A line profile is a plot of intensity values for pixels along a straight line. Two types of line profile tools are available:
Line Profile displays a plot of intensity values for pixels in a row or column of the Image window. This profile is overlain on the image. You can view a profile of a line of pixels or a band of pixels. This data can be saved as a text file.
Arbitrary Profile displays a plot of intensity values along a line segment that is oriented at any angle in the Image window. This profile displayed in a separate window. You can interactively change the orientation of the line. This data can be saved in a .slk spreadsheet compatible file.