7
votes
Accepted
Difficulty to Solve the Generalized Wave Equation
Here is the analytical solution. It now matches the numerical solution.
Few things were corrected including normalization. See Hermite_polynomials for references used to find correct weight. The one ...
- 127k
5
votes
Accepted
0-1 test or Lyapunov exponent, to prove my below system is chaotic?
I'll assume you're using the LyapunovExponents function I wrote here. The first step is to make sure you're starting on the attractor. In your case, it seems that ...
- 19k
3
votes
Accepted
Axes labels as multiples of $\tau=2\pi$
This does not sound right to me:
"... as Mathematica seems to be hard-wired to label the axis with multiples of 𝜋"
You should always share code of what you have tried so people can find ...
- 70k
2
votes
Accepted
2
votes
TimelinePlot with many intervals becomes white
I was not intending to answer my own question, but I found a way to solve this good enough to be shared.
The blanking element can be seen easily using the ...
- 7,848
2
votes
Mesh as list of seperated lines
lines = Cases[Normal[test], Line[pts_] :> Line[pts], -1]
Or maybe need to remove the boundary.
...
- 52.2k
2
votes
Accepted
Absolute value of $1$ in PlotLegends in ComplexPlot
Looking at the source code of ComplexPlot, it seems that the ticks are hardcoded in System`ComplexPlotsDump`parseShadingLegend, ...
- 12.3k
2
votes
Accepted
1
vote
Adjust graphs inside GraphicsRow to be the same scale?
The trick seems to be to transfer the size as a variable to the internal code of execution
...
- 155
1
vote
Plot Generalized Heat Equation
Here is 3D plot, analytical vs. numerical, using solution given in Analytical Solution in Generalized Heat Equation
Code
...
- 127k
1
vote
Accepted
How to compare the numerical with the analytical solution of PDE?
Do not use the same symbol for the analytical and numerical solution. Then move the "Clear" to the beginning, otherwise you will clear the numerical solution. Then store a function in "...
- 37.7k
1
vote
ContourPlot has weird wavy line
The problem is solved after I add PlotPoints -> 300 thanks to @thorimur.
Perhaps the problem is due to the interpolation function g[a] or due to the plotting ...
- 21
1
vote
Accepted
Plot elements of a time dependent matrix
Some basics first:
Try to see if you can extract the matrix element to begin with.
You can achieve this by using Part. The most common notation is ...
- 1,019
1
vote
Accepted
Plot a Time Series with a count of the number of times a particular date appears
Assuming the data are similar to the list presented in the question, it could be as simple as
process = Tally/*Transpose/*Reverse/*Apply[TemporalData[#1,{#2}]&]
...
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