# All Questions

1answer
381 views

### How can I collect data for visualization of quick sort?

I know how to implement quick sort in Mathematica. But I don't know how to get the temp data for visualization, because I used recursion. I want the effect similar to this: ...
2answers
734 views

### Why is Mathematica's expansion of expressions with square roots so slow?

Mathematica expansion of expressions with symbols isn't slow, but with square roots it is very slow. In Maple or Mupad both are fast: with square roots they both take less than a second. Here is an ...
1answer
173 views

### How does DistanceFunction work with images in ClusteringComponents?

Does anyone know the syntax to DistanceFunction? I am trying to define my own function to use with ClusteringComponents; e.g., ...
2answers
142 views

### Does the operating system matter when using Encode[]?

I have a package I want to distribute. I wrote the package in Version 9 under a Mac OS X operating system. I want to Encode[] the package. The end user will ...
8answers
8k views

### How can I improve Mathematica's resolution on a macbook retina display?

Mathematica looks a bit fuzzy on the retina screen, how can I increase the resolution? Here another screenshot showing a direct comparison between the browser and Mathematica
1answer
317 views

### Calculus 1 Related Rates -Total Derivative issues

I'm trying to do part a) of this calculus 1 problem in Mathematica V9: http://tutorial.math.lamar.edu/Classes/CalcI/RelatedRates.aspx#Deriv_Rates_Ex4 Warning noob code below! ...
3answers
487 views

### How to export a header before the data in the result file?

I would like to export a phrase to my result data as a heading. I'm exporting the data correctly with Export["file.dat", table]. But I'm doing several ...
1answer
394 views

### Upvalues, TagSet and UpSet, what's the difference, when should a use each?

Some of the big mysteries of Universe Mathematica for me is the application of UpValues. I know about this question and know the very poor Mathematica documentation on that. I'm very curious to know ...
1answer
186 views

### in v9, backspace causes cell to become section style

In the front end of v9, in any given cell that contains content, if I hit backspace to clear the content until there is nothing left, and then hit backspace one more time, the cell becomes a ...
2answers
203 views

### Hiding certain user-defined functions in front-end autocompletion

I have written an elaborate code that contains a collection of functions for the user and a bunch of auxiliary functions whose existence I would like to hide away from the user. I've written my code ...
2answers
2k views

### Taking class notes with a Mathematica Notebook

Dose anyone take notes in a technical class using a Mathematica notebook? If anyone does, how does it compare to paper and are there useful commands? I have a hard time remembering ctrl/alt/esc ...
0answers
835 views

### Installing Android ADT and Aptana studio plugins into Workbench

My question is a dual to this one. I use Workbench 2.0, but I am now interested in developing some Android Apps and Html projects. In order to do that, I need to install Android ADT and Aptana ...
1answer
161 views

### ListPlot does not recognize my list

I have created a list in Mathematica and for some reason it does not want to Plot my list in pairs {x1,y1}, but instead does {y1,y2} even though I partitioned the list to make it in the correct ...
2answers
90 views

### Detecting operator Set in Assumptions

Here is a typical issue: Simplify[x + y, x = y] produces 2 True. Is there a way to detect operator ...
1answer
463 views

3answers
817 views

### plotting a {{Latitude,Longitude}} list on top of a GIS shapefile

I have a dataset composed of points specified in {Latitude,Longitude} format. Call it latlong for the purposes of this question. It displays properly with ...
0answers
135 views

### Mathematica and Python integration? [duplicate]

Possible Duplicate: Is there a way to run Python from within Mathematica? I do see the latest version has R-link: http://www.wolfram.co.uk/mathematica/new-in-9/built-in-integration-with-r/ ...
2answers
863 views

### DeleteDuplicates not deleting duplicates

It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
1answer
732 views

### NDSolve Differential Equation Error

I am trying to solve the following differential equation- ...
1answer
216 views

### Font Issues: “Like Resource 58” error

I'm running Mathematica 9.0.0 on a Macbook Air with OSX 10.6.8 and I've recently started having issues with the font in the program. All special characters are being replaced with other characters in ...
1answer
630 views

### How to start simulating physical problems?

I'm quite new to Mathematica, I have version 9. I need to use it to simulate some physical problems. I know the equations (like Maxwell's equations and Newton's laws and so on), but I have no real ...
4answers
272 views

### Can the general term my recurrence equations be written with Floor or Mod?

I want to know the formula for the general term of the following recurrence system. I guess it can be written with Floor or Mod. ...
1answer
3k views

### Forcing FindRoot to return only real solutions

FindRoot documentation reports that if the equation and the initial point are reals, the solutions are searched in the real domain. However, in the following case I ...
1answer
122 views

### How to catch the “Preemptive” evaluations from within the main loop?

When trying to make an optimized version of my plotRange fonction I faced a problem of catching the "Preemptive" evaluations ...

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