How to add color spread bar on the RGB image?

Posted by Liu, Dongfang (NIH/NIAID) [F] on
URL: http://imagej.273.s1.nabble.com/Why-no-setCalibrationTable-for-the-Calibration-class-tp3700860p3700861.html

Dear All,

How to add the color spread bar on the RGB image? I want to show fluorescence intensity change in false colour scale!

Best regards,
Don