# All Questions

364 views

### Is there a built-in function to do binary search?

Is there a built-in function to do binary search? Say, given a list (sorted) and a number, find the position which keeps the listed sorted when the number is inserted. I know that ...
336 views

### Why can't D[] be used in place here? [duplicate]

Possible Duplicate: General::ivar is not a valid variable when plotting - what actually causes this and how to avoid it? Beginner question: Why can't I use ...
440 views

### Why do I get empty graph when adding 'Abs' function?

Can someone be so nice to provide some help for this particular situation? I try to plot a graph of a derivative which contains modulus. Without it the graph is drawn correctly: But when I wrap the ...
195 views

### RegionIntersection puzzle

I am using RegionIntersection[] to intersect two rectangles, phrased as Polygon[]s: ...
1k views

### Grain(Particle) Size Distribution (PSD) Analysis with Mathematica

I would like to do an analysis of the grain size distribution of a Monte Carlo Grain Growth simulation I implemented based on the nice example by Rituraj Nandan (see Link). The result of this ...
345 views

### Series expansion for small ratio of variables

I have a messy expression of variables that I would like to simplify under the assumption that certain ratios of the variables are small. For example, consider $\sqrt{x+y}\;$ expanded for small \$\...
77 views

In 1998 there was a discussion on comp.soft-sys.math.mathematica how to add am PageBreak menu to Mathematica. I used the recipe from there for very long time (in fact, I used Mathematica 4 till ...
1k views

### How to rotate TickMarks in DateListPlot?

Is there a way to rotate TickMarks in DateListPlot to avoid overlap, eg: Part of the code used to generate this is: ...
80 views

### How to create permanent intra-notebook links [duplicate]

I'm trying to create a documentation notebook for a package and have entries which reference other entries. I'd like to include the hyperlinks in text formatted cells so that when a reader clicks on ...
2k views

### How can I get better control over StreamPlot?

I'm having some difficulties with the command StreamPlot in Mathematica 7.0. Here's the basic plots I'm doing : ...
870 views

### How do I display an expression with negative powers?

How do I display an expression with negative powers? Mathematica seems to always invert a term with a negative rational power. None of the following work: ...
838 views

### How to fix this memory leak

I am using halirutan's code in this thread to unflatten a list. It works very well but the problem is that the Module's local function f is not deleted when the ...
175 views

### BarLegend can't make spaced contours when contours number>11

According to Document of BarLegend,BarLegend will select equally spaced contours: BarLegend[cf,contours] generates a legend that identifies color ranges from the color function cf based on the ...
788 views

### Color function doesn't span the whole color range in MatrixPlot

In matrix visualization, for instance, MatrixPlot[{{1, 2}, {3, 4}}, PlotRangePadding -> 0, ColorFunction -> "Rainbow"] the color map does not cover the ...
407 views

### How to make the docked cell and the navigation toolbar in the Slide Show?

I have a notebook with a docked cell displaying a banner with some graphics. When I convert this notebook to the Slide Show the banner is nicely displayed on each slide. But the Navigation Toolbar is ...
2k views

### Failed to connect remote Mathematica kernel using J/Link

I'm trying to connect to a remote Mathematica 8 kernel (on a Windows machine) using J/Link. On the client machine, I put the JLinkNativeLibrary.dll file in ...
303 views

### Generate cyclic list from a list

Given a list (for example, {3, 5}) I would like to make a function genCyclic[n_, list_] which generates a cyclic patterns of ...
523 views

### Export to PDF on OS X, font missing on Windows

Here is another problem with Mathematica plots and PDF. I have Mathematica 9.0.1 on Mac OS X. I want to export my plots to PDF to include them in a LaTeX document. If I export the plot with the ...
278 views

### NMinimize go out of bounds on some linear constraints

I'm trying to minimize a non-linear function of four variables with some linear constraints. NMinimize on Mathematica 8 seems to go out of bounds on some constraints giving complex values of the ...
349 views

### Appending and Prepending columns to a dataset in 10.0.2.0

fixed in 10.1 (windows) I just experience a problem in prepending columns to a dataset. I did this a hundred times in 10.0.1.0 - no problems. Now it seems as if it is only possible to append/...
274 views

### How to write an operator that acts on pure function (to give another pure function)

I would like to write an operator oper that acts on a pure function f with an undetermined number of arguments, with the syntax <...
264 views

Is it possible to convert the following list of strings to computable numbers with the comments preserved? ...
358 views

### How to efficiently get breakpoints of piecewise functions

Setting. Imagine that we have several arbitrary linear functions in 2D that can be changed manually (say, slopes are parameters). Their Min (or ...
960 views

