Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Group: Plot Manipulation
See also: contour3

Function: contour2
Description: contour2 computes lines and points for a contourplot of a three dimensional dataset at level c

Usage: {lt, pt} = contour2 (x, c)
Input:
x n x 3 matrix
c scalar
Output:
lt m1 x 2 line matrix
pt m2 x 2 point matrix

Note:

Example:

x = grid(-#(3,3), #(0.25,0.25), #(25,25))
f = exp(-0.5.*sum(x^2,2))./(2.*pi)
z = sort(x~f, #(1,2,3))
{lt,pt} = contour2(z, max(f)./2)
d = createdisplay(1,1)
show (d,1,1,pt)
Result:

You will see a circle corresponding to a contourline.

Group: Plot Manipulation
See also: contour3

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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