Contents Previous Next Subchapters

Specifying Contour Levels
Syntax contour(matrixlevels)
See Also mesh, surface , and contour(matrix, levels, x, y)

Displays the contour plot specified by matrix and levels in the current viewport , where levels contains the values for each contour line and is an integer, real, or double-precision column vector. The line corresponding to the i-th element of levels is drawn using the i-th color in the current color sequence as returned by gcolor and the length of levels must be less than or equal to the number of colors.

If you enter
     x      = seq(8)
     y      = x'
     matrix = x * y
     levels = {10, 20, 30}
     contour(matrix, levels)
O-Matrix will generate the following plot: