10
votes
3answers
101 views

How to limit number of user-defined messages issued per evaluation

I have written code such that if it runs into a particular function, a warning message is issued. However, it is common for the program to call this function several times in a single evaluation, but ...
10
votes
2answers
328 views

Hatched Filling for ListPlot

I am plotting to data curves using ListLinePlot. I like the look of Filling, but this is going to be printed, so I want something both black and white friendly, but giving more definition and ...
10
votes
3answers
524 views

How to use legends from PlotLegends in LevelScheme?

I've been attempting to find efficient ways to generate graphics with legends for export, and have been working with both LevelScheme and the new (to v9) ...
10
votes
1answer
1k views

What is the full list of all font families?

I'm having trouble finding a complete list of the FontFamily strings that mathematica supports.
10
votes
1answer
1k views

How to work around Mathematica hanging when showing a large SparseArray?

Note: This is fixed in 9.0.1. In Mathematica 9, if I display any large SparseArray object in the default way (which looks something like ...
10
votes
1answer
594 views

How to get zeroth-order (piecewise constant) interpolation of scattered data?

Given a collection of scattered data points in 2D and associated function values, data = RandomReal[1, {100, 3}]; we can get a piecewise linear interpolating ...
10
votes
2answers
3k views

Use different ColorFunction for each function plotted

When plotting two curves on one plot, you can specify different colors for each function: Plot[{Sin@x, Cos@x}, {x, 0, 4π}, PlotStyle -> {Red, Blue}] To ...
10
votes
2answers
232 views

How to extract a specific element from EXIF photographic metadata?

It's now possible to import photographs into Mathematica and import the EXIF data at the same time: i = Import["ExampleData/coneflower.jpg", "ImageWithExif"] ...
10
votes
3answers
735 views

How can I type left (sub)superscript?

I want to type in my variable next to its plot and I'm typing the text in using Inset. However my variable has superscripts to the left. Say it looks like this: $ ...
10
votes
2answers
664 views

Detecting edge/region in contour plot

I am interested in improving this plot: which I produced with the following command: ...
10
votes
4answers
423 views

Building a tree

Given a list of word characters, such as this one, I'd like to build a tree, similar to this makeTree function, but with the tree in a different format. So, for an input such as ...
10
votes
1answer
343 views

How can I style text like in the documentation?

I'm writing an article, and I really like this style that you get when you type ?AnyFunction. Is it possible to achieve this?
9
votes
3answers
428 views

Find intersection points with V10

My question departs from this one: Find intersection of pairs of straight lines but now I want to find the points with the new V10 Region-functions. ...
9
votes
1answer
150 views

In version 10 EvaluationCompletionAction “ShowTiming” no longer gives useful output; any solutions?

Bug introduced in 10.0.0, fixed in 10.0.2 In version 10 using this Front End option no longer gives useful output: ...
9
votes
2answers
260 views

How to change the appearance of a Cell GroupOpener?

I would like to change the Cell GroupOpener appearance. In the present Mathematica design it is too small and can be missed by a reader unfamiliar with Mma. I know, how to change its color through ...
9
votes
2answers
221 views

Mathematica: How to create a function that returns a property similar to how LinearModelFit works?

I'm trying to write a custom function in Mathematica, myFunc[x]. I want to be able to define properties of the function so that the user can call ...
9
votes
2answers
243 views

ScheduledTask with scoped variables. Working with timed evaluation

I guess I have to try harder and focus more but timed evaluation always frustrates me. I will show the issue on simple example of delayed trigger. ...
9
votes
4answers
423 views

Graphics can't be live and editable

Is there a way to construct an interface so that the Code and the Graphics remain in sync? For example I would like to be able to drag/drop and move around different shapes in Graphic while seeing ...
9
votes
4answers
1k views

NMinimize usage

I would like to minimize functions including the following. NMinimize[{1 - (1 - 1/n)^x - x/n, n > x, x > 1}, {n, x}] However Mathematica complains about ...
9
votes
3answers
227 views

Using LinkSnooper for monitoring the communication with an installable MathLink program

How can I monitor the communication between an installable MathLink program and the kernel? Can LinkSnooper do this?
9
votes
2answers
1k views

How to write data from Mathematica to an existing formated Excel file?

I have a sheet in an Excel file already formated: different colors, fonts, columns width and cells styles. I want to fill-out values from Mathematica into specific cells of that sheets, or use that ...
9
votes
1answer
351 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 ...
9
votes
2answers
614 views

Alternative Math Font

Are there other fonts that can be used for mathematical symbols? I have noticed, that choosing another font (via Stylesheet) does not change the math font (e.g. for greek symbols). Symbols will just ...
9
votes
3answers
1k views

How to make a tight crop of a 3d plot?

