Inbuilt function that allows to count plus and minus signs of numbers?

Hi Is there a function inbuilt into MATLAB that allows you to count plus and minus signs of numbers? F.ex. if your data was:

data = [ -0.2 -0.1 0 1.1 2.4 0.5 -0.8 -0.9];

if would count in signs: - - + + + + - -

Is it possible??

Answer 1

[Walter Roberson]

There is no inbuilt function. You can use sign() to determine the sign as -1 0 or +1 but then you would still need to do the counting. So you might as well use:

numnonneg = sum(data >= 0);
numneg = length(data) - numnonneg;