Linked Questions

1
vote
0answers
147 views

ContourPlot of implicit function doesn't work when I square the equation [duplicate]

When I try this ...
0
votes
0answers
44 views

Bug in Contour Plot [duplicate]

I think the following are bugs: ContourPlot[y (x - 1)^2 == 0, {x, 0, 2}, {y, -2, 10}] ...
37
votes
2answers
2k views

Specific initial sample points for 3D plots

PlotPoints lets you determine how many sample points you want in each direction, but sometimes I want specific ones. For Plot ...
14
votes
5answers
1k views

What is my problem with MeshFunction?

I want plot the max value in a sine plot. We can use the following code ...
11
votes
4answers
5k views

Problem with ContourPlot

I tried these ...
4
votes
2answers
290 views

A particular contour does not show up, even though it is in my list [duplicate]

Consider: f = Sqrt[9 - x^2 - y^2]; ContourPlot[f, {x, -4, 4}, {y, -4, 4}, Contours -> {0, 1, 2, 3}, ContourLabels -> All, ContourShading -> None] ...
2
votes
1answer
1k views

ContourPlot shows only part of the contours [duplicate]

Consider these contour plots: f[x_,y_]:=Cos[x] + Cos[y] ContourPlot[f[x, y] == 0, {x, 0, 4 Pi}, {y, 0, 4 Pi}] ...
4
votes
1answer
398 views

How to plot the contour of the radius part of a complex function

Suppose we have a complex function $f(x,y)$, in which x and y are real variables. In theory we can write the function into the polar form $$ f(x,y)=r(x,y)e^{i\theta(xy)} $$ where $r(x,y)$ and $\...
1
vote
2answers
517 views

How can I get an approximate contour plot from a 3D plot?

I have some larger square, Hermitian matrices, M, (dimension 20, say, much more than 4) with 2 independent variables, call them x and y. I can plot the eigenvalues as functions of x and y with: <...
2
votes
1answer
305 views

ContourPlot, problem with mesh

I have to plot this trigonometric function: ...
4
votes
1answer
225 views

One Mesh Line does not show up in ContourPlot

Consider: ...
2
votes
2answers
152 views

How to plot this equation for $x,y$?

(1 + r^2 + x)^2 - (-1 + r)^2 ((1 + x)^2 + y^2)=0 2 (2 r^3 + (1 + x)^2 + y^2 - r (-1 + x^2 + y^2))=0 I am trying to plot $x$ and $y$ which are giving by the ...
2
votes
1answer
173 views

Finding the zeros of a non linear complex function

I need to find the roots of a nonlinear function, namely: ...