# All Questions

153 views

### Order/Dependency of Styles in a Stylesheet

How exactly is a custom stylesheet processed? Which style depends on (inherits from) which other style. Consider e.g. setting a font. I would expect that setting the font for "Section" to YY after ...
521 views

### DisplayFormula not working as expected

How do I use the styles "DisplayFormula" and "DisplayFormulaNumbered"? Why is there no margin (or empty space) around the ...
126 views

### How to set Math text size & line spacing [duplicate]

I have chosen different font for text. Unfortunately this font is larger than the standard Times font. So all math symbols (e.g. greek) are now a little too small. If I could just set the FontSize for ...
372 views

### A command for outputting a list of parameter values in a Manipulate interface

I am looking for a command that will output a list of values that correspond to the current parameter values manually set on a particular Manipulate interface. For ...
204 views

### Reference request for logic programming in Mathematica

I'm learning Mathematica(v8) to use it to program formal logic. Can anyone recommend a logic-specific tutorial text? A reference list of logic-related functions would also be very appreciated!
2k views

### How do I work with Root objects?

I want to solve the trigonometric equation : $$(3-\cos 4x )\cdot (\sin x - \cos x ) = 2.$$ I tried Solve[(3 - Cos[4*x])*(Sin[x] - Cos[x]) == 2, x] It returns the ...
951 views

### How to find local minima of a multivariate function with singularity?

I am working on a logistic regression problem which requires minimizing a cost function J[{theta0, theta1, theta2}, X, y] to find the optimal value for fitting ...
274 views

### Use single ListPlot for multiple sets of data (on separate graphs)

This is the code I have working for a single set of data. Is there a way I can structure this to have multiple sets of data? ...
677 views

### How to make a function that evaluates an expression?

I'm trying to make a function where the input is an expression, but somehow it just won't be evaluated. For example, this little function doesn't work: ...
181 views

### Time varying equation plot [duplicate]

Possible Duplicate: How do I use Map for a function with two arguments? I have a function, e.g. $T(x,t) = \exp(-t)\sin(x)$ and I want to plot, on the same, or different graphs, $T$ as a ...
968 views

### Trying to generate a list of data to plot a graph with error bars. Need help creating the looping function

This is the sets of data I want to put into a form which will allow me to plot error bars from the min and max data. ...
595 views

### Thread over list in different levels

I have these two lists, both with the same length in the first dimension: ...
812 views

### Using triangulation

I have been presented with 3 known points and the power densities at those points. I need to use those points to find the location of the actual antenna which is generating the signals. Power ...
626 views

### Rasterized image together with vector-graphics axes

Following some of the questions here on Mathematica Stack Exchange, I am trying to export an image that contains a rasterized object and vector-graphics axes. Here is an example: ...
2k views

### How to create symbol whose name has subscript?

I can do Symbol["foobar"] to create a symbol foobar. How to create a symbol $\theta_1$? ...
323 views

### Why doesn't FindClusters find any clusters in this case?

I am trying to use FindClusters to segment data points into similar numbers but so far I couldn't get it work for this example: ...
356 views

### Syntax Highlighting for Mathematica on a Blog

Every once in a while I want to paste Mathematica code on my blog. When I do, I would like it to be somewhat readable, and it would be nice to have syntax highlighting. So far all my searches have ...
691 views

### How to draw a 2D curve as epilog on a 3D surface plot?

I'd like to draw Plot[Re@Sin[x+I*2], {x, -10, 10}] as an epilog on Plot3D[Re@Sin[x + I*y], {x, -10, 10}, {y, -10, 10}] and ...
947 views

### Symbolic integration in the complex plane

Context While answering this question, I defined (symbolic and numerical) path integrations as follows ...
476 views

### Emulating a button push or a mouse click with Mathematica code

I need to perform a long action with a button. I tried setting the DynamicEvaluationTimeout, but it seems it doesn't work for me. So I want to try using several ...
462 views

### Plugging values into functions

I am very new to Mathematica, and need to know how to plug values into existing functions. For example, Math World supplies the following code for building a truth table of ...
396 views

### Strange Error in Bifurcation Diagram:

I am attempting to plot the bifurcation diagram of the tent map $$f(x):=2\alpha \begin{cases} x, & 0<x<1/2\\ 1-x, &1/2<x<1, \end{cases}$$ i.e., the plot $\alpha$ vs. the limit ...
753 views

### Finding residues of multi-dimensional complex functions

Say I have a function $f$ of $n$ complex variables, $\{ z_i \}_{i=1}^{i=Nc}$. And then I want to contour integrate the expression such that for each $z_i$ its an integration on an unit circle about ...
456 views

