I am trying to plot a graph of two variables z1 and z2 versus t. but for some values of t I am getting z2 values negative in a graph. How to make these z2 values zero?

I am trying to plot a graph of two variables z1 and z2 versus t. but for some values of t I am getting z2 values negative in a graph. How to make these z2 values zero for some values of t?

Answer 1

[Star Strider]

One approach —

z2 = randn(1,10)

z2 = 1×10

0.3138 -0.3598 0.9730 0.3409 0.8508 -2.6376 -1.2036 -2.4293 1.4585 -1.1442

z2(z2<0) = 0

z2 = 1×10

0.3138 0 0.9730 0.3409 0.8508 0 0 0 1.4585 0

.

Answer 2

[John D'Errico]

Another approach...

z2 = randn(1,7)

z2 = 1×7

-1.0673 -0.3280 2.2819 -0.8316 -0.8863 -0.0035 1.4951

z2 = max(z2,0)

z2 = 1×7

0 0 2.2819 0 0 0 1.4951