# All Questions

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### Manipulations with options

I have two functions with options, for example f and g ...
12 views

### Why can't I change the Magnification in Printout Style in Default.nb

This happens with Mathermatica 10.3.1.0: When working with a notebook, I can choose between different working environments. However, they inherit their settings from Default.nb situated at ...
795 views

### How to create a histogram of annual events, such as cherry blossom time

I have calculated blooming and ripening times for a specific variety of plant, based on actual temperature data from over 40 years. I would like to create two histograms on a single axis; one for ...
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### How to generate two group of $n$ random numbers in $U(0,1)$ such that sum of these two groups equal?

I want to have two groups of $n$ random numbers $u_i$ and $v_i$ in $U(0,1)$, such that $\sum u_i = \sum v_i$ What I tried is: I can firstly get $u_i$ by ...
18 views

### Phase space of a system of differential equation

I have a system of three Coupled nonlinear equation of a physical system and i would like to plot the phase space. My system is a chaotic system dependant of three variable dependant of time (l1, ...
15 views

### Manipulate Problem in a Queueing Network Process

I have a two stage queueing network and want to vary the number of servers at the second node. The input data and the Manipulate command is below: ...
103 views

### Symbolic vs numerical integration

This is related to a question that I asked before but didn't resolve quite well. I want to obtain the solution of the following expression analytically: ...
37 views

### MeshRefinementFunction missing points

I'm doing some FEM on a rectangular region with a spherical cavity: ...
44 views

### Possible memory leak in FindMinimum? (MMA v10.0)

So I was running some code when I noticed Mathematica was gulping memory, and after some debugging I think the culprit is found. It turned out the function ...
21k views

### Labeling individual curves in Mathematica

I need to create a plot for export and inclusion in a report. Is there a better way to label curves than PlotLegends? From what I've read and my personal ...
98 views

### Linear fit with conditional noise distribution

I need to fit a linear model of the form $y_i = a · x_i + b + e_i$. The $e_i$ are independent noise from a distribution that depends on $x$ as well as on global parameters of the data; however, the ...
106 views

### solving coupled differential equations with parameters subject to optimization problem

I have an equation, but I don’t know how to program it in Mathematica: x[0]==1; y[0]==1; x'[t]==(a+b) x[t] y[t]; y'[t]==a b y[t]/x[t]; where ...
84 views

### Efficiently generating tuples with Outer

I'm trying to efficiently generate tuples of lists of objects that satisfy a given criterion. The similar questions that I have found on this website end up finding a specific workaround for the given ...
18 views

### Length in Compile encounter “type Integer encountered in assignment of Type Real ”

Compile[{}, Module[{n}, n = Length[{1, 2, 3, 4}]; n = n/2]] The above code will emit errors Compile::cset: Variable n of type _Integer encountered in ...
127 views

### How to extract a contour line (or a region) from a ContourPlot?

Given a ContourPlot with a set of contours, say, this: is it possible to get the contours separating domains with the different colors in the form of lists? ...
364 views

### Numerical solutions of Gross-Pitaevskii equation

I am trying to solve the Gross-Pitaevskii equation numerically and using NDSolve, but this seems to be a dead end. The problem is boundary and initial conditions ...
55 views

### Notebook Magnification changes - Why?

I have written a notebook but in order to edit it, I prefer 125% magification or even 150%. I know Window>Magnification. Also there is a small symbol on the right bottom of the notebook, where I can ...
67 views

### Export bug in combination with ParallelTable?

I am programming with Mathematica 10.3.1.0 on Windows 10 Professional 64 Bit and have an i7-4940-MX 3,1 GHz processor (4 cores). When I use in the example code below ...
24 views

I want to write a SystemDialogInput function that allows user to choose a file from a directory. In the directory, there are two kinds of image files: Atom images: The name of the file is in the ...
95 views

### Add terms to nested list

Suppose I have a nested list of the following: list={{1,2},{5,8},{4,1}...} I would like to add a number to each first term of the list. The output would be ...
35 views

### In the Wolfram Cloud RotateLabel in ParmetricPlot does not rotate Y-Axis label

Note this applies to version 10.3 running in the Cloud. ...
52 views

27 views

### ParrallelTable should distribute dedicated evaluation range to different kernels

I have 4 kernels and would like that in ParallelTable: ...
91 views

### Mathematica 10.3+ freezes on first evaluation after start-up (Mac)

When I launch Mathematica and write the first command and press Return+Shift, whatever the command is, it takes forever to evaluate — about two minutes. Immediately ...
214 views

### Follow each pixel brightness in set of images (Memory constrained)

I have a set of 2700 consecutive png images (8bit, 2048*2048 pixels). I would like to visualize the intensity variation of each pixel vs. image number. Here is an example of 10 images: ...
236 views

### CountryData fails for some tags and properties

The problem has gone, presumably resolved by WRI. See kirma's comment. I'm using Mathematica 10.0.2 for Mac, and for the first time just tried CountryData. ...
31 views

### Optimization (minimization) of equations with conditions [on hold]

I need to minimize the expression a+(b/3) + c under the conditions: ...
79 views

### Vector graphics in Export for Video rendering

I am trying to generate a vector graphics video in Mathematica. I stumbled upon SWF format (PNG are raster images which I'm not interested in). SWF format works fine for me but the axes and the ...
585 views

### remote kernel through SSH

Is it possible to setup connection to remote kernels through ssh? I'm able to SSH into the remote server(linux) and start a kernel in the terminal, but it can't connect back to my local front end. I ...
53 views

### How to solve for the eigenvalue in matrix?

For which value of $a$ in the matrix {{a,2}, {3,4}} has the matrix eigenvalue of $0$? How to solve it in Mathematica?
85 views

### I want to plot a list of points with specified t and x[t] coordinates [on hold]

I have this code: ...
16 views

### Custom configuration of kernels in Mathematica for multiple remote hosts

Yesterday I succeeded in getting a remote kernel working on a remote Linux machine. Now since the method I use gets me to initiate kernels manually, I was wondering if I could start kernels on two or ...
35 views

### FindInstance—why doesn't it work with my expression? [on hold]

I want to find arbitrary solution of a system of equations: ...
42 views

### How to represent one variable in terms of others in a system of equations? [on hold]

I have an pretty complex equation set But when I clicked Ctrl+Enter (a.k.a Evaluate Cell), nothing happened. What should I do?
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### Manually assigning Axes label position in Plot3D

How can I adjust the position of axes labels with respect to the axes they are bound? Like shifting slightly right or left. I do not what to destroy the graphics' dynamics and render it 2D. ...
62 views

### How to solve this recursive system?

I try to solve the equation system as ...
22 views

### How define shortcuts to specific OptionInspector points?

I often assign label to cells by OptionInspector (SHIFT + CRTL + O) > CellFrame > etc. It would be great to have the possibility to jump directly to CellFrameLabel or, even better, to edit the label ...