topic Round down by 500 in SAS Programming

Round down by 500

Ronein — Tue, 05 Jan 2021 08:23:48 GMT

Hello

I want to round down by 500.

for example:

870 will be rounded to 500

1020 will be rounded to 1000

2580 will be rounded to 2500

2900 will be rounded to to 2500

what is the way to do it please?

data t;
input x;
cards;
870
1020
2580
2900
;
run;
data t2;
set t;
newvalue1 = round(x,500);
 run;

Ronein — Tue, 05 Jan 2021 08:26:37 GMT

I know this way but maybe have better solution

data t2;
set t;
newvalue1 = round(x,500);
if newvalue1>x then newvalue2=newvalue1-500;else newvalue2=newvalue1;
 run;

PeterClemmensen — Tue, 05 Jan 2021 08:29:11 GMT

How about

data t;
input x;
cards;
870
1020
2580
2900
;

data want;
   set t;
   y = x - mod(x, 500);
run;

PaigeMiller — Tue, 05 Jan 2021 11:32:19 GMT

As you see, the ROUND function doesn't round down, it rounds to the nearest 500. The fix is:

newvalue1 = round(x-250,500);