7
votes
1answer
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 ...
7
votes
3answers
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 ...
7
votes
2answers
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 ...
7
votes
2answers
195 views

RegionIntersection puzzle

I am using RegionIntersection[] to intersect two rectangles, phrased as Polygon[]s: ...
7
votes
1answer
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 ...
7
votes
1answer
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 $\...
7
votes
2answers
77 views

How to Add a PageBreak menu by MenuSetup.tr

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 ...
7
votes
3answers
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: ...
7
votes
1answer
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 ...
7
votes
1answer
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 : ...
7
votes
4answers
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: ...
7
votes
3answers
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 ...
7
votes
3answers
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 ...
7
votes
3answers
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 ...
7
votes
1answer
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 ...
7
votes
3answers
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 ...
7
votes
2answers
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 ...
7
votes
1answer
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 ...
7
votes
1answer
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 ...
7
votes
3answers
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/...
7
votes
5answers
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 <...
7
votes
2answers
264 views

Programatically adding/retaining comments within a nested list

Is it possible to convert the following list of strings to computable numbers with the comments preserved? ...
7
votes
3answers
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 ...
7
votes
2answers
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 ...
7
votes
1answer
279 views

Can't plot rotated region

I was experimenting with the code from this question when I ran into another problem with regions. ...
7
votes
2answers
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 ...
7
votes
6answers
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 ...
6
votes
1answer
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: ...
6
votes
1answer
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 ...
6
votes
1answer
253 views
6
votes
1answer
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. ...
6
votes
2answers
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: ...
6
votes
2answers
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 ...
6
votes
4answers
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 ...
6
votes
2answers
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 ...
6
votes
3answers
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: ...
6
votes
2answers
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 ...
6
votes
2answers
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), ...
6
votes
2answers
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 ...
6
votes
3answers
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 ...
6
votes
2answers
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. "...
6
votes
3answers
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 ...
6
votes
2answers
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 ...
6
votes
1answer
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 ...
6
votes
1answer
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 ...
6
votes
1answer
538 views

What does MaxStepFraction do?

I find that with NDSolve[...] while solving a partial differential equation, changing the MaxStepFraction from ...
6
votes
4answers
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 <...
6
votes
6answers
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: ...
6
votes
1answer
207 views
6
votes
2answers
740 views

How to combine elements of two matrices?

Given two matrices m1 and m2, e.g.: m1 = {{a1, b1}, {c1, d1}} m2 = {{a2, b2}, {c2, d2}} How can one obtain the following? ...

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