1
vote
0answers
179 views

Simulations with MonteCarlo and Autoregressive methods

I am trying to find the best-fit trend for my data. Here I just generated it but let's say I don't know my data trend at all. ...
6
votes
3answers
257 views

Displaying a locator that moves smoothly and updates some dynamic variables

I want to select a point on a graph and display a function of the coordinates value. Asking here a related question I learned to use Setting. Consider the example, where I display the coordinate ...
1
vote
1answer
576 views

Plotting a network or a graph with given coordinates for vertices

I'm new to Mathematica yet have coded a lot in MATLAB. Currently I'm working on a network simulation. My model is implemented in MATLAB, but I need to port it to Mathematica. Here is my question: ...
0
votes
2answers
133 views

Can you label an array by variables or strings instead of integers?

Is there a way to label an array by a variable instead of an integer? For example calling the array I[i,j] with {i,j} = {x,y,z} ...
0
votes
0answers
40 views

Nested For Loops that result in no output [duplicate]

I am sure that this is not the most elegant code you will have seen, but I am trying to loop through an expression to see if FultonHarrisn] produces any outputs ...
4
votes
3answers
187 views

Output to preserve dot product

I am fairly new to Mathematica and I am faced with a problem. I tried to search for the solution but it seems that I don't know how to formulate the short search request. I need to perform a matrix ...
4
votes
1answer
320 views

ListDensityPlot performance when scaling axes

I need to visualize 3D data having 200*200 data points. ListDensityPlot is a good candidate, but it seems to have strange performance issues. I created a small ...
8
votes
5answers
3k views
3
votes
2answers
464 views

RecurrenceTable with a recurrence function of two variables

I have to calculate the cool down process of a regenerative heat exchanger. I solved the problem in Excel before, but now I want to do it with Mathematica. I want to create a table with the variables ...
8
votes
2answers
852 views

Writing data to a common file during parallel processing

I am executing a loop, and in each loop I have to store a parameter in a file. It is like ...
4
votes
3answers
126 views

Graphics updating from inside double-Fold-iteration within Manipulate

Normally, when using Manipulate[expr, controls, options], the graphics updating should be carried out at the very end of expr. But now I encounter a situation ...
10
votes
2answers
557 views

How to create custom Graphics primitive?

How to create custom Graphics primitive? It should have the following properties, resembling properties of built-in geometric figures, like ...
1
vote
0answers
110 views

Remote access to notebook is very slow

I am using Mathematica at work remotely from a computer in my building and I can edit notebooks by opening them from terminal via ssh without problem (a little slow if there is a figure with many ...
1
vote
1answer
258 views

Custom TransformationFunction in Graphics? GeometricTransformation::nonaffine error

There are many functions in Mathematica, which return expressions with TransformationFunction head, for example RotationTransform. Unfortunately, there is no ...
0
votes
1answer
188 views

How to simulate with a user specified bivariate continuous probability distribution [duplicate]

I am very new to Mathematica set up and I have the following question: I have a bivariate probability distribution which is a little complicated and of the form: $$f(x,y)=(a_0+a_1+a_2)\frac{a_1 ...
1
vote
2answers
549 views

Interpolating and plotting a surface for a sparse set of 3d data points

I have a set of $(x,y,z)$ coordinates which sparsely cover a surface, e.g.: data = {{51, 15, 0.1}, {300, 11, 0.99}, {140, 22, 0.123}, {54, 12, 0.66}, ...}; What ...
2
votes
0answers
75 views

Must Run Cell Twice to Display Values

What is going on here? Print[InputField[]] CellPrint[TextCell["my\"text", "Text", ShowStringCharacters -> True]] If I insert the above code into a blank ...
1
vote
3answers
355 views

Replace with position and order number

question conversion1 : Convert "[AA]AB[AA]BB[AA]B[AA]CCC" to "[A1A2]A3B1[A4A5]B2B3[A6A7]B4[A8A9]CCC" conversion2 : Convert ...
11
votes
1answer
392 views

How to convert a notebook cell to a string retaining all formatting, colorization of identifiers etc?

I have an opened Mathematica notebook containing several cells. Suppose, I am interested in one of them -- it may contain a complete or incomplete expression (e.g. with syntax errors, highlighted ...
6
votes
2answers
578 views

Plot3D constrained to a non-rectangular region

I would like to make a nice 3D graphic of a parabolic bowl, with a cylindrical rim. If I do the following: Plot3D[x^2 + y^2, {x, -3, 3}, {y, -3, 3}] I get a ...
0
votes
1answer
94 views

Symbolically implementing the following product

I have two products I hope to compare symbolically and I am hoping to use Mathematica for this. They are as follows: $$ \prod_{1 \leq i < j \leq n} {(a_i + ...
9
votes
1answer
134 views

Is it possible to use the global definition of a symbol as part of its new local definition set in a Block?

Consider the following expression: Block[{Print = CopyToClipboard}, doSomething[]] Now all calls to Print from ...
0
votes
1answer
193 views

Import variables from excel

I have an excel file I am trying to import into Mathematica. It is in the format of variables names in the first row of each column and then the data underneath. One of the columns specifies ...
4
votes
1answer
648 views

Slideshow export to PDF (landscape)

I am trying to export a slideshow presentation that I have created in Mathematica 8 to PDF in case I have trouble connecting my laptop to a projector for a talk I am giving. I have tried Save As, Save ...
3
votes
2answers
278 views
0
votes
1answer
63 views

InputField AutoSize Speed Issue

How do I have an InputField adjust to fill the remaining size of the window automatically? For example: Using the ImageSize ...
2
votes
2answers
341 views

City/Country Names by GeoLocation

How do I get the city and country names from the output of FindGeoLocation[] {lat, long} ?
0
votes
1answer
130 views

Retain required terms in asymptotic expansions

I am using Mathematica 8 to do lengthy asymptotic expansions for use in statistics. In particular I have $\lambda=\beta+\epsilon+\delta+\gamma+O(n^{-5/2})$ where the first term is of order ...
3
votes
1answer
463 views

Multi-dimensional integral in the complex plane with poles and essential singularity

I've passed the last week searching a way to numerically integrate this multi-dimensional integral in the complex plane at the poles and avoiding the singularity at z=0: $$ \oint_{C}\oint_{C\ auound\ ...
1
vote
1answer
224 views

Handling Overflow

I have a notebook which takes in a user-defined function and starting value and tracks the orbit of the particle under iteration of the function. The problem occurs when the user enters a starting ...
2
votes
2answers
161 views

Manipulating several values from the same interval

Some of my calculations depend on the choice of several values from the interval [-2, 2] (it is more or less interpolation of a fixed function using the points as parameters). I want to create a ...
2
votes
1answer
857 views

How could I define a function as the solution of equations in Mathematica?

I have posed a specific question yesterday but it may be too trivial to answer. I think the question could be asked in a more general way so it is easier to answer. Then I could solve the original ...
3
votes
2answers
285 views

StringReplace except some pattern

StringReplace and search out of one pattern ...
1
vote
1answer
140 views

Working precision for each variable

How can I define working precision for each variable individually for example: Maximize[x y< 100, {x, y}] where the working precisions for ...
0
votes
1answer
199 views

Module Returns Two Values for Plot; I need to Color them

This is probably a very stupid question, but I've been fighting with it for quite awhile now. So suppose you have a module: ...
5
votes
1answer
185 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
907 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
87 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
152 views

Data format of Date including data

I have ...
1
vote
1answer
133 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
168 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
105 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
153 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
506 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
671 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 ...
9
votes
3answers
687 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
184 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
301 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
743 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
134 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 ...

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