Compute and display the intensity distribution of the specified SIC variable, in logarithmic scale, and fit a Gaussian to the histogram of pixel intensities per channel. VarName must be the name of a 2-D or 3-D SIC image variable.
If no VarName is specified, the last displayed image (by SHOW or VIEW) is used. If none was ever displayed, SHOW selects among SKY, CLEAN and DIRTY images in this priority order. Variable SCALE (if non zero) is used to define the displayed intensity scale.
This command is equivalent to SHOW INTENSITY, but in addition it updates the VarName%rms value to indicate the computed noise in the data.