Linked Questions

1 vote
1 answer
189 views

Why Mathematica does strange thing with complex numbers [duplicate]

For example, compare the two commands below. ...
Apocalypse's user avatar
1 vote
0 answers
173 views

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

When I try this ...
Knightq's user avatar
  • 21
0 votes
0 answers
59 views

Bug in Contour Plot [duplicate]

I think the following are bugs: ContourPlot[y (x - 1)^2 == 0, {x, 0, 2}, {y, -2, 10}] ...
AJHC's user avatar
  • 369
41 votes
2 answers
3k 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 ...
ssch's user avatar
  • 16.6k
14 votes
5 answers
2k views

What is my problem with MeshFunction?

I want plot the max value in a sine plot. We can use the following code ...
partida's user avatar
  • 6,826
12 votes
4 answers
8k views

Problem with ContourPlot

I tried these ...
user6932's user avatar
  • 143
4 votes
2 answers
405 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] ...
David's user avatar
  • 14.9k
2 votes
1 answer
2k 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}] ...
xslittlegrass's user avatar
2 votes
2 answers
302 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 ...
MrDi's user avatar
  • 474
4 votes
1 answer
471 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 $\...
xslittlegrass's user avatar
2 votes
1 answer
455 views

ContourPlot, problem with mesh

I have to plot this trigonometric function: ...
diana's user avatar
  • 65
4 votes
1 answer
289 views

One Mesh Line does not show up in ContourPlot

Consider: ...
David's user avatar
  • 14.9k
1 vote
2 answers
604 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: <...
Steve's user avatar
  • 1,153
4 votes
2 answers
85 views

Placing a contour line at y when f(x)>=y

I have an issue that the plot below drops the contour at 0. I suspect this case is special because my function is lower bounded by 0. As a work-around, I changed 0 to 0.01, but it looks jagged, any ...
Yaroslav Bulatov's user avatar
2 votes
1 answer
433 views

Finding the zeros of a non linear complex function

I need to find the roots of a nonlinear function, namely: ...
Herr Schrödinger's user avatar

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