How I can print out only the numbers over the threshold and keep each number in the same place ?

How I can print out only the numbers over 30 and keep each number in the same place ? to able to plot and shows which sample is over 30 !

I want show the real value 30-50 = 20 not 1 and zero !

x= randi([20 50],163,50)

[darova]

plot( randi([3 5],10,10) )
ylim([ 2 6 ])

Everything is between 3 .. 5. What is the problem?

Answer 1

[Sindar]

Plots will exclude NaN values, but keep the rest of the data in place. So, here's a trick:

data ./ (condition)

Where condition is true, this will return the data (data/1)

Where condition is false, this will return NaN (data/0)

So:

y = randi([20 50],163,50);
miny = 30;
plot(y./(y>=miny))