Stat > Regression > Poisson Regression > Contour Plot > Contours
Use to control the number and placement of contour levels. Specify the number or location of the contour levels, and the way Minitab displays the contours.
Contour Levels: Controls the number of contour levels to display.
Use defaults: Choose to have Minitab determine the number of contour lines (from 4 to 7) to draw.
Number: Choose to specify the number of contour lines, then enter an integer from 2 to 11 for the number of contour lines you want to draw.
Values: Choose to specify the values of the contour lines in the units of your data. Then specify from 2 to 11 contour level values.
Data Display:
Area: Check to shade the areas that represent the values for the response, which are called contours.
Contour lines: Check to draw lines along the contours.