size function says not enough input arguments

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Berk Opla
Berk Opla 2021-7-12
回答： Walter Roberson 2021-7-12
function y = mypnz(x)
% negative positive zero
[m,n] = size(x);
pp = 0;
nn = 0;
zz = 0;
for a = 1:m
for b = 1:n
if x (a,b) < 0
nn= nn+1 ;
end %if
if x (a,b) > 0
pp= pp+1 ;
end %if
if x (a,b) == 0
zz = zz+1 ;
end %if
end % for-xb
end % for-a
y= [pp nn zz];
i'm very new to matlab but how do i get the size (x) line to work? i t works when i run it in the command window

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采纳的回答

Walter Roberson
Walter Roberson 2021-7-12
You cannot run that code by pressing the green Run button. When you press the green Run button then the function is executed with no arguments. You need to go down to the command line and run the function with an argument.

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