Linked Questions
16 questions linked to/from How to plot the contour of f[x,y]==0 if always f[x,y]>=0
41
votes
2
answers
3k
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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 ...
- 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
...
- 6,836
12
votes
4
answers
8k
views
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]
...
- 15k
4
votes
2
answers
86
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 ...
- 8,041
4
votes
1
answer
293
views
4
votes
1
answer
472
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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 $\...
- 27.7k
3
votes
1
answer
125
views
Plotting in for loop
I am having some problem while plotting the data being generated in for loop
My aim is to plot the result of for loop while it is solving the equation for each value of w,i.e. plot between w and x
...
- 91
2
votes
2
answers
328
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 ...
- 474
2
votes
1
answer
459
views
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}]
...
- 27.7k
2
votes
1
answer
443
views
Finding the zeros of a non linear complex function
I need to find the roots of a nonlinear function, namely:
...
- 695
1
vote
1
answer
223
views
Why Mathematica does strange thing with complex numbers [duplicate]
For example, compare the two commands below.
...
- 379
1
vote
2
answers
613
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:
<...
- 1,153
1
vote
0
answers
173
views
ContourPlot of implicit function doesn't work when I square the equation [duplicate]
When I try this
...
- 21