# All Questions

18 views

### Pass the list of variables into function to change their values

I'm new to Mathematica, so I don't really know, how do what I want, and I don't even know how to google it. Doing one Mathematica task for my supervisor, I faced the following problem. I need to ...
27 views

### How to create a stacked-alphabet image efficiently?

By adopting the answers from Mr. Wizard to my previous question, I tried to create a stacked-alphabet image from a person's portrait, the alphabets were taken from the name of the portrait subject. ...
34 views

### How to remove a line of a matrix if not all elements are numeric?

I have a matrix a n columns and m lines. I'd like to efficiently remove the lines that are not entirely composed of numeric ...
20 views

### Appending functions to a list

Could someone please explain the difference between these methods, and possibly a nicer way to get the first result? (This is a toy example and in my real program I'd like to use ...
25 views

### Simulation of Circular plate vibrations

I'm trying to simulate the vibration of a circular plate with a free edge. The plate wave equation describes the vertical displacement of the middle surface of the plate $(\zeta)$ as a function of ...
34 views

### Plotting a region with polar axes

I want to plot the region of points who satisfy the following equation: 2 < r <= 5 && 3/4 π < θ <= 5/4 π I have been able to plot region in ...
22 views

### Implementation of Series function

I'm trying to evaluate the partial derivatives of some function F[x,y] at some point, i.e. ...
20 views

### Using Compile Function Options efficiently

While this gives general pointers, I have a practical problem and need someone to help me understand. I have four supporting compiled functions a, ...
42 views

### Passing function as argument

I've been mucking around with passing functions as arguments to other functions and via trial and error seem to have something that works. I was wondering if someone could have a quick look at some ...
108 views

### Why does N[Re@f] give complex result?

Consider this code: ...
23 views

### InterplationOrder, ListPlot3D and using AbsoluteOption to find value used. Slow using InterpolationOrder

What lead to this, is when I noticed that ListPlot3D was much slower when adding a specific InterpolationOrder->n vs. not and ...
197 views

### The correct pattern for Cases

I have a problem that, admittedly, I have already solved using Select instead, but it is irking me that I cannot seem to construct the right pattern to solve it ...
60 views

### How to identify more than one truck on a picture [on hold]

First, I am completely new to the field of image processing and I don't know how to start. My problem is as follows: I am doing a data analysis to identify if there are multiple trucks on certain ...
67 views

### When is Mathematica 10.0.1 being released? [on hold]

Mathematica 10.0.0 is very buggy. "Formatting Notebook Contents" freezes on win7x64 is the most frustrating of them all.
37 views

### Stochastic Approximation and Simulation using Running Median

I have a function $$F(X_{t+1},Y_{t}^{med})= \alpha X_{t+1} + (1-\alpha) Y_{t}^{med},$$ where $$Y_{t}^{med} = Median(Y_1, Y_2,... Y_t).$$ Moreover, $Y_1 = X_1$ and $Y_t = F(X_{t},Y_{t-1}^{med})$ ...
18 views

### different values of integral with/without bogus assumptions

I do not understand why I get different answers for the following two identical integrals. ...
21 views

### Export multiple graphics into same file

I have a plot and a table that I am trying to plot in a single file together. I have a "working" example, but it is not perfect. I export a list, but it keeps the commas and brackets, that is the only ...
127 views

### How to see abstract syntax tree of Wolfram Language expression

I mean, suppose I have this expression: 2 + 2 I want to get something like this: Plus[2, 2] as an output. I've tried FullForm, but this just evaluates 2+2 and returns 4. Is this even possible?
35 views

### When event and “stop integration”

I am using NDSolve, to solve for an equation. At some point, I want it to stop integrating and keep a constant value for the solution from the point it stopped changing. I tried setting the derivative ...
65 views

### Is the MaximalBy function still used [on hold]

On the mathematica reference website it gives examples using the MaximalBy function, However when I am using it, I see no desired output. This leads me to wonder if mathematica has stopped using this ...
46 views

### Plot a one-dimensional list of numbers as a column/row of labeled colored squares?

I have a list of numbers, and a matching list of labels. I want to plot a column of colored squares, with the color of each square matching (in some color scale) the value of the corresponding number. ...