As a matter of an example I have the following dataset and I want what is shown in the right side of the arrow:
My idea was to
(1) make a macro to select the colnames of whatever dataset table and put it into an array;
(2) make a macro that you input a column and returns two columns (one with the colname and the other with the values)
(3) make a macro that concatenates / merges two datasets into another.
Then iterably getting the result.
I am having troubles even to get the names of a table so I really kindly ask for help.
Condition: Can't used proc iml or R language.
Here I put the dataCode
DATA WORK.dat1; INPUT A B C; datalines; 0 0 0 0 2 0 0 0 0 0 1 0 1 0 2 1 2 1 1 1 1 1 1 1 ;
Can someone help me in the writing of the code for the macros ? No need for the iteration part since I can do it
Thank you in advance for so much help,
I'm not sure I would want to complicate this by adding macro language. How about:
data want;
set have;
array nums {*} _numeric_;
do _n_=1 to dim(nums);
colnames = vname(nums{_n_});
values = nums{_n_};
output;
end;
keep colnames values;
run;
proc sort data=want;
by colnames;
run;
This processes numeric variables only, but you would need to process character variables separately. You could not use a single variable (VALUES) to hold both numeric and character values.
Let me point out that there is no need for macros here, re-arranging your data set can almost always be performed with data step operations, and/or PROC TRANSPOSE.
This gives the result you want, you will need to sort data set WANT to your final required condition.
data want;
set dat1;
colnames='A';
value=a;
output;
colnames='B';
value=b;
output;
colnames='C';
value=c;
output;
keep colnames value;
run;
I'm not sure I would want to complicate this by adding macro language. How about:
data want;
set have;
array nums {*} _numeric_;
do _n_=1 to dim(nums);
colnames = vname(nums{_n_});
values = nums{_n_};
output;
end;
keep colnames values;
run;
proc sort data=want;
by colnames;
run;
This processes numeric variables only, but you would need to process character variables separately. You could not use a single variable (VALUES) to hold both numeric and character values.
DATA WORK.dat1;
INPUT A B C;
datalines;
0 0 0
0 2 0
0 0 0
0 1 0
1 0 2
1 2 1
1 1 1
1 1 1
;
proc print;
run;
proc transpose out=test name=colnames;
run;
proc transpose out=test(rename=col1=values drop=_:);
by colnames notsorted;
run;
proc print;
run;
Thank you so much for the answer, this indeed works as well as the other I have accepted as answer.
Nevertheless, I could only give one accepted answer, but thank you for the time spent in the question
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