3
votes
1answer
510 views

Running external pdflatex command and importing the generated PDF document

There have been a couple of questions about incorporating labels and equations that were typeset in $\LaTeX$ into a Mathematica notebook. Ideally, this requires running ...
5
votes
1answer
260 views

Should Row be used in place of StringForm?

I've been using Mathematica for a long time, so I have a habit of using some of the older functions even when newer, better ones have been added to replace them. ...
8
votes
3answers
324 views

Grid without lines, but with dots

I want to build a grid to look like the top-left table shown below, but without an outside frame. Here is what I've tried to do: ...
17
votes
4answers
1k views

Second level depth pure function?

I have the following working construction: Select[ln125, # == Nearest[ln125, 551.748][[1]] &] Here, ln125 is a one ...
6
votes
1answer
255 views

Under what conditions does FinancialData return a ::notent message?

I tried retrieving FinancialData for a few companies but when I tried doing it for NTDOY, I couldn't. As of 25/12/2012, querying ...
7
votes
4answers
769 views

Using MapThread on list of lists

Just a light weight question for learning. If you think this was asked before, please feel free to close it. I am trying to learn MapThread more, and wanted to use ...
7
votes
0answers
386 views

Incomplete implementation of units?

I've been playing around with the new units capability in MMA9 and I'm becoming a bit frustrated with what I perceive as an incomplete implementation of this capability and I'm wondering if there are ...
12
votes
1answer
260 views

Symbolic computations with already assigned variables

For example I have assigned some variables that could defined in terms of each other. Then I for some reason need to derive some formula using this variables. How to show the result of this ...
2
votes
2answers
479 views

Sound data Import Export

Can't regain the data after Export. Create an array of sampled amplitude values: 2. Visualize as sound 3. Save it 4. Get it back 5. ??? ...
1
vote
0answers
142 views

Mathematica does not export Turkish characters in a Graphics expression

When I export the following Graphics expression as a PDF (or EPS) file, the Turkish characters ü and ç do not appear. ...
17
votes
3answers
2k views

Extracting the coordinate of a particular point of interest from a ListPlot

Is there a way to obtain the coordinate of a point of interest in a ListPlot? As an example, I have a list containing many sets of 2D coordinates and the plot ...
6
votes
0answers
111 views

Associating symbol pages with symbols (Workbench)

Normally when you have symbol Abc, WorkBench creates a symbol page named Abc. Then when you make a build, type Abc and then press the F1 key, you are sent to the Abc symbol page. Suppose however ...
4
votes
2answers
2k views

How to create a Table of Tables with indexed variables

I want to use concise code to generate a table of values that list the addition of a set of vectors. What I am looking for is essentially a Table of Tables. I will show here the kind of lists I want, ...
3
votes
1answer
1k views

Solve pair of recurrence relations

[Corrected equations and added simple example] Can you solve a system of (loosely) coupled recurrence relations like this in Mathematica somehow? ...
4
votes
1answer
223 views

Dynamically link cell content in Mathematica?

Is it possible to dynamically link the content of two cells? For example, can I set up a Notebook with two text cells that display the same value, and if the user types in one the other updates, etc.? ...
7
votes
1answer
584 views

How to get full-screen graphics canvas?

Is it possible to create a full-screen graphics without any front end elements like cell brackets and scrollbars? The zero approximation can be ...
3
votes
1answer
2k views

Solving an Integral equation

I would like to solve the equation $$\frac{2}{p}\int_0^1((1-u)^{1-p}+u^{1-p})^{\frac{1}{p}}\text{d}u=42$$ for p numerically. I tried ...
4
votes
1answer
234 views

Rescuing a vertically clipped histogram

I recently ran a rather time intensive calculation and plotted the results in a histogram by simply called Histogram[data]. However, because of a rather serious error on my part, I recently lost my ...
4
votes
2answers
397 views

How can I provide dividers and control item alignment in a Grid?

I make a Grid with multiple Rows and Columns. I want to apply different types of Dividers and Alignment to that Grid. If you ...
8
votes
2answers
727 views

How do I solve this equation?

I want to solve the equation $$ f(f(-1)) = \sqrt{2} + g(f(2)), $$ where $$f(x) = \dfrac{a}{x^2} - 3x + 2, \quad g(x) = a\cdot \sin 2x$$ $a$ is unknown. The solution is $a \approx{-5.81}$. I tried ...
19
votes
1answer
225 views

“With” as part of the “Dynamic Interactivity Language”

I noticed that in Mathematica's Function Navigator With is listed as being part of the "Dynamic Interactivity Language". It is not the first (or even the fourth, ...
5
votes
1answer
313 views

FindMaxValue specifics

I'm using FindMaxValue to study the distribution of maxima of Abs[RiemannSiegelZ[t]] between consecutive values of ...
2
votes
4answers
276 views

How to evaluate this indefinite integrate $\csc(4x)\sin(x)$

I tried to integrate the following integral using Integrate[Sin[x]Csc[4x],x] and I am getting a strange result. $$\frac{1}{8 \sqrt{2}}\left(-2 i ...
15
votes
1answer
398 views

RandomVariate returns values outside the support of a PDF

Bug introduced in 8.0.1 and fixed in 10.2.0 Let $X$ be a random variable with pdf: dist = ProbabilityDistribution[1/(Abs[x]*Log[Abs[x]]^2), {x, -E^-2, E^-2}] ...
32
votes
9answers
11k views

How to create animated snowfall?

Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider: 1) Continuous GIF animations with smallest possible number ...
14
votes
1answer
312 views

Multiple windows in Mathematica help

I'm new in Mathematica, and would like to know how can I open multiple help windows at the same time. It's this possible? I'm using Mac OS. I know it works for link in the help page with right mouse ...
6
votes
1answer
475 views

How do I interpret an error message from DSolve?

