Histogram Tool    

The Histogram Tool generates a bar graph of a frequency distribution for the selected area.  Select the histogram tool and drag 'n' drop it onto the image viewer. The histogram will appear. The histogram output will be updated as you drag one of the eight smaller boxes located on the rectangle.  You can change the shape and size of the area being profiled, as well as rotate it by grabbing the small box in the middle and turning.

       


Right-click on the histogram box area to bring up the IPHistogramEntity edit box, as seen below. Selecting the Entity tab allows you to adjust the colors, thickness, handle size and visibility of the histogram marker.  You can also select a Coordinate System.  Make the necessary adjustments, click Apply and then Close. The values will be updated according to your selections.




Selecting the Rectangle tab allows you to enter specific values for the histogram rectangle used, including center X, Y, width, height, angle and aspect of width/height.  After entering your values, click Apply and then Close. The histogram will be recalculated according to the selections.