How does the Range setting interact with the color pbar scale?
Range is set on the Define Function control panel, at the bottom right. By default, the autoRange value is used, which is calculated from the Func overlay brick. You can set the Range value to anything you want, though, by toggling autoRange off and typing your desired value into the widget below. The value of 1 on the color pbar corresponds to the Range setting. For example, if the Func is % Change, and Range is set to 5, then the pbar values are % Change relative to 5. That is, pbar=0.4 corresponds to % Change=2. Note that you can change the top value on the pbar by using the hidden menu that pops up when you right-click (mouse button 3) on the Inten label at the top of the pbar. However, the Range value always maps to pbar=1.0, so if you set Range=1 and pbar top=5, then you will have the same effect as pbar top=1 and Range=5. See the file README.setup for more information about this popup menu. The Range control is original to the earliest AFNI, but the ability to control the pbar s
