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1answer
44 views

Why does one Monitor expression work while another fails?

I have a (somewhat involved) function f[x?NumericQ, y?NumericQ] and for some reason it behaves differently when given a Table ...
2
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0answers
121 views

correct usage of ParallelTable

I am trying to parallelize my script. Here is a MWE of how I have done it: ...
1
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0answers
79 views

Parallel numerically integrated function can't be plotted

I've been working on a problem where I need to integrate a function numerically. The function is quite complex and it takes almost an hour for Mathematica to make a plot. To speed the process up I ...
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0answers
77 views

Generating a variable size table one element at a time

I can produce a variable size list of strings like AACBBAABC with this code: ...
1
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0answers
125 views

Making simultaneous equation solving more efficient

I am trying to solve a system of several simultaneous equations that have been generated by a series of modules and functions, using this module: ...
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0answers
80 views

How to be faster at making a frequency list of increasing steps

I want to find propabilities of having a sequence in a list, by using frequencies. The case is that you will bet on an increase when the last event had an increased and bet on derease when the last ...
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0answers
51 views

Maximum and mean of a multi-variate function over a restricted lattice

I have a function Q, and I want to find the maximum value, the corresponding arguments for the maximum value, and the mean over a certain range of arguments. I ...
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0answers
33 views

noninteger indices for tables

Is it bad programming practice to use non-integer values to label data tables? For example, Do[data[dBx, Bz] = Table[{x,f[dBx,Bz]}, {dBx, .1, .5, .05}, {Bz, .4, 1.5, .1}] instead of introducing ...
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0answers
62 views

scatterplot from 3d table

I am using this code: ...
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0answers
57 views

How to compute variances from a matrix/table

I have created a matrix/table with an imported dataset. I want to know what the variance is for 3 values at a time but across 68 columns. I would like to do this in an automated way rather than 1 set ...
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0answers
395 views

Fastest way to create a NxNxNxN dimensional matrix

I have a function that outputs a complex number Func[x_,y_]:= blah blah; I have constructed a table of all possible values of this function. ...
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0answers
122 views

Savitzky-golay filter

How to use Savitzky-golay filter on csv file? I have file.csv in this format: 0.1,1.6,2.8,0 0.2,1.2,2.3,1 0.7,1.5,2.4,2 0.6,1.2,2.7,3 0.4,1.4,2.9,4 0.3,1.3,2.5,5 ...
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0answers
64 views

Output solutions from large amount of multiple parameters to external files?

I have some code that solves an ugly PDE by using the results of another, and outputs the value of the solution between a range $mic \leq r \leq r_{o}$. It looks something like this ...
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0answers
67 views

Widget - GUI help

I was wondering if someone could explain me the code written below (example File Dialog from mathematica). Especially the part with returnValueand ...
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0answers
146 views

Efficiently tabulating system of coupled ODEs for NDSolve

I am solving a (large) system of second order coupled nonlinear ODEs. I have been increasing the number of dependent variables present in the system slowly, to converge on more physically realistic ...
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0answers
64 views

GUIKit`Private`Script appended to expression when I try to update list through Table Widget

I am trying to update a list every time a value in a Table Widget is changed. My list has to be made from expressions and not strings since I am doing some symbolic calculations each time the table ...