5
votes
1answer
216 views

How to plot points with uncertainties and dates assigned?

I want to plot a graph from list of points, but each point also has uncertainty assigned AND date. Without uncertainties DateListPlot works great, without dates ErrorListPlot works OK, but how it ...
2
votes
1answer
689 views

Shortcuts for integration and differentiation?

I am trying to learn the most useful keyboard shortcuts for doing basic operations such as integration, differentiation etc in standard form. A few questions - I have checked the documentation and ...
32
votes
2answers
961 views

Documentation searches hang frequently: Anyone else dealing with this?

I've been struggling with a number of hangs, dynamic timeouts, and outright crashes when using the search/documentation center in version 9. I've tried uninstalling/reinstalling and clearing ...
7
votes
1answer
187 views

FontSubstitutions: how do they work?

I'm puzzled by FontSubstitutions. The help says this: FontSubstitutions is an option for Style and Cell that gives a list of substitutions to try for font ...
1
vote
2answers
327 views

Adding multiple Complex Numbers in Euler form

Say I have a series of $n$ complex numbers of the form $A_k e^{(I \ \theta_k x)} $ where $A_k$ is a real number and so is $\theta_k$ and $k$ runs from $1$ to $n$. $x$ is an algebraic symbol. ...
11
votes
4answers
629 views

How can I return a Sequence?

Recently I had the need to redefine a certain symbol in my init.m so it would be automatically omitted from any lists it appears in. I decided to redefine it to an empty sequence, e.g. ...
3
votes
3answers
276 views

Strange behaviour of OutputResponse

I am having some trouble when using OutputResponse. For instance consider the following command ...
1
vote
2answers
69 views

Factor inside argument

How do you use Factor so that it will factor expressions inside the arguments of some bigger expression. For example Factor[ Cos[t w - t z]] gives ...
0
votes
0answers
49 views

MATLAB-like convolution and derivation using Mathematica [duplicate]

Possible Duplicate: Discrete Convolution I would like to be able to convolve two functions of two variables in Mathematica, and then plot derivatives (or functions of derivatives) of the ...
4
votes
1answer
407 views

Exporting Mathematica expression as SVG

I was thinking it would be nice if I could export Mathematica expressions as svg, but I am having some issues. At first blush everything seems to work fine. This piece of code does produce a svg file: ...
2
votes
3answers
740 views

Using DSolve to solve for x[t,parameter]

I'm trying to solve an ODE with two independent variables (a cannon firing from a cliff incorporating wind resistance dependent on velocity). I've tried the following for the x-component: ...
5
votes
1answer
830 views

How do I find the Euclidean distance between one point and all the points in a list?

I want to find the Euclidean distance between one point (x1) and a list of points (y1), which contains a lot of coordinates x1 = killer[[2]] {6.05102, ...
1
vote
1answer
241 views

Initialization Time Out (Weighted Financial Data)

I've been playing with WeightedData and wanted a financial engineering example, a colleague suggested working with the fractional return (...
2
votes
1answer
515 views

intersection between two curves in Mathematica

I have two curves (drawn from points) in a plane, one is drawn with ListLinePlot and the other drawn with ParametricPlot. How ...
6
votes
2answers
804 views

Elegant way to handle columns operations

Inspired by this question from @sjdh and by my recurrent use of columns operations in database sets, I was looking for one way to make columns operations more symetric, so I can handle with matrix and ...
3
votes
1answer
379 views

Integrating over Bessel Function erroreous? (Hankel Transform)

The Hankel Transform is given by Integrate[f[x] x BesselJ[0,x t],{x,0,Infinity}] It is self-inverse, so ...
12
votes
4answers
873 views

How do I solve a PDE with a strange boundary condition?

How do I solve the PDE with boundary value like this $$u(t,x,y)=0, \textrm{when } F(x,y)=0$$ using DSolve? As a specific example, I want to solve heat equation $$\frac{\partial u}{\partial ...
4
votes
2answers
233 views

How to get a list of available appearance/styles?

This is a basic question but I haven't found any answer yet :/ Available appearances for Button[] are mentioned in Help, those ...
2
votes
2answers
136 views

How to use the Find and Replace Dialog Window?

The Find edit box in the Find and Replace Dialog Window shows a default word while opening. How do I tell it to show the word in which the mouse cursor is located in the Notebook, rather than the last ...
10
votes
1answer
414 views

Parallelization and Hadoop

The short question: Has anyone used Mathematica in conjunction with Hadoop and does Mathematica's built in parallelization play well with Hadoop? The long version: So I have a Mathematica program ...
2
votes
1answer
222 views

Using ToExpression within Manipulate

I would like to use ToExpression (or Symbol) within Manipulate. Specifically, when running ...
2
votes
1answer
293 views

How can I handle curve singularity in this NIntegrate integration?

Yesterday I asked a question about the non converging integral. Woods told me that it is due to the function which has a singularity along a line which passes through the integration region. (Why ...
9
votes
1answer
1k views

What is the full list of all font families?

I'm having trouble finding a complete list of the FontFamily strings that mathematica supports.
3
votes
1answer
216 views

Help on how to write a function to be used with NMinimize

I need some help to write a proper function to be used as a parameter on NMinimize. Here is the code of the function to be minimized (Please correct, optimize and rewrite the code if you want to - I ...
1
vote
2answers
901 views

Solving cubic equation for real roots

I'm looking to solve the following cubic equation for x: $\beta\, x^3 - \gamma \,x = c$. I have plugged in some sample values ($\beta = 2$, $\gamma = 5$ and $c = 2$). When I try to solve this ...
1
vote
1answer
98 views

When is Evaluate needed within function arguments? [duplicate]

I'm trying to do a simple variable substitution within a ContourPlot, but it's not working. Here's an example: ...
25
votes
5answers
1k views

How can I define a 3D version of the built-in VoronoiDiagram (VoronoiMesh in V10) function?