### How to solve this exponential inequality?

I want to solve the exponential inequality $$8^x +18^x -2\cdot 27^x>0.$$ I tried Solve[8^x + 18^x - 2*27^x > 0, x] and ...
183 views

### How to efficiently take complement of two big lists?

I have a giant list l1 and some smaller lists l21, l21, ..., ...
421 views

### How do we solve N-Rooks variation using primes?

Using a $p_n$x $p_n$ matrix, how can we solve the N-Rooks problem to find a prime in every row and column? ...
216 views

### How to scale the size of Pane to make it fit a Grid element?

I am wanting to make a Pane scale to fit (if Spacings are zero) a Grid element. ...
789 views

### Better solution than returning a list of 3 values?

I have a function (using SetDelayed) that currently returns 3 values in a list. Later on I use the result of this list along with ...
260 views

### Getting Mathematica.SE reputation data

I'm asking the following on behalf of Mr.Wizard. On StackOverflow I used the old v1.0 SO API and Mathematica to obtain user reputation data. Now we are no longer a tag on StackOverflow and the v2.1 ...
182 views

### Context “Unique to This Notebook” makes variables black even if they're not defined?

I'm trying to use this technique to keep variables separated between different notebooks. It seems to be working fine, except that variables turn black as soon as they are evaluated — any ideas why ...
409 views

### Numerically solving PDE with high precision

I want to numerically solve the PDE $\partial_t u(t,x)=c\partial_x u(t,x)+(mx-l)u(t,x)$ with some initial and boundary conditions and given parameters $c$, $m$ and $l$. Consider the code ...
431 views

### How to convert an output to a graphic that can be selected like a plot?

EDIT: István Zachar informed me of the Rasterize[] command, which does exactly what I need. Danke! I have a self-built function that uses Grid[] to create a table that is more presentation-friendly ...
600 views

### Numerical solution of a differential equation with NIntegrate coefficients

I am trying to solve a linear ODE with a variable coefficient which is given in terms of an integral I can only do numerically. That is, I have an equation of the form  ...
208 views

### How can I independently move vector components (in 2D)?

Here's what may well be a simple problem that I have been having difficulty with: There are two connected vectors, v1 and v2, such that: v1 begins at the origin and and ends at point a1 v2 begins ...
84 views

### What's reliable way of finding declared but undefined functions/symbols in several interrelated packages?

I have many packages some of which use some of others. I have many symbols defined in them. Is there a reliable way of finding declared/exported but undefined functions/symbols in several ...
627 views

### Catching and debugging numerical errors in compiled functions

I have a compiled function (that was created using the second method of this question). Basically it's using a compiled closure. The problem is that for some parameter values it does not evaluate. ...
188 views

### Import[] exception possibly caused by ToString[] behaviour which I cannot explain

Let me just start by pointing out I'm a new StackExchange user as well as a new Mathematica user (started today!) I mention this as a context to my ineptitude :) I am attempting to read through a ...
258 views

### Defining a function that handles Dynamic arguments similar to Built-ins

Firstly please note that I'm using simply Dynamic behavior to illustrate my question, I'm not asking how to move a Disk or make ...
500 views

### How do I plot a system with gain, first-order lag and time delay?

I want to plot the output response of a system with gain, first-order lag and time delay, where the transfer function is tf = 2 Exp[-0.1 s]/(.1 + s) To plot a ...
277 views

### ParallelTable and Precision

I'm using ParallelTable[] to calculate a function over a range of my parameters , ($\omega,\ell$). This seems to be working well (in terms of speed increase) except ...
107 views

### Symbolic FindInstance

I'm wondering if there is any way of doing something like the following: FindInstance[x < y, {x}, Reals] and getting, as a possible return value, ...
293 views

### command to expand quaternion multiplication

Is there are any command to expand quaternion multiplication as below STEP by STEP. Below is equation from my text. I'm self learner and for some reason I can't wrap my head around quaternion ...
499 views

### How can I convert x^2 to x*x?

When I try the following code: a b^2 c /. b c -> e Mathematica gives me: a b^2 c but what I want is: ...
102 views

This works: ...
1k views

### Using a ListDensityPlot to map color onto a ListPlot3D graph

I have a 3 column list of data points. The first two columns correspond to x and y coordinates, with data points creating a surface in the z direction from column 3. This gives me a nice wavy ...
440 views

### Enabled option for slider in Manipulate not updating dynamically

In a Manipulate expression I have a slider control which has the Enabled option ...
1k views

### Plot showing discontinuity where it shouldn't

I was trying to integrate a continuous function with a kink and I did it two ways and both ways the plot of the result shows a discontinuity. I also later want to differentiate the Integrated ...
263 views

### Realtime audio processing using Dynamic

Can I make real time audio processing with Mathematica in the same way I can do with images using Dynamic[CurrentImage[]]. I know that is possible to use ...