5
votes
1answer
180 views

Error in ARIMAProcess example

I am trying to compile the sample of ARIMAProcess of MMA here .It doesn't work.What is wrong?Could you please help?I am using exact same code. ...
1
vote
1answer
778 views

PlotStyle in ListPlot: change color scheme, manually choose color of first plot

Say i have this data: data1 = Map[Cos, Range[0, 20]]; data2 = Map[Sin, Range[0, 20]]; And i want to plot data1 in gray and a ...
1
vote
1answer
84 views

How can I transform parts of an Integer list to a String list

There is a sorted list of Integers. ilist = PadRight[Sort[ RandomSample[Range[1, 99999], 3], Less], 5] It should become string area codes like: ...
1
vote
4answers
144 views

Data format of Date including data

I have ...
1
vote
1answer
132 views

Difference between vector's Dimensions

What's the difference between projection= Table[Conjugate[autoVett[[k]].someVector1], {k, 1, r}] Dimensions[projection] that gave me as results ...
3
votes
2answers
159 views

How can I change the highlighting color of an InlineMathCell?

When using the InlineMathCell one types Ctrl+9 within the text cell, and gets a slot for starting typing the InlineMathCell part. When typing the content of the InlineMathCell is slightly highlighted ...
1
vote
0answers
102 views

Split one string about a fixed width with `SyntaxQ=True`

How to split one string about a fixed width, the string may come from the input or output cell of Notebook. sample string ...
1
vote
1answer
151 views

Plotting a pattern made of repeating unit blocks but of changing width

I am plotting a pattern as illustrated in link shown below. I want to create an image of fixed size. The whole image should be filled by repeating unit blocks which consist of black and green ...
13
votes
2answers
467 views

How to embed an image into a string?

Note: The bug described in the post is in Mathematica 9, and has been fixed in 10.0. The documentation for String contains the following statements: Strings ...
4
votes
1answer
583 views

How to draw a Circle in a graph with Log Y Scale

I've programmed drawing tools for graph images and am experiencing a problem with the coordinates of an Ellipse on a graph with a Log Y axis. It's quite easy to work out the Y Axis coordinates for ...
8
votes
3answers
574 views

Expression of uncertainty in measurement.

I have a problem with writing a Mathematica function. I have been requested to show the results of my experiments with the measurement uncertainty (mu) like below: ...
0
votes
0answers
154 views

Non linear constrained interger Optimization

I need to maximize the equation below which is subjected to some nonlinear constraints Maximize hsum + isum + jsum + ksum + lsum + msum + nsum + osum ...
0
votes
0answers
251 views

Interpolating function as a model in Mathematica's procedures for fitting

Is it possible to use interpolating function with parameters as a model for NonLinearModel fit (and other integrated methods for fitting)? Similar question was already posted earlier - How do I find ...
2
votes
0answers
655 views

Linear regression with x and y errors

I have a question about finding a linear regression weighted with x and y errors. I found the answer provided by 0x4A4D in Estimate error on slope of linear regression given data with associated ...
0
votes
0answers
121 views

How to evaluate only arguments, but leave topmost expression unevaluated? [duplicate]

I want to represent expressions mostly in unevaluated form, but being able to evaluate it's subparts. For example, how to evaluate only arguments, but leave topmost expression unevaluated? For ...
0
votes
0answers
35 views

Eigenvalues for large matrices without Root-Solution [duplicate]

I read some other questions and tried to implement the given answers but yet, I did not succeed to find proper solutions for my eigenvalues. I hope someone can show me how to do this for this case, ...
2
votes
1answer
199 views

Unresolved differential equation [closed]

Why can't Mathematica solve this equation as stated? ...
0
votes
0answers
32 views

Differential equation [duplicate]

Why mathematica not solve this equation: In: DSolve[{z''[t]==(z'[t])^2+(z[t])^2-Sin[t]-1, z[0]=0,z[Pi/2]=1},z[t],t] Out: DSolve[{z''[t]==(z'[t])^2+(z[t])^2-Sin[t]-1, z[0]=0,z[Pi/2]=1},z[t],t] ...
18
votes
4answers
1k views

Visualization of Bivariate Distributions

I know it is perfectly possible to show the bivariate probability distributions in MMA. But my question is can we show each dimension of distribution in 2D dimension while we are showing the 3D plot? ...
10
votes
3answers
484 views

Image Processing: Concrete test blocks

Background Concrete is mixture of aggregates and cement. Aggregates are composed of different sizes and colors. Core samples are taken by drilling in order to test the strength of concrete . They are ...
0
votes
0answers
105 views

Non-Solvable PDE?

I would like to know whether this PDE is solvable and if yes, for which values of $a$. ...
6
votes
3answers
437 views

Share experiences, preferably the surprising ones, with using ItoProcess

Can people please share their experiences, preferably the surprising ones, with using ItoProcess? I am a big fan of ItoProcess and have already used it for several finance-related tasks, though I ...
9
votes
6answers
410 views

Performing Computations on Sets

I would like to find a permutation of $\quad S=\{\frac{1}{10}, \frac{1}{2}, \frac{4}{7}, \frac{3}{5}, \frac{2}{3} \}\quad$ that maximizes the sum of theses elements raised to unique powers: ...
0
votes
0answers
129 views

Integrating and plotting pde system solution

I have a trouble with plotting a pde system solution. I'm solving a PDE system in 2-dimensional space and then I want to integrate the solution along one dimension and build a log plot along the ...
11
votes
1answer
453 views

RLink and R v3.0.1?

