5
votes
0answers
44 views

How to use WikiMapia as GeoServer?

I wish to use the Wikimapia map as background in GeoGraphics. According to the Wikimapia Docs, Wikimapia's URL is encoded as follows: An example Wikimapia URL ...
3
votes
2answers
172 views

Drag and Drop Support

Is there a way to effectively get drag and drop so you can drag files onto nbs in Windows? For example similar to the way .bat scripts work. Ideally I would like the script to automatically execute ...
9
votes
2answers
298 views

How to find a specific error message?

Is there a way to find an existing error message in the System` context, that is used for a certain case? I want to include a message in a custom function that ...
1
vote
1answer
31 views

Adding up a list of subscripted elements

I have a list of entries with subscripts. I want to add just the entries. How can I do that in the presence of subscripts? For example: list = {1a, 2b, 3c} And ...
8
votes
4answers
1k views

3D Random Walk with Periodic Boundary Conditions

I am working on a 3D random walk with periodic boundary conditions and have written a program that will do this for me, but it is extremely slow. Does anyone have any suggestions on how I could speed ...
0
votes
2answers
38 views

Running an animation if a certain condition is met using Manipulate

I'm having trouble finding a way to play an animation (inside Manipulate) if a certain condition is met. I'm representing liquid volume with rectangles and if the ...
1
vote
1answer
59 views

Auto Execute Notebook on Open [duplicate]

How might I automatically execute a notebook script on open? For example I would like to a notebook to automatically execute it's cells.
5
votes
3answers
138 views

Turning an expression into a function inside another function

Say I have an expression g=Sin[q]; It is easy to turn it into a function, and to perform manipulations on this function (this and variants of this were discussed ...
11
votes
2answers
609 views

Annoying FrontEnd bugs in Mathematica 10

Bug introduced in 10.0.0 and fixed in 10.0.2 Recently I installed Mathematica 10 on Windows 8 x64 machine. Before that I had a prerelease version of Mathematica 10 installed on my laptop. I ...
1
vote
1answer
24 views

Find all synonyms of word X that rhyme with word Y

Given two words x and y, I'd like to find the set of all words that rhyme with x and are synonymous with y. Is this possible with WordData or ...
4
votes
0answers
17 views

Spurious infinite limit of integration message in NIntegrate

NIntegrate returns an error complaining that ComplexInfinity is an invalid limit of integration when passed exact input but not ...
1
vote
1answer
35 views
5
votes
2answers
98 views

BarLegend using Function that uses Blend

Bug introduced in 10.0 and fixed in 10.1 I'm sorry if this is a duplicate, but I don't even know how to look for it. I had this line of code that worked on a Notebook I wrote on Mathematica 9.0: ...
3
votes
2answers
104 views

Even with Evaluate[], Mathematica is plotting everything in the same color

The code evals[x_?NumericQ] := Eigenvalues[{{x^2, 2 x}, {x, 3 x^2}}]; Plot[Evaluate[evals[x]], {x, -1, 1}] gives both eigenvalues in the same color. I thought ...
21
votes
1answer
540 views

Excessive memory use by Mathematica kernel in 10.0.2 after executing simple commands

Bug introduced in 10.0 and fixed in 10.1 Warning: the code below may hang your system if you have the Suggestions Bar enabled in Mathematica < 10.1. When issuing the following simple ...
0
votes
0answers
19 views

JSON Expandable/Collapsible Fields with OpenerView

When you have a deeply nested hierarchical JSON structure, tools like JSON Editor Online help a lot to get an overview of the structured data at various levels. In this way you control the ...
5
votes
0answers
59 views

Problems with StateSpaceModel in v10.2

Bug introduced in 10.0.2 and persisting through 10.2 or later I don't know if this is a bug, or if just something changed I can't figure out. Take the following examples: ...
4
votes
2answers
62 views

Is there a way for accuracy backtick notation to accept variable inputs?

Backtick notation uses 1.0``20 to give 1 with 20 places of accuracy after the decimal point. But what I want is ...
0
votes
1answer
86 views

How can I produce an animation in a WPC notebook? [on hold]

I want to display an animated Sin curve in a Wolfram Programming Cloud notebook. I tried the docs' example for Animate ...
1
vote
1answer
39 views

Adding a fading color only to 3D curves going outside a cylinder

I'm having a problem with color shades on multi curves drawn with the Mathematica 7.0 code below. All the curves with both their endpoints inside the unit cylinder (green circle on the picture below) ...
1
vote
0answers
21 views

Why is assoc[“a”] =. different from assoc[[“a”]] =.?

Accessing parts of an Association can be done either using Part or the [] extracting ...
1
vote
1answer
73 views

Is it possible to find the size of a variable in a notebook?

I have a fairly large a list of matrices matsLst, which takes about 15 minutes to compute (but computes successfully each time). I can test in the notebook that ...
2
votes
0answers
13 views

Choosing appropriate WorkingPrecision when solving numerical system of equations

Consider a linear system of equations, which is conveniently written as A.x=b. The matrix A has dimensions ...
4
votes
0answers
22 views

Exporting a Large Graphic Output Uncrops the Image

I want to export an image exactly as it is shown in the notebook, but when I specify a high image resolution, the image saved to disk does not match what is shown in the notebook (the image saved ...
1
vote
2answers
48 views

How to compare and remove x-coordinates (and the associated y-coordinates) that are less than previous x-coordinates?

I am using Mathematica version 9.0 and am trying to compare and remove x-coordinates, and the associated y-coordinate, that are less than previous x-coordinates. Below is an example using sample data. ...
8
votes
1answer
119 views

How to make a Nebulabrot?

