topic Re: using _N_ in a string (remove the spaces!) in SAS Programming

using _N_ in a string (remove the spaces!)

StaticFX — Wed, 22 Nov 2017 15:41:26 GMT

data blah;

set blahblah;

length formula $ 50;

formula = "=CONCATENATE($B" || trim(_N_) || ",$G" || trim(_N_) || ")";

run;

results in

=CONCATENATE($B 1,$G 1)

how do i get rid of those spaces? 🙂 thanks!

Re: using _N_ in a string (remove the spaces!)

PeterClemmensen — Wed, 22 Nov 2017 15:43:41 GMT

data _null_;
   string="=CONCATENATE($B" || trim(_N_) || ",$G" || trim(_N_) || ")";
   newstring=compress(string);
   put string;
   put newstring;
run;

Re: using _N_ in a string (remove the spaces!)

StaticFX — Wed, 22 Nov 2017 15:46:51 GMT

compress!! thats what i was thinking... but why not just do this?

string="=CONCATENATE($B" || compress(_N_) || ",$G" || compress(_N_) || ")";

it works...

Re: using _N_ in a string (remove the spaces!)

Reeza — Wed, 22 Nov 2017 16:21:15 GMT

Just a note that if you're making Excel cell references, it tends to use RC notation for interaction with some things such as DDE. Not sure what ODS EXCEL or TAGSETS use.

Re: using _N_ in a string (remove the spaces!)

Tom — Wed, 22 Nov 2017 16:28:17 GMT

Use one the series of concatenate functions that SAS has.

1569  data _null_;
1570   do _n_=1 to 3 ;
1571     length formula $ 50;
1572     formula = cats('=CONCATENATE($B',_N_,',$G',_N_,')');
1573     put _n_= formula = :$quote.;
1574   end;
1575  run;

_N_=1 formula="=CONCATENATE($B1,$G1)"
_N_=2 formula="=CONCATENATE($B2,$G2)"
_N_=3 formula="=CONCATENATE($B3,$G3)"

They will also silently convert numbers to strings for you unlike when you apply a character function like trim() to them. But if your numbers are not integers or can get too big then you should use PUT() function to convert your numbers to string rather than letting SAS guess at what you want.