Questions tagged [code-review]

This tag is intended for the review and improvement of style for already functioning code. It not meant to change the objective of the code.

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614 views

Having trouble translating Matlab fsolve into Mathematica

I searched the site and found that someone said FindRoot is equivalent to fsolve, however, without proper options, ...
821 views

How to check the validity of an option value

I have a user-defined function, func, which takes the following form: func[arg1, arg2, options] Here is the actual code ...
269 views

When computation takes a long time, how to find out if this is normal or if my script contains an error?

I study mechanical engineering and I' working on my first bigger project on Mathematica right now. It's a multibody problem that leads to a system of 4 large equations I'm supposed to solve ...
26 views

Improvement of a method to plot values of a section of a line that moves with time

I have this code which animates a layer of fluid moving on the outside of an ellipse with a moving black point on the cylinder surface itself. I want to plot a line from the origin to the outer layer ...
98 views

How can I map edgeweights from a matrix onto edges along the paths generated by another matrix

Suppose that we have two matrices with identical dimensions: matA and matB. I want to identify a set of pathways using ...
54 views

help with improving my code

I am fairly new to MMA-12 and have written the following code to calculate possible coordinates (for given constraints [see If[]] in the code) and get the ...
485 views

Is this a bug or my mistake?

This: Graph[{1 \[DirectedEdge] 2, 2 \[DirectedEdge] 3, 4 \[DirectedEdge] 1}] AdjacencyMatrix[%] // MatrixForm generates: But, this ...
68 views

How to automize Shannon's Entropy calculation using a MM function

With the following code, I calculate Shannon's Entropy function HH1 for a given matrix mat. ...
63 views

How can I index a function with the type of dataset used

I have the following code which serves my purpose for a single matrix input. For one or two matrices, the operation can be done manually, but I have 65 matrices and ...
43 views

How can I use DeleteMissing[] to delete “complicated rules” from a matrix

The following works as intended: ...
76 views

Solving an equation in integers giving an errormessage

I've the following code: ...
328 views

Brute Force for solving Diophantine equation

I'm trying to solve the following Diophantine equation using Mathematica: $$2^x=5^y+3$$ I have a code,but is very slow. Can we speed up ? ...
59 views

How can I plot a 2D LayeredGraph on a 3D plane with a MMA function

In my previous question, I wanted to plot a 2-dimensional MMA LayeredGraph[...] on a 3-dimensional surface (or plane), and @KGLR answered the question in the ...
132 views

Compute moments, variance, skewness, mean from the PDF of a non standard distribution

I have tried to compute Skewness and variance and moment using the code below, I have tried first to create a distribution from my PDF using the command ...
63 views

69 views

Mathematica only graphs the upper part of my cylinder

I have this code which first is supposed to make random points, draw lines through the points and then make these lines radical axes of cylinders. I have two problems with my code. First, it only ...
1k views

Converting Matlab code to Mathematica [closed]

I have following Matlab code: ...
151 views

Can someone please explain the code from another question

Source: Position of a pattern-matched part of an expression Can someone please explain the following code by Leonid Shifrin. ...
117 views

Dealing with stiffness in solving Mukhanov-Sasaki equation

The code that I wrote is rather long, but I have included the whole code. ...
61 views

I have a working code, but work very slowly. want to improve the code

I have working code which gives the result as expected by me. But the problem is it is taking too much of time to give me those results. I have a determinant function which depends on z1,z2,z3, kt,m, ...
27 views

Relative Chop for Fractions with Trigonometric Terms

I have a fraction, which contains long sums of various terms that might include trigonometric functions in both the numerator and denominator. I want to get rid of the negligible terms. This is my ...
195 views

Animated Lissajous Curves Parametric Plot

I love mathematical GIFs' power to illustrate and communicate math concepts widely. I haven't had much luck with the build-in ListAnimate on MMA Online but ...
64 views

Find and number sublists

I implemented the following routine. array1 = {12, -12, 14, 12, 1, -3, 1, 1, 2, 7, 8, 102, 2, 3, 3, 1, 332, 11, 23, 2, -2, 13, 12, 1, 1, 1, 1, 1, 1, -121, 131}; ...