Can anybody point me in a direction that will guide me to extend the VoronoiDiagram function in Mathematica to handle 3D (three dimensional) situations (i.e. points in 3D)? Any help will be greatly ...
7
votes
1answer
305 views

How to change brackets in TraditionalForm output

I'm trying to improve TraditionalForm's output by using different brackets when there are more than one. For instance, instead of $u(v(r(b))))$, I'd like to get ...
2
votes
1answer
144 views

Implementation of Decompose

I'm curious as to how Decompose works so I decided to use Trace with the option ...
3
votes
2answers
236 views

Represent Plot Scale with an offset

I want to know how to represent the axis on my 3dplot with a scaled offset. Please see the image below, I just want to show in the plot as {X-Axis*0.1} and {Y-Axis*0.1} ...
1
vote
1answer
319 views

How to copy/paste an OverHat symbol into Microsoft Word 2010 properly?

I have problem with output traditional form of sign above the constant. When I copy/paste in word it is far away up. Is there solution for this? ...
1
vote
2answers
197 views

Manipulate: SetterBar with list of functions

From the documentation: Manipulate[Plot[f[x], {x, 0, 2 Pi}], {f, {Sin, Cos, Tan, Cot}}] How do I include a function like $1/x$ or $x^2$, etc. in that list? I ...
1
vote
1answer
238 views

ListPlot with labels that appear when the pointer goes over the points

I would like to generate a ListPlot with labels that appear when the pointer goes over the individual points. Specifically, I have a table of dimensions ...
7
votes
3answers
498 views

FullSimplify does not work on this expression with no unknowns

I can't reproduce this simple example from Habrat, 2010 ("Mathematica : a Problem-Centered Approach"). It is supposed to demonstrate the functionality of ...
3
votes
1answer
506 views

DensityPlot with one log axis

Is there any way of generating a density plot (or something similar) with one of its axes on a log scale? Essentially I'm trying to combine a LogLinearPlot and a ...
18
votes
4answers
1k views

How to integrate functions of linearly interpolated data?

At first, consider integration of pure InterpolatingFunction. Importing some data (works in v.9, for earlier versions one can use this link to download zipped ...
1
vote
0answers
610 views

Speed up Numerical Integration

EDIT: I need to evaluate a very complicated multi-dimensional Integral. The dimension of the Integral depends on a variable j. Let's make my point clear with the ...
1
vote
0answers
93 views

ReadList and multiple access of the same file

I have a file containing a large amount of data which can be processed independently. In order to process all data in a reasonable amount of time I distribute the jobs on three different machines. ...
1
vote
1answer
517 views
8
votes
2answers
161 views

How do I inherit a specific cell option from another style (without copy paste)?

How can I define a style with FontSize from Section and CellFrame from Program?
3
votes
3answers
180 views

Count items in a list that occur before a date

I have a list of dates that happen throughout 2013. I wish to construct a graph showing a cumulative total of elements that happen before that date. I have a working algorithm, but it seems too slow ...
7
votes
1answer
794 views

Plot cross sections of a function

I have been learning how to use Mathematica for the past few weeks, and recently I have been trying to recreate something along the lines of this. Given a function, I want to create a 3d plot of ...
0
votes
1answer
272 views

Make Mathematica wait before replacing?

How can I force Mathematica to completely evaluate a subexpression before using a replacement rule? For example, consider the following definition (for the series of ...
0
votes
0answers
77 views

How to get a more traditional-looking for protected constants [duplicate]

Is there any solution to make rule to export as a traditional form protected constants. Here is example which doesn't work. ...
4
votes
0answers
87 views

Using Resolve and ForAll to prove takes a really long time

I've been trying to prove a lemma for my paper using Mathematica... basically that $$\forall \{n, d_i, d_j\} \in \mathbb{Z},\ n \ge d_i > d_j \ge 2$$ it's true that $$V[1, n, d_i-1, d_j-1] ...
6
votes
1answer
133 views

Different actions with dragging and clicking points in same graphic

On a graphic (in this example a simple plot), I need two points to move when I drag with the mouse, and these points must move to location {1,1} when I click on them. This is how I got it to work, ...
4
votes
1answer
305 views

Where is the “Insert > Citation> Bibliographical Reference” Command?

I don't have the command for inserting citations described in the documentation: "Insert > Citation> Bibliographical Reference" is not present in my menus: That's the entire contents of my ...
0
votes
0answers
47 views

Inverting a matrix [duplicate]

Possible Duplicate: Why does MatrixForm affect calculations? I am facing a strange behaviour from Mathematica when asking it to invert the following matrix: ...
0
votes
0answers
72 views

Finding real and imaginary parts [duplicate]

Possible Duplicate: Extract real part of a complex expression better than Re does I have an expression and I would like to find its real and imaginary parts. As a simplification, suppose ...
10
votes
2answers
238 views

MathLink C API: sending a List[] of so far unknown length

I would like to send a set of Mathematica expressions (i.e. not simple types that are easy to represent and temporarily store in C) in a List using the MathLink C ...

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