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6
votes
1answer
88 views

Can't plot rotated region

I was experimenting with the code from this question when I ran into another problem with regions. ...
0
votes
1answer
48 views

Why does one Monitor expression work while another fails?

I have a (somewhat involved) function f[x?NumericQ, y?NumericQ] and for some reason it behaves differently when given a Table ...
1
vote
0answers
45 views

Smooth out contour in RegionPlot/ContourPlot

I would like to smooth out the jagged edges in the outermost contours in the following plot: I have data of values as a function of variables (x,y) in the form ...
3
votes
1answer
81 views

RegionPlot3D and Texture

I'm getting a white solid instead of a solid with texture, I'm not sure what is wrong: ...
0
votes
1answer
72 views

RegionPlot not working as expected

I was trying to evaluate the following expression: RegionPlot[a > 0 && 2 a + b == 0, {a, -2, 2}, {b, -1.5, 1}, PlotLegends -> "Expressions"] ...
1
vote
1answer
89 views

Revert y-axis in RegionPlot

I have the following code: ...
3
votes
1answer
111 views

Little triangles appearing in a Mathematica region plot with “opacity” saved in a PDF file [duplicate]

I am trying to produce a region plot of many functions, but Mathematica keeps showing me the little triangles when I save it as pdf. I have seen other solutions which fix the problem with PlotStyle-> ...
2
votes
2answers
201 views

region plot in a 2-simplex

I want to plot a 2-dimensional region with constraint $x+y\le N$, i.e., I want to plot a sub-region inside a 2-simplex. As an example: ...
1
vote
1answer
74 views

RegionPlot of a Double integration [closed]

Hey guys I have a problem where I want to sketch the region of integration: Integrate[x Cos[y^2], {x, 0, 3}, {y, x^2, 9}] I know I have to use ...
3
votes
1answer
177 views

Put random points into a specific 2D subregion

I want to cover a particular subregion of the x-y plane with a random distribution. As this particular region is not a circle I encounter some problems declaring the permitted zone where to put ...
2
votes
0answers
122 views

Improve the clarity of a graphic [closed]

I want to use Mathematica to plot two 3D plots which delimit different regions of the space, and I want to show the differences between the region they delimit. These regions are: $z \geq cte /(4 x + ...
1
vote
1answer
99 views

How one can make the boundary of the regionplot smaller or bigger?

Suppose we have a regionplot as follows: ...
0
votes
0answers
46 views

RegionPlot giving an “invalid comparison” error

I am trying to use RegionPlot in Mathematica and I am stuck because I am getting an invalid comparison error. I am trying to evaluate the following code: ...
2
votes
1answer
169 views

Making a rectangular label for RegionPlot

I have a plot that includes a Region Plot. I want to make a rectangle with the same shading as in the region plot to show as a legend. The dumb way I can think off ...
2
votes
1answer
146 views

project from a n-dimensional space to 2-dim

let's say that I have a sphere in $N$-dimensions $$x_1^2+x_2^2+...+x_N^2=R$$ If I want to know the projection on the $x_1-x_2$ plane in this case I can figure out myself that is a circle, but how ...
0
votes
1answer
128 views

How to use ParametricPlot Wih Conditions (or similar)

I´m analizyng the game "Battle of the Buddies" similar to "Prisioner´s Dilenma" All works fine, BUT... I want to draw in red the point whose coordinates are less than the coords of a strategy. ...
2
votes
2answers
160 views

Plotting double inequality only for integer values

RegionPlot is plotting for all values. And using ListPlot I can only evaluate one inequality. How can I plot this type of ...
1
vote
1answer
116 views

How to force the RegionPlot to shade a narrow region?

I have an interactive demonstration, which (very simplified to leave out unnecessary details) looks as follows: ...