create a step function in matlab

To create a step function in Matlab, you can use a conditional statement in a function. Here is an example:

main.m
function y = step_fn(x)
    if x >= 0
        y = 1;
    else
        y = 0;
    end
end
89 chars
8 lines

In this example, the input x is compared to zero using the if statement. If x is greater than or equal to zero, then the output y is set to one. If x is less than zero, then the output y is set to zero. This creates a step function that jumps from zero to one at the threshold of zero.

You can call this function with any input value and it will return the corresponding output value based on the condition. For example:

main.m
>> step_fn(-2)
ans =
   0
>> step_fn(0)
ans =
   1
>> step_fn(1.5)
ans =
   1
78 chars
10 lines