How to set multiple values of a threshold?

My threshold is 12. If I will get positive values greater than and equal to 12 then I have to set it 1. If I will get negatives values greater than and equal to -12 then I have to set it -1 and all other values that are smaller than -12 and 12 as 0. So how can I set this threshold. In my example valueX1_21 should be -1 but it is 0. How can I get this as -1? Below is my code.

tolX1_4 = [1     1     1     1     1    -1     1     1     0     1     1     1     1     1     1     1     1     1     1     1     1 1     0     1];
tolX1_21 = [   -1    -1    -1    -1    -1    -1    -1    -1    -1    -1    -1     0    -1    -1    -1    -1    -1     0    -1    -1    -1 -1    -1    -1];
tolX1_22 = [ 0     0     0     0     0     0     0     0     0    -1    -1     0     0    -1     0     0    -1    -1     0     0     0  0     0     0];
SumX1_4 = sum(tolX1_4)
SumX1_21 = sum(tolX1_21)
SumX1_22 = sum(tolX1_22)

threshold = 12;

valueX1_4 = double(SumX1_4 >= threshold)
valueX1_21 = double(SumX1_21 >= threshold)
valueX1_22 = double(SumX1_22 >= threshold)

Answer 1

[Alan Stevens]

Here's one way:

tolX1_4 = [1     1     1     1     1    -1     1     1     0     1     1     1     1     1     1     1     1     1     1     1     1 1     0     1];
tolX1_21 = [   -1    -1    -1    -1    -1    -1    -1    -1    -1    -1    -1     0    -1    -1    -1    -1    -1     0    -1    -1    -1 -1    -1    -1];
tolX1_22 = [ 0     0     0     0     0     0     0     0     0    -1    -1     0     0    -1     0     0    -1    -1     0     0     0  0     0     0];

threshold = 12;
value = @(S) (sign(S)*S>=threshold)*sign(S);

SumX1_4 = sum(tolX1_4)

SumX1_4 = 20

SumX1_21 = sum(tolX1_21)

SumX1_21 = -22

SumX1_22 = sum(tolX1_22)

SumX1_22 = -5

valueX1_4 = value(SumX1_4)

valueX1_4 = 1

valueX1_21 = value(SumX1_21)

valueX1_21 = -1

valueX1_22 = value(SumX1_22)

valueX1_22 = 0

or define value as

value = @(S) (abs(S)>=threshold)*sign(S);