topic Re: Error in my macro in SAS Programming

Error in my macro

CorinneT — Fri, 15 Jul 2022 20:53:23 GMT

Please, need an assitance for this macro below, It doesn't work. I don't know why!

The aim is to alter a date character to a date numeric. Sometime, I could not I have the day of character date. So, the reference is XXday=15

%macro DateCharNum(VarNum, VarChar);

if &VarChar. ne "" then do;

if find(&VarChar., "xx/xx")>0 then &VarNum. = mdy(6, 1, substr(&VarChar., 7));

else if find(&VarChar., "xx")>0 then &VarNum. = input(substr(&VarChar., 4), anydtdte.)+14; * 15 of each month;

else &VarNum. = input(&VarChar., DDMMYY10.);

end;

else do; &VarChar. = .;

end;

format &VarNum. DDMMYY10.;

%mend;

Re: Error in my macro

ballardw — Fri, 15 Jul 2022 21:01:57 GMT

Really should provide some example values of the input and the desired output value.

Doesn't work is awful vague.

Are there errors in the log?: Post the code and log in a code box opened with the "</>" to maintain formatting of error messages. If macros are involved set OPTIONS MPRINT; prior to executing the code so the macro resolution is shown.

No output? Post any log in a code box.

Unexpected output? Provide input data in the form of data step code pasted into a code box, the actual results and the expected results. Instructions here: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-data-AKA-generate/ta-p/258712 will show how to turn an existing SAS data set into data step code that can be pasted into a forum code box using the "</>" icon or attached as text to show exactly what you have and that we can test code against.

You may want to consider the COALESCE function in the MDY function. Pull the year, month and day from the string.

then use Coalesce with possible missing

date = mdy(6,coalesce(numday,15),2015);

for example if the numday is missing return 06/15/2015 (in mmddyy ) or 06/numday/2015 if a day valid for the month.

Re: Error in my macro

Tom — Fri, 15 Jul 2022 21:02:46 GMT

Can you provide some example input character strings with the date values you expect to create for those example strings?

Is the issue with the macro code? Or the SAS code you are using the macro to generate? Did you test the logic of the SAS code before wrapping it in a macro?

The macro seems to work in the sense that executes without any errors and generates SAS code that does not have any obvious syntax errors.

Bute the code it generates has some issues since it it treating the result of the SUBSTR() function call like it is a number and attempting to assign a numeric missing value to a character variable.

1977  options mprint;
1978  data test;
1979    string='12/12/2020';
1980    %datecharnum(number,string)
MPRINT(DATECHARNUM):   if string ne "" then do;
MPRINT(DATECHARNUM):   if find(string, "xx/xx")>0 then number = mdy(6, 1, substr(string, 7));
MPRINT(DATECHARNUM):   else if find(string, "xx")>0 then number = input(substr(string, 4), anydtdte.)+14;
MPRINT(DATECHARNUM):   * 15 of each month;
MPRINT(DATECHARNUM):   else number = input(string, DDMMYY10.);
MPRINT(DATECHARNUM):   end;
MPRINT(DATECHARNUM):   else do;
MPRINT(DATECHARNUM):   string = .;
MPRINT(DATECHARNUM):   end;
MPRINT(DATECHARNUM):   format number DDMMYY10.;
1981    put (_all_) (=);
1982  run;

NOTE: Character values have been converted to numeric values at the places given by: (Line):(Column).
      1:97
NOTE: Numeric values have been converted to character values at the places given by: (Line):(Column).
      2:79
string=12/12/2020 number=12/12/2020
NOTE: The data set WORK.TEST has 1 observations and 2 variables.