Problem with a yyaxis plot

Question

编辑： Adam Danz 2019-12-17

Hi, i need your help: i´m trying to plot this code:

x = linspace(0,25); y = sin(x/2); yyaxis left plot(x,y);

I found this code in mathworks help, i dont know why i can´t run it. The error says:

Error using yyaxis

Axes argument must be a Cartesian Axes of type matlab.graphics.axis.Axes

Help me please.... how i could fix it? its my matlab problem or the code is wrong i don´t know help me...

Answer 1

Adam Danz 2019-12-13

编辑：Adam Danz 2019-12-17

You're missing a semicolon

x = linspace(0,25); y = sin(x/2); yyaxis left; plot(x,y);
%                                       here ^

Or, better yet, use separate lines which greatly increases readability and error detection.

x = linspace(0,25); 
y = sin(x/2); 
yyaxis left  %no semicolon needed this time
plot(x,y);

The error message appeared becaues Matlab interpreted your code as providing an axes input: yyaxis(ax,___)