variable colored, press that button.