# All Questions

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### Manipulate a plot with display of a condition

This is a how to question --- the example is without importance. I want to manipulate the plot of say a x^2 + b y^2 for (a,b) belonging to a specific set, but a + b > 0. Is it possible to make ...
15 views

### ArrayPlot arguments [closed]

ArrayPlot[initLat, ColorRules -> {1 -> White, -1 -> Black}, Mesh -> True, ImageSize -> Small] ArrayPlot::argt: ArrayPlot called with 3 arguments; 0 or 1 arguments are expected. Thanks!
32 views

### Pade approximants for Taylor series using mathematica [closed]

fluid-dynamics In running Pade Approximants for taylor series to rationalize using Mathematica for higher degrees, the program gets hanged. What can be the reason ?
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### Pass List / Vector argument through NDSolve to a function

I am trying to pass vector or list as argument to the function from NDsolve.And I am getting these error. Also I am pretty new to stack overflow. Apology if this a possible duplicate. Here is my code. ...
55 views

### “Most compatible vector representation”

When saving a plot through right click ► Save Graphic As…, Mathematica lets me choose several options, including separate vector representations for areas with ...
39 views

### Periodic boundary condition trick

I'm plotting a curve on a compact space which is having periodic boundaries on the left and right parts. Currently, the code I'm using is working great, but I'm wondering if there's a simpler and ...
198 views

### How to describe the convex hull of a set of points as an implicit region for optimization?

Last edit: 2016-05-03 A.G.'s answer was the one helped me the most, see explanation at the end of this question. Original question In Mathematica you can create out of a set of points in 2D and 3D ...
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62 views

### Random 3D cylinders plot [duplicate]

I have seen this trivial example for circles ...
75 views

### Integral Equation Solving [closed]

I need to solve two coupled equations such as ...
67 views

### NMinimize vs Simulated Annealing [closed]

Update I would find the global minima, the plotting shows that this function has many local minima. ...
43 views

### How to obtain the PDF of variable that is square of a Rician distributed variable? [closed]

If a random variable $X$ is Rician distributed with PDF $f_X(x)$ where $$f_X(x)=\frac{2x}{\alpha}\text{exp}\left(\frac{-(x^2+v^2)}{\alpha}\right)I_0\left(\frac{2xv}{\alpha}\right)$$ Then what is ...
33 views

### Reduce expressions modulo quadratic monomials more efficiently? [on hold]

I need to evaluate a function of the matrix $\begin{pmatrix}A & B\\ C&D\end{pmatrix}$ and arbitrary odd primes $p$ and $q$. Moreover, I need to set all non-linear terms in the $A,B,C$ and $D$ ...
53 views

### Graph not plotting any points [closed]

f [x_] := (x + ln[x] - 3) Plot[f[x], {x, 0, 5}] How come this comes out with an empty graph? I tried this and same results: ...
35 views

### Exporting String to NetCDF

I've already read a Q&A stating that because NetCDF does not support primitive string type variables, that it is impossible to export a string to a NetCDF file. For example: ...