how to change negative value to positive

[harrylui]

good day,

if  i got the data like below. what can i do to remove negative value.

number

100

-100

200

-200

thanks in advance

harry

[PeterClemmensen · Accepted solution]

There is a difference between changing negative values to positive and removing negative values. I think you want the first, as indicated in your subject.

data have;
input number;
datalines;
100
-100
200
-200
;

data want;
    set have;
    number = abs(number);
run;

[Stephanvd]

data have;
input number;
datalines;
100
-100
200
-200
;

data want;
    set have;
    where number >= 0;
run;

[harrylui]

thank you all!