Transforming data long to wide, issue with code

[desireatem]

Hello,

I am trying to transform this data from wide to long but kept having issues:

data long;
set mental ;
array Avg_hrs_sleep_month(0:2) Avg_hrs_sleep_month0-Avg_hrs_sleep_month2;
array hrs_of_sleep_yest(0:2) hrs_of_sleep_yest0-hrs_of_sleep_yest2;

*Insomnia0 Insomnia1 Insomnia2 see_yourself_6month0 see_yourself_6month1 see_yourself_6month2;
do time=0 to 2;
Avg_hrs_sleep_month = Avg_hrs_sleep_month(time);
hrs_of_sleep_yest= hrs_of_sleep_yest(time);
output;
end;
run;

215 data long;
216 set mental ;
217 array Avg_hrs_sleep_month(0:2) Avg_hrs_sleep_month0-Avg_hrs_sleep_month2;
218 array hrs_of_sleep_yest(0:2) hrs_of_sleep_yest0-hrs_of_sleep_yest2;
219
220 *Insomnia0 Insomnia1 Insomnia2 see_yourself_6month0 see_yourself_6month1 see_yourself_6month2
220! ;
221 do time=0 to 2;
222 Avg_hrs_sleep_month = Avg_hrs_sleep_month(time);
ERROR: Illegal reference to the array Avg_hrs_sleep_month.
223 hrs_of_sleep_yest= hrs_of_sleep_yest(time);
ERROR: Illegal reference to the array hrs_of_sleep_yest.
224 output;
225 end;
226 run;

NOTE: The SAS System stopped processing this step because of errors.
WARNING: The data set WORK.LONG may be incomplete. When this step was stopped there were 0
observations and 46 variables.
WARNING: Data set WORK.LONG was not replaced because this step was stopped.
NOTE: DATA statement used (Total process time):
real time 0.01 seconds
cpu time 0.00 seconds

[SASKiwi · Accepted solution]

Don't create DATA step variables with the same names as your arrays:

data long;
set mental ;
array Avg_hrs_sleep_month(0:2) Avg_hrs_sleep_month0-Avg_hrs_sleep_month2;
array hrs_of_sleep_yest(0:2) hrs_of_sleep_yest0-hrs_of_sleep_yest2;

*Insomnia0 Insomnia1 Insomnia2 see_yourself_6month0 see_yourself_6month1 see_yourself_6month2;
do time=0 to 2;
Avg_hrs_sleep_mth = Avg_hrs_sleep_month(time);
hrs_of_sleep_yday = hrs_of_sleep_yest(time);
output;
end;
run;

[desireatem]

Thank you, this has put me in a state of complete frustration. Thank you