Image SXM Help

NIH Image

Generates a density profile plot based on the current rectangular or line selection. For rectangular selections wider than they are tall (or if the option key is down), it produces a 'column average plot', where the width of the plot is equal to the width of the selection and each point in the plot represents the average gray value of the pixels in the corresponding column in the selection. For rectangular selections higher than they are wide, it does a top to bottom 'row average plot', where the width of the plot is equal to the height of the selection and each point in the plot is the average of the corresponding row. For line selections, it displays a plot of the gray values along the selected line. Pixel averaging is performed when using straight line selections and the line width is greater than one. For example, assuming the maximum line width is selected by clicking on the thickest line at the bottom of the tool palette, each data point plotted is the average of eight pixels. The Profile Plot Options command can be used to vary the way profile plots are displayed. Use the Copy command to copy both the profile plot (as a PICT) and the data values (as a single column of text) to the clipboard. Plot values can also be saved to a text file using the Export command.