I am trying to find non-trivial solutions of the ODE $\lambda u'(x) = u(x+R) - u(x)$ using Mathematica. In particular, I am using the command ...
8
votes
5answers
315 views

How can I find these patterns' signatures?

I think I can explain it best starting with an example. I have the following lists: ...
51
votes
2answers
3k views

Once more on object orientation in Mathematica: does it have to be so hard?

Recently I came across a set of problems which would be solved most easily within an object-oriented approach. I first attempted to solve them by other means, but found the complexity of the code ...
3
votes
1answer
204 views

What is causing a type error when trying to modify Mathematica state from a function linked with LibraryLink

I've managed to reduce my problem to a very simple C program: ...
2
votes
0answers
130 views

Smooth Max and Abs

I'm trying to implement smooth approximations of Max and Abs functions. Moreover I want the functions to map element-wise on tensors. Here's my code. ...
2
votes
1answer
108 views

How do I make an EventHandler non-responsive to MouseMoved after a mouse click?

Consider the following code. After evaluating it, when I move the mouse over the output text, it prints 1, and when I click the mouse on ...
3
votes
0answers
566 views

how to associate a metric for tensor contraction operations?

I see that Version 9 now has some built in tensor support (which was missing back when previously asked How to represent and manipulate abstract indexed vector (or tensor) expressions?). The docs ...
2
votes
1answer
291 views

is it possible to modify BaseStyle of Manipulate dynamically?

I can't decide what is a best color for the background for a Manipulate I am writing. So, I thought since this is Manipulate, why not make this part configurable as well, so one can change the RGB ...
5
votes
4answers
2k views

How to find the sum all even numbers of this sequence?

I have a sequence $(u_{n})$ $$u_1= 1, \quad u_2 = 2, \quad u_3 = 3, \quad u_{n}= -u_{n-3} + 3u _{n-2} +2 u_{n-1}, \quad \forall n \geqslant 4.$$ I want to list the first $20$ terms of this sequence ...
4
votes
2answers
354 views

Pasting external PDF vector graphics without losing ability to export them

Update: Problem persists in version 10.2 on Mac OS X 10.9.5 As in previous versions, Mathematica 9 on Mac OS X (10.7.5 here) still has a problem with pasted PDF ...
2
votes
2answers
331 views

FullSimplify inconsistency

I'm pulling my hair out with this one. I have two complex functions f and g, ρ is real. ...
18
votes
6answers
1k views

How do I make an image “nearly” black and white?

Using the following code, I downloaded an image from the web and adjusted the image to obtain the "negation" of the image: ...
4
votes
2answers
263 views

What causes this strange convergent sum?

N[Sum[1/(x^2 + 1), {x, 1, Infinity}], 5] N[Sum[1/(x^2 + x + 1), {x, 1, Infinity}], 5] 1.0767 0.79815 + 0.*10^-6 I What causes the strange number?
14
votes
3answers
741 views

How can I improve my code for drawing a tree?

This code draws a tree, but it's not in the functional style. ...
13
votes
9answers
6k views

How do I extract a number from a string?

I want to extract the number from an alphanumeric string. This is what I tried: StringTake["thiru3", {6, 6}] The result I got is ...
32
votes
1answer
404 views

Quickly look-up usages, options and attributes of symbols

When I'm writing code in the front-end, I find myself very often looking up the list of options of a symbol over and over again in the documentation center. In most cases you find there a list of ...
0
votes
1answer
218 views

Preventing Grid from resizing when the item height is increased

I created a grid of size 200,200 and placed a button in it of size 200×200. ...
0
votes
1answer
308 views

How to express endogenous variables in terms of exogenous variables?

I have 11 endogenous variables (RD, NR, WR, Q, NQ, R, L, W, NU, C1, C2) and two exogenous variables (EE, K). I'm trying to find $RD = f(EE, K),\, NR = f(EE, K),\, ...,\, C2 = f(EE, K)$. Hence, I ...
4
votes
1answer
148 views

Why are some equal expressions more equal than others?

n1 = 1/3 (2 + (-Sqrt[3] + 2 Sin[(2 π)/9])/(Sqrt[3] Cos[π/9] - Sin[π/9])); n2 = 1/2 + Sin[π/18]/(3 Cos[(2 π)/9] + Sqrt[3] Sin[(2 π)/9]); n3 = 2/3 (1 - Cos[4 π/9]); ...
5
votes
3answers
525 views

How do I find the amount of free space on disk?

I know a workaround, where one calculates sizes of all files and then you subtract this from your default space, but is there any direct way to do it? Simplicity and speed are important. There's the ...
14
votes
2answers
5k views

Is there an option to change the space/distance between tick labels and axes labels for plots?

In an attempt to squeeze more plots and controls into the limited space for a demo UI, I am trying to remove any extra white spaces I see. I am not sure what options to use to reduce the amount of ...
2
votes
2answers
935 views

NDSolve problems of convergence

I have a big function that I have to maximize, so I have to evaluate some equation with thousands of different values of the parameter. But the FindMaximum returns me many errors. I have traced the ...
15
votes
1answer
2k views

Is there a “No Units” (i.e., dimensionless) unit?

I would like to be able to call the Quantity function with a null unit so that it returns the original dimensionless value. For example, ...
22
votes
3answers
1k views

Create an adaptive amount of local variables for error propagation

I intend to write a function which calculates the result and the error for any formula with any amount of variables using the Gauß Error Propagation. The error $\mathrm{d}R$ for a function $R(a,b,c)$ ...

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