Running InstallR["RHomeLocation" -> "C:\\Program Files\\R\\R-3.0.1"] results in a popup box titled "Version Mismatch" saying Error: R.DLL version does ...
1
vote
1answer
543 views

ItoProcess function

While looking in the help manual of Mathematica concerning the ItoProcess function I found the following: ItoProcess[{a,b,c},x,t]: represents an Ito Process y(t)=c(t,x(t)), where ...
0
votes
0answers
111 views

How can I revise my program to avoid “No more memory available”? [duplicate]

I have a program for calculating a type of list. ...
3
votes
1answer
215 views

InputField with Scrollbars [duplicate]

Edits are marked in bold: How do I make an InputField that behaves just like the following HTML Textarea example. ...
1
vote
2answers
157 views

How to convert comment in RowBox to DisplayForm string

ToExpression[RowBox[{"a","(*","what", "*)"}],StandardForm] This conversion above ignores the commment content (*what*) The ...
13
votes
2answers
420 views

Improve TextRecognize[] on numbers

I have an image contain only numbers, and TextRecognize fail to recognize some numbers: img=; TextRecognize[img] (*826718*) The documentation says that "The ...
4
votes
3answers
382 views

Summation with constraints

I am trying to do the summation shown below, $\sum_{i_1=0}^{imax_1} \sum_{i_2=0}^{imax_2} \dots \sum_{i_k=0}^{imax_k} f(i_1,\dots,i_k)$ $k$ is a variable. Therefore $i$ and $imax$ are defined as ...
1
vote
1answer
122 views

Simple Macro or Meta Programming for Data Analysis [duplicate]

I have a large number of data variables that are represented in MMA as symbols set to lists. For example: x = {1, 2, 3}; y = {4, 5, 6}; I want to be able to ...
1
vote
3answers
108 views

DateListPlot input entry problem

I imported some data from Excel and got the following for my date and values: {{{1986, 1, 2, 0, 0, 0.}, 25.56, ""}, {{1986, 1, 3, 0, 0, 0.}, 26., ""} It seems ...
1
vote
0answers
88 views

NMaximize with matrix input

I defined function f[x_, fixed_] := {...}. Here x is an $M\times N$ matrix. I want to maximize $f$ with respect to $x$. I have ...
1
vote
0answers
54 views

Animated 3D graphics is low resolution [duplicate]

I'm trying to animate a 3D shape in Mathematica 7. It's working, but the graphics is extremely crude while animated. The resolution gets better if I stop the animation. Is there a way to get a nice ...
0
votes
3answers
455 views

Derive a smooth circle with cusp from an image

question 1 get the center (sample data) sample is the black circle with cusp. ...
0
votes
1answer
59 views

Color of numbers and defined functions [duplicate]

How do I change the color of numbers and the text representing defined functions in my notebook?
6
votes
1answer
117 views

How to export to .html .nb file together with links «in» and «out»

If use «File > Save As > HTML» links «in» and «out» are lost How to save a document without loss of these lines/links? UPD: You can write in the css rules (...
23
votes
2answers
1k views

Find radii of concentric circles in image

I have an image of concentric circles, I would like to find the radii of the circles (only the innermost few are important). I've had a go using what I could find in previous posts, but am a bit ...
5
votes
1answer
144 views

Importing Data with Line feeds

I am trying to import data from a CSV file into Mathematica that contains line feeds in certain elements that I wish to be properly rendered in Mathematica. I suppose this has something to do with the ...
2
votes
1answer
158 views

Effect of Block[] on iterators in Manipulate[]

The following is a toy example that hopefully shows the problem clearly enough. Why does the following code create a nice, manipulable output: ...
4
votes
2answers
259 views

Adapting “Find and Replace” functionality to work with Patterns

I was thinking if there is something like Find and Replace (Crtl+F) functionality adapted to work with patterns. Probably not, but it seems possible to create this with some effort and skills in ...
0
votes
1answer
501 views

How to simulate the response of a linear parametric varying system in Mathematica?

Consider the following system \begin{align} \dot{x}(t)&=\sum_{i=1}^{2}\rho_{i}(x(t))\left[A_{i}x(t)+B_{i}u(t)\right]\\ y(t)&=Cx(t) \end{align} with: ...
1
vote
1answer
137 views
1
vote
1answer
651 views

Fixed color scale in multiple density plots with Fixed PlotLegends scale

From the great answer of Mr. Wizard, I would like to learn how to implement the associated PlotLegends scaled too. Here is the simplest example with PlotLegends, which does not look to be scaled: ...
3
votes
0answers
127 views

Exporting multiple arrays in a single HDF5 file in Mathematica 7

I am using Mathematica 7 and I need to export a table of data and the corresponding x and y arrays. I would like to format them ...
5
votes
2answers
480 views

How to graph a series of coupled oscillators and watch the wave move along them

Here are the differential equations that set's up the 11 coupled oscillators. ...
2
votes
1answer
226 views

How to apply a free-form input Function using InputField

I am trying to take a free-form input Function to create a list using NestList. ...

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