The histogram tool is designed to allow the program developer to plot and display data distributions anywhere within the software, without the need to have to write additional display software. Histograms are generated and filled using the "hbook" and "hfill" library functions (see Programmers Guilde).

The current histogram for display is manipulated by the and buttons. Each will find the next available histogram in the specified direction.

**factor**
Generate a Tv for dsplay.

**plot hist**
Display the current histogram if 1D. If a 2D scatter plot, form an image for
display in the **Imcalc Tool**.

**hist stats**

Print histogram information to the **tinaTool** dialog box.

**integrate hist**

Replace the current histogram with its integral (from the left).

**exp CDF**

Plot the histogram along with the cumulative distribution function for an exponential distribution.

**norm CDF**

Plot the histogram along with the cumulative distribution function for a Gaussian distribution.