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 ...
• 16.6k
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
8k views

### Problem with ContourPlot

I tried these ...
• 143
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
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
293 views

Consider: ...
• 15k
472 views

• 474
459 views

### ContourPlot, problem with mesh

I have to plot this trigonometric function: ...
• 65
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
443 views

### Finding the zeros of a non linear complex function

I need to find the roots of a nonlinear function, namely: ...
1 vote
223 views

### Why Mathematica does strange thing with complex numbers [duplicate]

For example, compare the two commands below. ...
• 379
1 vote
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