Vector dimensions and variable display

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Chet Sharma 2018-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/382751-vector-dimensions-and-variable-display

关闭： MATLAB Answer Bot 2021-8-20

Hi This is a question about how Matlab displays certain variables, depending on the number of dimensions contained. When I generate randn(10,2), I get a 10X2 table in the workspace window, very easy to copy paste directly from here to excel. However, when I do randn(10,2,1), Matlab creates something that looks like a text file in the workspace. Copying the data over can be a pain when you have randn(1000,2,1) for example. Why does Matlab do this?

For context - I want to "pre-generate" (if there's such a word) a set of random numbers for multiple assets and for multiple simulations; hence I'm using randn(NumSteps,NumAssets,NumSimulations). Thanks C

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Stephen23 2018-2-14

编辑：Stephen23 2018-2-14

Instead of copy-and-pasting, why not just get MATLAB to write the Excel file for you?

https://www.mathworks.com/help/matlab/spreadsheets.html

"Copying the data over can be a pain when you have randn(1000,2,1) for example. Why does Matlab do this?"

Because data is reliably written to files and read from files using the appropriate functions. Copy-and-pasting is not a reliable method for transferring data between files/programs/applications/...

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