Threshold Value

[Rafael Rosolem]

hi,

supose you have two thresholds the lower one, tlo, and the upper one,
thi, and you want to have tlo < var < thi, then you'll need to set the
maskout as follows:

aa=maskout(var,-(var-tlo)*(var-thi))

the minus sign at the beginning of the statement guarantees you that you
are doing tlo < var < thi, otherwise you would be doing tlo > var < thi.

try it out!

good luck.

R.


JL Lee wrote:

>Dear All,
>
>Is there anyone that have experience on doing average by cutting a
>threshold value without cutting off points that are "zero".
>
>For example,  aa=maskout(var,var-2.); this will make all var to be missing
>value including points that are "zero".  Is there anyway that I can keep
>points that are zero and maskout points that are 0 < var < 2?
>
>
>Many Thanks.
>
>
>