Why cannot I plot my pressure to my volume?

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Christian Berwanger 2017-11-21

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评论： Walter Roberson 2017-11-21

Hello, I do have two tables (both 5001x1) One represents the pressure and one represents volume. Now I want to plot these. When I select both I cannot use the plots in the upper menu. When using it in the command windows

plot(pressure,volume)

gives me the error:

Too many arguments

What am I doing wrong here?

Thanks in advance

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回答（2 个）

Walter Roberson 2017-11-21

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? You cannot pass table objects themselves to plot(); plot() is not defined on table objects.

But that would give you a different error. More likely you should check with

which -all plot

as you probably somehow have a different plot.m on your path.

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Christian Berwanger 2017-11-21

which -all plot shows me just some matlab paths. None of these is an own function or variable.

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Star Strider 2017-11-21

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You most likely have a variable named ‘plot’.

Run this from a script or your Command Window:

which plot -all

If the first line is:

plot is a variable.

you have found the problem. (This is called ‘overshadowing’ a function.) The solution is to rename the variable to something that does not conflict with a function name.