xp = subplus(x)
returns the positive part of x, (x)+,
which is x if x is nonnegative, and
0 if x is negative. In other words,
xp equals max(x,0). If
x is an array, this operation is applied entry by
entry.
You can also select a web site from the following list:
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.