MATLAB: What does this warning mean

folderlast folder no longer existswarning

Warning: "/Users/ayushkumar/Documents/MATLAB/Examples/R2020b/graphics/PlottingImaginaryAndComplexDataExample" selected using the Last Working Folder preference could not be

accessed.

Using "/Users/ayushkumar/Documents/MATLAB" as the initial working folder instead.

Best Answer

This means, that you have instructed Matlanb to use the last working folder (the folder replied by the cd command) is used as initial folder when starting Matlab. If you delete this folder, Matlab cannot start there anymore and selects another folder.

You can ignore this warning.

Or open the preferences and adjust MATLAB->General->"Initial working folder" with a folder, which does exist.

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MATLAB: WHAT does this mean

This probably means that you are referring to something like

d(3,3)

while the variable d does not exist.

You might have cleared it somewhere before calling it, or it may not have existed at all.

MATLAB: What does this mean

The values you see such as 175.0048 have no documented inherent meaning. They are to be considered as arbitrary numbers that MATLAB matches against its internal tables.

When I tested a couple of years ago, I saw hints that there might be some internal structure to the numbers, that some of the bits might have meaning, but it was at most guidelines, sort of like saying "red vegetables are usually tomatoes" (but not all tomatoes are red, and not all red vegetables are tomatoes)

If you need to find out the axes that is the parent of a lineseries object, you can use

ancestor(h1, 'axes')

Often you can abbreviate that to

get(h1, 'Parent')

but sometimes there are other graphics objects in the middle.

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MATLAB: WHAT does this mean

MATLAB: What does this mean

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