I like Mathematica, but it's syntax baffles me. I am trying to figure out how to minimize the whitespace around a graphic. For example, ...
9
votes
4answers
647 views

Using Position (which requires a pattern) in the same manner as Select (which requires a criterion)

I am using Mathematica7. I have a list of lists (creatively named list in the following sample code) containing data. I would like to find the positions of the ...
9
votes
1answer
338 views

Speed up DensityHistogram rendering (display)

When I tried to present some pre-calculated density histograms inside Manipulate I noticed that the display of DensityHistogram is extremely slow. Here is a simple ...
8
votes
1answer
263 views

Moving polygon on path curve to create 3D shape

How can I move some polygon list = {{0, 0}, {0, 15}, {7, 13}, {2, 13}, {2, 5}, {5, 5}, {5, 3}, {2,3}, {2, 0}}; Graphics[{Black, Polygon[list]}] so it follow some ...
8
votes
3answers
222 views

Disable templates for user defined functions with usages

It appears that fixing the template system is low on Wolfram Research's priority list. For my package, I have defined Usage info for my functions involving lots of ...
8
votes
1answer
468 views

How to combine more locations (GPS coordinates inside one city) with Google map?

I have a list of GPS coordinates.E.g. GPSList = {{47.680800, 17.626446}, {47.681078, 17.627283}, {47.682759, 17.631810}}; I would like to crate a Google Map ...
8
votes
2answers
907 views

What is the best distribution for my histogram?

I defined a security bound for a random walk (cube with 15 lengh) and i have this code to obtain a sample of the random times at which the random walk crosses the boundary for the first time: ...
8
votes
2answers
237 views

Type conversion: LibraryLink mint vs. MathLink integer type

Assume the following situation: I have a WolframLibrary function which gets as parameter an integer tensor (which is for simplicity of rank 1) and the function should return an integer list through ...
8
votes
3answers
766 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 ...
8
votes
0answers
192 views

Break[] inside ColorFunction

f[x_?NumericQ]:= (Do[Break[],{i,1,2}];x) Plot[x,{x,0,1},ColorFunction->(ColorData["Rainbow"][f[#]]&)] Break::nofwd: No enclosing For, While, or Do found ...
8
votes
2answers
3k views

Import selected columns from a tab delimited text file

I have a very huge file (1GB) from which I desire to import only the 5th column. It is a tab delimited text file with a .txt extension. Can you please help me with ...
8
votes
1answer
263 views

What is the complete list of valid FrontEnd Packet types?

In response to my question How can I get the unchanged Box form of an arbitrary expression? John Fultz answered with a method using the hilariously named ...
8
votes
4answers
324 views

Can I stop edges in graphs from drawing on top of the vertices?

Consider the following testadj = RandomVariate[BernoulliDistribution[0.15], {50, 50}]; AdjacencyGraph[testadj, VertexSize -> Large] The nodes are almost ...
8
votes
2answers
476 views

Opening new notebooks with a non-default window size

I'd like to set Mathematica (8.0.4.0) up so it opens new notebooks with the "NaturalColor" stylesheet and with a window size like {800,770}. I tried to change ...
7
votes
4answers
631 views

How many times do the two given curves intersect at the origin?

I'm reading/studying on my own a book about algebraic curves. I'm trying to find a way for Mathematica help me with the following (the book, ISBN: 038731802X, allows me to use any CAS / program. ...
7
votes
1answer
389 views

How to visualize the structure of this dynamic programming code

I am studying Mr. Wizard's answer to this question which tries to identify elementary circles in a graph. That answer uses dynamic programming technique to simplify the code. The underlying guideline ...
7
votes
3answers
563 views

What is the right way to construct DynamicModule

When I'm creating DynamicModules for CDF purposes I'm usualy basing on my experience with that, particular goal and content rather than on deep insight. I want to ...
7
votes
4answers
643 views

How make f[{x,y}] evaluate as f[x,y]?

I frequently encounter the situation where I have a function of two real variables defined, e.g.: f[x_, y_] := 9 - x^2 - y^2 But then I need to feed into ...
7
votes
2answers
287 views

Solving variant of the knapsack/money-changing problem

I'm trying to solve a variant of the knapsack/changing money problem where I have a set of a few numbers and I'm trying to find the linear (integer) combinations of them which are close to a given ...
7
votes
1answer
292 views

Launching remote slave kernels on HPC causes slow down

I had a post earlier regarding how I can run Mathematica at a HPC cluster (running PBSpro) by having a single MathKernel launch ...
7
votes
1answer
271 views

Compiling Map over expression that yields a ragged array

I'm trying to speed up a function that looks in the neighborhood of each 3D point in a large dataset and finds all the points within 1 unit in each direction, x, y, z. I've started by using ...
7
votes
1answer
382 views

Converting XMLElement objects to plain text

Short version: How can I convert an XMLElement that represents part of a HTML document to plain text? Long version: The more general problem is extracting ...
7
votes
3answers
3k views

Plotting contours plot for f(x,y,z)=c

I have the following question: I have a file that has structure: x1 y1 z1 f1 x2 y2 z2 f2 ... xn yn zn fn I can easily visualize it with Mathematica using ...
7
votes
2answers
231 views

Moving controls from Manipulate to a Palette ( or similar GUI object )

Consider the following snippet as a reference. ...
7
votes
2answers
5k views

Does Mathematica implement the fast Fourier transform?

Is there a fast Fourier transform in Mathematica? Although looking in the help I could not find one. I am looking to implement the equivalent of fft in MATLAB.
6
votes
5answers
566 views

What is the best way to draw a shaded table?

I'm trying to format a raster-style table with row and column headings and in which each cell is shaded according to the value in the cell, and the value of the cell is displayed in as text in a ...
6
votes
6answers
277 views

One to Many Lists Merge

I have two lists: ...

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