I have the following data set, and I want to remove the rows that Q1_1345 to Q14b_6061 are all blanks. In this case, I want my output excludes the entire row of Program 302 and 402.
State | City | District | Program | Q1_1345 | Q2_1112 | Q3_1236 | Q4_8626 | Q5_1457 | Q6_5656 | Q7_8989 | Q8_1568 | Q9_8521 | Q10_0123 | Q11_2456 | Q12_9630 | Q13_2121 | Q14a_6060 | Q14b_6061 |
AK | Anchorage | A | 301 | 1 | Yes | Yes | Yes | 2 | 50 | Yes | A1 | 86 | 54 | 405 | Yes | Yes | Yes | 1 |
AK | Sitka | A | 302 | |||||||||||||||
IL | Chicago | A | 401 | 5 | No | No | No | 2 | 4 | No | C2 | 20 | 74 | 54 | Yes | Yes | Yes | 1 |
AL | Mobile | A | 262 | 54 | Yes | Yes | Yes | 21 | 4 | No | C2 | 40 | 65 | 40 | No | No | Yes | 1 |
IL | Chicago | B | 402 | |||||||||||||||
NY | New York | B | 998 | 1 | No | No | No | 2 | 44 | No | B3 | 56 | 10 | 40 | No | Yes | Yes | 1 |
ID | Nampa | A | 744 | 574 | 2 | 878 | No | D5 | 586 | 40 | 6 | Yes | No | No | 2 | |||
NC | Charlotte | A | 601 | 77 | Yes | Yes | Yes | 2 | 5852 | No | E1 | 748 | 0 | 74 | Yes | Yes | Yes | 1 |
HI | Honolulu | A | 101 | 74 | No | No | No | 2 | 42 | No | D4 | No | No | No | 2 |
Function cmiss accepts both numeric and character variables. So you can use
if cmiss(of Q1_1345 -- Q14b_6061) = <number of variables> then delete;
Note the double dash between the first and last variables in the list.
Are the variables concerned numeric, character or a mix?
I ask because if they are all numeric then
if max(<put your variable list here>) = . then delete;
if mixed character then use
if nmiss(<list of the numeric variables>)= <the number of numeric variables> and cmiss(<list of character variables>) = <number of character variables> then delete.
Thank you for the reply. It is a mix of numeric and character. Is there a better way of listing variables out? Because the dataset has about 200 variables, the table i posted is a shorten version.
Function cmiss accepts both numeric and character variables. So you can use
if cmiss(of Q1_1345 -- Q14b_6061) = <number of variables> then delete;
Note the double dash between the first and last variables in the list.
There are a number of ways of listing varaibles:
Q: (note the colon) would all variables that start with Q
Q13: all variables that start with Q13
if the Names are sequential and of the same type (all numeric or all character)
Q13245 - Q14456 would work,
two -- can be used to signify those that are adjacent left to right such as
Q15_23 -- Q27_abc
You can use mulitple groups of these in a single function call sucha as
Max(q13: , Q14_1 - Q15_6, Q27_abc -- Q39end)
When I looked at your Q1_1345 Q2_1112 Q3_1236 I did wonder what the _xxxx added to the variable name instead of Q1 Q2 Q3.
And of the variable you shows the only one that I would possibly have had as character was Q8. And if the range of values was small I may have had a custom informat/format pair to have that as numeric as well. I would say that for 99% of variable coded as Yes/No they should be read with an informat to assign 1/0.
Hi,
it seems you have more Q variable to check than 'KeyVariables'
You could use this:
%MACRO DeleteEmptyObs(inputLib=,inputDs=,outputDs=,keyVars=); %let keyVars=%upcase(&keyVars.); PROC SQL noprint; SELECT 'missing('||strip(name)||')' into :MissingNames separated by ' AND ' FROM sashelp.vcolumn WHERE libname eq upcase("&inputLib.") AND memname eq upcase("&inputDS.") AND upcase(name) not in ("&keyVars.") ; QUIT; DATA &outputDs.; set &inputLib..&inputDS.; if &MissingNames. then delete; RUN; %MEND DeleteEmptyObs; %DeleteEmptyObs(inputLib=sashelp,inputDs=class,outputDs=work.test,keyVars=%str(name,age,sex));
- Cheers -
CODE NOT TESTED. options missing=' '; data want; set have; if missing(cats(of Q1_1345 -- Q14b_6061 ) ) then delete; run;
One more tip I didn't see listed in comments:
You need to know the order of variables in order to use the convenient
varnam1--varnamex method.
You can get that via
proc contents data =[dataset] position;
run;
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