### How to plot BarChart with error bars on logarithmic scale in Mathematica 9?

I'm quite new in Mathematica, and I would like to ask you to consider the next case: I need to plot bar chart with error bars on logarithmic scale. From Wolfram site I took the function which allows ...
279 views

### Can't plot rotated region

I was experimenting with the code from this question when I ran into another problem with regions. ...
922 views

### Cropped pdf file after export

I have plot generated by Plot[] function that I want to export to pdf file. The problem is that Export[] function somehow cuts a ...
215 views

### How to join held Lists?

Let's say I have a = Hold@{2+2} b = Hold@{4+4} How can I get Hold@{2+2,4+4} ie join the two held lists ? More ...
737 views

### Evaluate while external command is being run [duplicate]

Possible Duplicate: Computing Many Slow I/O Operations I'm launching an external command with the Mathematica front end that takes two arguments: ...
2k views

### MathKernel.exe capped to use only 13% of CPU?

I am using a Windows machine with 8 cores. No other process than Mathematica 8 is using CPU time right now - still the MathKernel.exe CPU usage does not go beyond 13%. My current computation takes ...
253 views

### Complicated symbolic coefficient slows down equation solving

Here's a simple example for Solve: ...
554 views

### Removing gutter shadows from scanned pages

I am new to image processing, and I was hoping someone might set me in the right direction. I am trying to create a simple toolkit for personal use for digitizing scanned book images into a database. ...
2k views

### How to draw confidence ellipse from a covariance matrix?

I am studying a two-dimensional dataset, whose mean vector and covariance matrix are the following: ...
217 views

### Operate on several lists to create one list

How do you put corresponding values from different lists together according to some operation? E.g. I have three lists giving the velocity in the x, y and z direction respectively. I'd like create ...
640 views

### Random sampling of multiple integers with constant sum

I want to build a model of 40 geological layers, assuming each layer has equal chance to be one of the four types of rocks and the four types of rocks have equal chance to appear in any layer. The ...
522 views

### Monochrome PNG (and GIF) Export

Is there a way to Export expressions to a monochrome PNG? I have tried the ColorQuantize function which is mentioned in ...
305 views

### Scope within Context

To define some package-wide functions/variables, what approach is recommended? I tried to use contexts with the Begin function, but this failed: ...
397 views

### Is it possible to induce Mathematica to chop off parts of Graphics objects that exist outside of a Frame?

I am running Mathematica 7. In a Graphics environment I am setting Frame -> True (and using ...
452 views

### Variant of the cutting-stock problem in Mathematica

I'm pretty new to Mathematica and am trying to learn to solve problems in a functional way. The problem I was solving was to list the ways in which I could sum elements from a list (with repetitions), ...
164 views

### Choppy curves with Manipulate [duplicate]

While manipulating the slider in Manipulate[], I experience choppy curves. These do however render correctly after letting go of the slider. The same phenomenon occurs when pressing the + or - button ...
296 views

### How can I stop Mathematica from re-arranging formulae in TraditionalForm?

Let's say I have a sample formula, for example (Abs[x]/(-(2 - \[Kappa]) - 5))/(Binomial[a, b]/4) or something like that. I can of course typeset it to a limited ...
235 views

### Mathematica-exported PDFs placed in Illustrator documents keep disappearing

This question is regarding interoperability between Adobe Illustrator and Mathematica. Illustrator has a File → Place... function which can insert complete figures inside Illustrator documents. "...
382 views

### HoldFirst and inserting additional options into a Grid of Graphics

This is related to my earlier question, but is specific to an issue I have encountered with the use of the HoldFirst First, let's create some fake data for ...
241 views

### Can individual locators in LocatorPane be temporarily disabled?

This follows up on another question about the sensitivity of Locators in a a LocatorPane. I would like to be able to enable/disable individual locators in a LocatorPane. In the simplified version of ...
83 views

### Is there a keybinding for absolute value?

Is there a keyboard shortcut or esc-sequence for typing in the absolute value bars into input cells? I know that if you do, Abs[-4] // TraditionalForm and copy ...
165 views

### How to let output and message be print to two separate external files?

How to let output and message be print to two separate external files? Also, I'd like the content print out to have similar look as when it's print inside the notebook, i.e. it should be in ...
538 views

### What does MaxStepFraction do?

I find that with NDSolve[...] while solving a partial differential equation, changing the MaxStepFraction from ...
381 views

### What is shorthand way of Reap list that may be empty because of zero Sow

Sometimes because of conditionals, you cannot guarantee that Sow will be called at least once. Reap[Sow[1]][[2,1]] results in <...
365 views

### Sort a list of coordinates by frequency from first component of each coordinate

The situation is that I have a List like this: ...