A Nebulabrot is a generalization of the Buddhabrot, a fractal rendering technique related to the Mandelbrot set that sort of looks like a meditating buddha. The Buddhabrot rendering technique was ...
4
votes
0answers
65 views

How can I avoid these defects in ContourPlot3D output on WPC?

What I do: ContourPlot3D[-x^2/17.07 + y^2 + z^2 == 1 - x^17.07, {x, -2, 2}, {y, -2, 2}, {z, -2, 2}, Mesh -> None, PlotPoints -> 16] What I get: ...
2
votes
2answers
49 views

Reading from a file: complex number with small imaginary part

I'm trying to read a matrix from the next file: 1+1e-18i 24 42 23.43e-23i using u=Import["file.dat","Table"]; and then find, ...
26
votes
2answers
2k views

Upgrade to Windows 10

Can users of Mathematica on Windows 7 or Windows 8/8.1 upgrade their computers to Windows 10 – a process that began today? Does Mathematica work? Are all the settings, licenses, access to files and ...
6
votes
7answers
343 views

Convert array from {{…}} to “[[…]]”

I have made this function: conv01 = Map["["<>StringJoin@@Riffle[#,","]<>"]"&,Map[ToString,#,{2}],{0,1}]& to convert: ...
37
votes
8answers
9k views

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

Mathematica 9.0 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
2
votes
3answers
69 views

Interpreting Results of Repeated Measures - Shift calculation in plots

What would be a more accurate method to calculate the shift in waveform (waveform drift) from a collection of 20 or more data plots. Current method, Plot all using Show and see if there is some ...
13
votes
1answer
301 views

BUG: AssociationMap loses definition

Bug introduced in 10.0.0 and fixed in 10.1.0. I'm facing a strange behavior of AssociationMap. With a fresh Kernel session: ...
7
votes
1answer
192 views

Linux: Mathematica crashes when clicking documentation links very fast

Bug introduced in 10.0.1 or earlier and fixed in 10.1.0 Can someone confirm the following behavior: Open a new Mathematica and go to the documentation. Navigate to any reference page (I used ...
9
votes
1answer
119 views

Bug in GeneratingFunction?

Bug introduced in 7.0 and fixed in 9.0.0 According to the documentation GeneratingFunction[a[n],n,x]==Sum[a[n]x^n,{n,0,Infinity}] However, for $a_n=1/(n+2)$ I ...
15
votes
1answer
415 views

Why does LogLinearPlot sample its argument outside the specified domain?

Bug introduced in 6.0 and fixed in 9.0.0 I experience a weird bug in the function LogLinearPlot. If the input is an interpolation function, such as the one ...
5
votes
2answers
102 views

How to use ForAll to prove things about functions?

Suppose I first declare: $Assumptions = ForAll[{a,b}, b > a, f[b] > f[a]] I (wrongly, as it turns out) assume that that this would cause ...
3
votes
1answer
64 views

Simple minimization not evaluating

I tried to solve a rather simple optimization problem, which Mathematica apparently cannot handle. A minimal example is the following: ...
8
votes
1answer
120 views

Kernel Crash while using “ValuesOnGrid” method of InterpolatingFunction

Bug introduced in 10.0.0 and fixed in 10.2.0 I was experiencing some kernel crash while using "ValuesOnGrid" method of an ...
10
votes
1answer
493 views

GeoDirection and GeoDistance Memory Leaks: How to Recover the Memory?

Bug introduced in 7.0 and fixed in 9.0.0 The functions GeoDirection and GeoDistance have memory leaks. To see this, run the example functions below and watch as the Physical Memory Available in ...
1
vote
0answers
24 views

Evaluating Real and Imaginary parts in a dispersion equation via ContourPlot

I am attempting to solve a dispersion equation which has real and imaginary components. I do this by using ContourPlot with Evaluate; however the solution only gives Real values. I got around it by ...
3
votes
1answer
84 views

Removing the background color from BarChart3D plot

I'm trying to make a 3D bar chart plot with transparent faces on the sides, but for some reason it's very hard to remove them (or to make them transparent at least). I tried looking through the ...
1
vote
0answers
42 views

Simplest use of transpose given a vector and a matrix [on hold]

Suppose that I have: x = {1, 1}/Norm[{1, 1}]; A = {{1, 2}, {2, 1}}; What is the simplest way of calculating $x^T A\ x$? And are there symbols on any of the ...
2
votes
1answer
55 views

Replace parts of nested lists

I have list of stock data as follows: lis1= {{{1992/10/12, 126.946, AEX}, {1992/10/13, 127.85, AEX}}, {{1992/10/12, 88.487, AFLI},{1992/10/13, 91.825, AFLI}}} ...
13
votes
2answers
782 views

How can one define an infix operator with an arbitrary unicode character?

You can setup "UsefulFunction[a, b]" to use custom infix notation "a [LeftRightArrow] b" as follows: ...
-2
votes
4answers
82 views

Converting an expression to function

I have the following problem. I current can automatically create the variable positionPayload, for instance: ...
7
votes
2answers
238 views

HoldForm[Operator ##] on some list

Recently in response to this question Mr.Wizard suggested an unusual way to summing numbers. This doesn't seem to be documented. ...
5
votes
1answer
41 views

How to simultaneously extract contourvalues and contourline?

Given a contour plot, plt=ContourPlot[Sin[x y],{x,-1,1},{y,-1,1}] I can extract the values of the contour lines using, ...
0
votes
0answers
34 views

Piping StandardForm from within GUI

I am working on a GUI project where I need to pipe a string I constructed in Mathematica into an external program. For example ...
-1
votes
0answers
27 views

Importing only some values from a file [on hold]

I use Mathematica and I have many values (x, y, z, ed, dx, E, ...) in a file. I want to import the values of x, y, z, and no others into another file, and then draw these values x, y, z. How can I do ...

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