Sponsored links: Algebra eBooks
 

Help Index

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

The Maxima on-line user's manual

Algebra Calculator

Search:

Contour_plot Calculator

Contour_plot

Function: contour_plot (<expr>, <x_range>, <y_range>, <options>, ...) It plots the contours (curves of equal value) of <expr> over the region <x_range> by <y_range>. Any additional arguments are treated the same as in plot3d.

contour_plot(F*C,[F,0,10],[C,0,100]);

This function only works when the plot format is either gnuplot or gnuplot_pipes. The additional package implicit_plot can also be used to plot contours and it works for any format. See implicit_plot.

Examples:

          (%i1) contour_plot (x^2 + y^2, [x, -4, 4], [y, -4, 4])$

          (%i1) F(x, y) := x^3 + y^2;
                                             3    2
          (%o1)                  F(x, y) := x  + y
          (%i2) contour_plot (F, [u, -4, 4], [v, -4, 4])$

You can add any options accepted by plot3d; for instance, the option legend with a value of false, to remove the legend. Gnuplot chooses, by default, 3 contours to show. to increase the number of levels, it is necessary to specify a custom gnuplot preamble:

          (%i1) contour_plot (u^3 + v^2, [u, -4, 4], [v, -4, 4],
          (%i2) [legend,false], [gnuplot_preamble,"set cntrparam levels 12"])$

(%o1)                                true
(%i2) 

Contour_plot Example

Related Examples

contour_plot-plot3d
plot3d (x^3/(%e^(a*x)), [x,0,50], [a,0.1,0.5],[gnuplot_preamble, "set cntrparam levels 20"]);

plot3d (x^3/(%e^(a*x)...

contour_plot (x^3/(%e...

Calculate

contour_plot-log
contour_plot((1/x)*log(y),[x,1,50],[y,1,50]);

contour_plot((1/x)*lo...

Calculate

contour_plot

? contour_plot;

Calculate

contour_plot
contour_plot (x^2 + y^2, [x, -5, 5], [y, -5, 5]);

contour_plot (x^2 + y...

Calculate

contour_plot
contour_plot (2*x^2 + 3*y^2, [x, -4, 4], [y, -4, 4]);

contour_plot (2*x^2 +...

Calculate

contour_plot
contour_plot(x^4+2*x^2*y^2+y^4-x^2-4*x*y-y^2+1, [x, -5,5],[y,-5,5]);

contour_plot(x^4+2*x^...

Calculate

contour_plot
contour_plot(100*0.5^((AngularVelocity/TrackingSpeed*400/400)^2),[AngularVelocity,0.0,1.0],[TrackingSpeed,0.0,1.0],[legend,"%"],[grid,100,100],[color,red,yellow,green],[gnuplot_preamble, "set cntrparam levels 20"]);

contour_plot(100*0.5^...

Calculate

contour_plot-plot3d
plot3d (x^3/(%e^(a*x)), [x,0,50], [a,0.1,0.5],[gnuplot_preamble, "set cntrparam levels 20"]);

plot3d (x^3/(%e^(a*x)...

contour_plot (x^3/(%e...

Calculate

contour_plot-exp-set_plot_option
contour_plot(-x*y/exp(x^2+y^2),[x,-2,2],[y,-2,2]);

contour_plot(-x*y/exp...

set_plot_option([gnup...

Calculate