Can't plot a function : Error using plot Invalid data argument.

So, I was trying to plot as a function of ϕ when I know that ϕ will lie from 0 to 1.

My code follows like this:

x = linspace(0,1);
y = @(x) (4.63 + (0.3./(x*exp(x.^2)*erfc(x))));
plot(x,y)

The error I get is:

--------------------------------

Error using plot

Invalid data argument.

Error in Matlab_Code_Assignment (line 3)

plot(x,y)

--------------------------------

What was the mistake I was doing ?

[dpb]

You didn't pass an argument to your anonymous function, y. Try

plot(x,y(x))

Then, you'll get to find all the places you're also still missing "dot" operators in y.... :)

[M S Nitish]

x = linspace(0,1);
y = @(x) (4.63 + (0.3/(x.*exp(x.^2)*erfc(x))));
plot(x,y(x))

Now, this shows the error:

Error using *

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the

second matrix. To perform elementwise multiplication, use '.*'.

[dpb]

Ayup...that's what I told you was going to happen... :)

Follow the hint in the help...

[M S Nitish]

ok. I have used other method. Just remove the dots and @ sybmol. Works fine as it creates a y vector with size same as x vector. It works fine now.

[dpb]

Wrong approach...fix the anonymous function to use all dot operators.