Pass Multiple Parameters To Function For Plot

Question

I have function which takes 2 inputs:

function [r] = myfunc(x,y)

I want to plot this function but i get this error:

>> plot(myfunc, [1 2]);
Error using myfunc (line 2)
Not enough input arguments.

That's because you're not calling plot properly. plot takes in a set of x values and a set of y values as the default set of parameters. The output will produce a figure that plots points. Can you show what myfunc looks like? Depending on what it looks like, I can suggest options to help you plot your function. — rayryeng
– rayryeng, Commented May 29, 2014 at 23:56

Justin Fletcher · Accepted Answer · 2014-05-30 00:56:17Z

1

If I understand your question, I think you're looking for this:

[r] = myfunc(x,y)
plot(x, y, r)

I'm assuming that myfunc takes x and y as vectors, and returns r as a vector. If not, let me know, and I'll post an edit explaining how to properly set up x, y, and z for use with plot.

answered May 30, 2014 at 0:56

Justin Fletcher

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1 Comment

rayryeng Over a year ago

This should possibly use plot3 if it's a 3D curve. That code will plot (x, y) values with r as additional properties to the curve... Colour... Markers.

milad · Accepted Answer · 2014-05-30 06:19:48Z

1

when you have 3 variables (i.e. x,y and r) you cannot use 2D plot and you should use plot3(x,y,myfunc(x,y)) instead.

answered May 30, 2014 at 6:19

milad

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