Separate the positive values from the negative values

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I have the following
X=[1 - 3 5 -8 4 9 -6 -3]
I want to separate the polarity ( positive values from the negative values) like this
Xp=[1 5 4 9]
Xn=[-3 -8 -6 -3]
then flip the negative values to positive values
like
Xn=[3 8 6 3]
then pass the values as a two-step
like
first, pass the positive step and the second pass the negative steps
NOTE : general methods

Accepted Answer

madhan ravi
madhan ravi on 11 Jan 2019
Edited: madhan ravi on 11 Jan 2019
Xp=X(X>0)
Xn=X(X<0)
Xn=abs(Xn)
  4 Comments
madhan ravi
madhan ravi on 11 Jan 2019
Edited: madhan ravi on 11 Jan 2019
Xn=-Xn
Note : Only works if all the numbers are less than 0.
Xn(Xn<0)=-Xn(Xn<0) % alternate would work generally

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