# All Questions

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125 views

### Creating an orrery

I am interested in creating an orrery, ideally with SystemModeler. I have been experimenting with the MultiBody library since that allows you to do animations. The most relevant example seems to be ...
128 views

### Front-end: How can one programmatically extract window titles?

I would like to programmatically get the titles that appear at the top of notebook windows, particularly for notebooks that have not yet been saved (if they have been saved, I can get the information ...
76 views

### Why are the edge items in Grid truncated?

The first and last rows and columns of my Grids always seem to be smaller than all the other rows in my Grid, as of they had ...
83 views

### Generating increasingly longer lists from a single list

I start with an array such as {{1,1},{0,1},{-1,1}}. (1) I want to create an array from this which replaces each array inside the array with 3 new arrays, one ...
118 views

### Ways to overcome failure of TextRecognize on relatively simple price tag?

I would like to perform OCR on this sample image. TextRecognize[Import["RedBox.jpg"], Language -> "German"] returns ...
82 views

### Combining two SmoothHistogram plots without normalization of each

I'm trying to plot a density of states out of a list of energy values, and on it I want to include another over-layed plot with it that shows some fraction of that density of states at different ...
95 views

### Turning off black lines appearing in plots from the ContourPlot function [closed]

ContourPlot[Sin[6.5 x], {x, 0, 2 Pi}, {y, -1, 1}] The image turned out crappy, but basically, I do not want all the vertical black lines. I assume this is ...
132 views

### Transform a rule to a list of rules

How can this rule a -> {1, 2, 3} be transformed into this {a -> 1, a -> 2, a -> 3} by way of a function? ...
346 views

### How do I find the position of the maximum value in each column of a table?

Given a table of values, I know how to find find maximum values, but how do I find the position of the maximum value in each column. For example, given ...
291 views

### Plot a space curve and its curvature

The vector is < te^t, e^-t, Sqrt [2]t >, where -5 <= t <= 5 I have to plot the space curve and its curvature ...
70 views

### Missing solutions for complex equation system

I am currently working on a game-theoretic paper and trying to match two complex best response functions. The equation system includes two decision variables x and ...
153 views

### Unmapped white region in ContourPlot, PlotRange -> All does not fix the issue

When I try to create a ContourPlot of the magnitude of the following vector I get a white area that should be filled with values. Running the following code: ...
321 views

### CSV vs XLS for import

I need to import data from various database sources. At the moment I plan on importing files via a CSV file or XLS. All the data if in XLS would be on one sheet (notebook). Are there any advantages ...
249 views

### Interpolation function error: Interpolation::femimq and Interpolation::fememtlq

In Mathematica 10 the following command ...
193 views

### Labelling a subset of contours using ListContourPlot

I have a data set with entries of the form [nx,ny,E] and have made a contour plot of this data. I would like to add labels to only a subset of these contours, for instance every other contour. How ...
106 views

### LinearSolve in Mathematica, used to find square matrix

Another issue I have with Mathematica today is that I want to solve the following matrix equation: X.b=c where b and c are two vectors, and X is a square ...
76 views

### Extracting the body of a function

I have a very simple issue with Mathematica, but I can't seem to find an answer for it. I solved an equation with DSolve, and I got a result as an array of the following type: ...
441 views

### How to extract a list of available Method-s

The option Methodapplies for several functions, such as NDSolve, FindRoot, ...
80 views

### How to indroduce a value for the functions inside a matrix? [closed]

I would like to assign certain values to the X and Y variables which are inside the functions in the matrix. Thus, I would like to get a matrix with values based on the transformation in Psi matrix. ...
308 views

### Frame labels for Overlay of two plots to look like plot with two y-axes

I have a two time differential equations system: A[t] and B[t]. (I am omitting their specific form.) I would like to display the ...
358 views

### Fitting data to a circle with FindFit

I'm currently trying to use the Mathematica's FindFit command to fit a curve of some data to the bottom half of a circle. The data is of the form ...
158 views

### ListPlot with background image?

I need repetitive plots like this below. I invented that I refuse to use pen and I will plot the points in Mathematica, then change opacity, then change contrast and voula get the points to the graph ...
498 views

### Calculating an integral by the Romberg Algorithm

In my "Numerical Analysis" course, I learned the Romberg Algorithm to numerically calculate the integral. The Romberg Algorithm as shown below: ...
2k views

### How to programmatically extract mathematical formulas from Word with Mathematica 9?

I have a bunch of(1000+) Microsoft Word document in .Docx format. How can I programmatically extract the mathematical formulas from MS Word using Mathematica 9? This is what example looks like (or ...
125 views

### Show how Eliminate arrives at reduction

Does anyone know how to get Mathematica to show how it arrives at the following result? ...
89 views

### How to show right count of decimal number in mathematica 10

I have some random number x. It can be 222.1245646 or 3.141562652. How should I show this number to 5 decimal numbers ? I cant use this: N[x, 5] because it shows 5 ...
695 views

### Simple while loop alternative in Mathematica

I have noticed that there are a few examples that go into some detail regarding While loop alternatives. (See here for example: Alternatives to While Loops?) However, I wanted to provide a simpler ...
103 views

### Can I use 'ItemStyle' in 'Grid' to specify the style of individual items? [closed]

I'm confused by the documentation for ItemStyle. I can't figure out how to specify styles for individual items in a Grid. ...
2k views

### Is Mathematica 10 compatible with Mac OS X 10.10 Yosemite

When I try to launch Mathematica 10 on my iMac with OS X 10.10, I get the message: To open 'Mathematica' you need to install the legacy Java SE runtime. However, a Mac version is not available ...
224 views

### Complicated list slicing

Say I have a list with the structure list = {{1, {x1, y1, z1}}, {2, {x2, y2, z2}}, {3, {x3, y3, z3}}, ...} I would like to slice it such that I end up with ...
66 views

### DynamicModule not plotting intersection region?

I am trying to show and calculate the area of two overlapping, shifted hexagons using the following code: ...
111 views

### Forcing Ticks on Lower Left Corner of Plot

I have a graph that looks like this: I need to have it labeled so that 14 appears in the lower left (I know it's obvious but that's what the publication I'm working with wants). That makes the ...