Trending questions
97,743 questions
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Why iteration fails? [closed]
I'm solving this ODE and it seems that the first iteration (urho[1]) works but when I try to calculate urho[2] it fails. The ...
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171
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How does Mathematica define the indefinite integral $\int f(x) dx$? [closed]
How does Mathematica define the indefinite integral $\int f(x) dx$?
For example, if you input into Mathematica Integrate[Sin[x], x] it will return $-\cos(x)$ and ...
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vote
3
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419
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How to change the color of the individual squares on a chessboard?
The code I have written to create a chessboard is as follows:
...
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45
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Error when saving notebook, Mathamatica searches for a .m file
Whenever I save a my notebook (filename.nb), I get the error "RenameFile: Directory or file
"..path..\filename.m" not found.", and the file doesn't save.
It happens both with ctrl+...
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How should I handle required package dependencies in a package?
I'm writing a package A.
However, package A depends on package B (Mathematica), which the ...
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NDSolve options for increasing precision near boundaries for "stiff" integration
I'm trying to estimate the solutions u[x,t] to a backward diffusion equation PDE using NDSolve (note - I need the time-dependent solution, as I already have solutions to the equilibrium case where the ...
- 103
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3
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In a nested, ragged list, pairing each element of one sublist with each element of another
This may be a silly question, and if it is, I'm willing to withdraw it. I have a list of lists myInitialList. I wish to write a function to transform ...
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how to improve the predictor corrector schemes including computational cost
I am currently implementing a variable-order fractional predictor–corrector scheme in Mathematica. Since I am still a beginner with Mathematica programming, I encountered several issues during the ...
3
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1
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156
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What, if any, is the list analogue of KeyValuePattern?
I am trying to understand the function of KeyValuePattern. According to the documentation,
KeyValuePattern[{patt1, ...}] is a ...
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4
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1
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Blurry AxisObject
I am trying to imitate default frame of ContourPlot with AxisObject. I used AbsoluteOptions ...
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112
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As shown in the figure, how to draw a graph with a broken y-axis? [duplicate]
Piecewise function. The two segments have significant differences. The y-axis needs to be split to show the trend of each segment, and a connection is required in the middle.
This is quite different ...
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How to check if two edges have consistent orientation in all simple cycles of a graph?
How can I check whether two edges (tagged "c" and "d") have consistent orientation (either always the same ...
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NMinimize apparently enters an infinite loop
I've stumbled across what seems to be a weird interaction of the NMinimize function.
I'm minimising the function -Log[Sin[2x]] + a Cos[x]^2 for $0 < x < \pi/2$...
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2
answers
222
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How can I append data to a file with tab-separated values?
I'm producing a lot of data which I want to save to a file in tab-separated format:
$\begin{matrix}x_1&&f(x_1)\\x_2&&f(x_2)\\x_3&&f(x_3)\\&\ldots\end{matrix}$
I'd like ...
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