topic Re: PROC TRANSPOSE to wide format in New SAS User

PROC TRANSPOSE to wide format

kaitlineolson7 — Thu, 10 Dec 2020 15:15:06 GMT

Hi all,

I had a question about transposing a dataset to wide format when the dataset has missing data. Here is the dataset I created and the code I was using to try to transpose the data:

DATA WORK.data1;
	INFILE DATALINES DELIMITER=',';
	INPUT	Type $ Year HtFt;
	DATALINES;

;

PROC TRANSPOSE
		DATA = WORK.data1
		OUT	 = WORK.data2 (DROP	= _NAME_
							  RENAME = (COL1    = Yr2009
										COL2	= Yr2010
										COL3	= Yr2011
										COL4	= Yr2012) );
	VAR HtFt;
	BY	Type;
	RUN;

Here was the output:

The values for Maple should start at Yr2010 and the missing value should be for Yr2009 and I'm curious as to how I could remedy this?

Thank you so much,

Kaitlin

Re: PROC TRANSPOSE to wide format

novinosrin — Tue, 17 Nov 2020 18:48:00 GMT

DATA WORK.Trees;
	INFILE DATALINES DELIMITER=',';
	INPUT	Type $ Year HtFt;
	DATALINES;
Aspen,2009,15
Aspen,2010,16
Maple,2010,6
Maple,2011,8
Maple,2012,10
Spruce,2009,22
Spruce,2010,23
Spruce,2011,24
Spruce,2012,25
;

proc transpose data=trees out=want prefix=YR_;
 by type;
 id year;
 var htft;
run;

proc print noobs;run;

Type	_NAME_	YR_2009	YR_2010	YR_2011	YR_2012
Aspen	HtFt	15	16	.	.
Maple	HtFt	.	6	8	10
Spruce	HtFt	22	23	24	25

Re: PROC TRANSPOSE to wide format

Kurt_Bremser — Tue, 17 Nov 2020 18:46:45 GMT

Use a PREFIX= option and an ID statement:

proc transpose ...... prefix=yr;
by type;
var htft;
id year;
run;

and no RENAME= dataset option.

Re: PROC TRANSPOSE to wide format

PeterClemmensen — Tue, 17 Nov 2020 18:49:14 GMT

Try this

proc transpose data=trees out=want(drop=_:) prefix=Yr;
   by Type;
   id Year;
   var HtFt;
run;

Result

Type    Yr2009 Yr2010 Yr2011 Yr2012 
Aspen   15     16     .      . 
Maple   .      6      8      10 
Spruce  22     23     24     25

Re: PROC TRANSPOSE to wide format

dwrightii — Thu, 19 Nov 2020 05:33:47 GMT

Hi there,

The good news is you're close. Two things should help. One, the ID statement will help with properly itemizing the observations, so they don't all end up under the first variable. Two you may want to skip the RENAME statement, given that part of your variable name is already there, and you only need to add "Yr" to it, thus (based on your code):

PROC TRANSPOSE
DATA = WORK.Trees
OUT = WORK.TreesWide (DROP = _NAME_) PREFIX = Yr;

BY Type;
VAR HtFt; 
ID Year;
RUN;

The output should look like this:

Obs	Type	Yr2009	Yr2010	Yr2011	Yr2012
1	Aspen	15   	16   	.	    .
2	Maple	.	    6	    8	    10
3	Spruce	22   	23	    24	    25

Re: PROC TRANSPOSE to wide format

dthompsonada — Thu, 10 Dec 2020 15:10:23 GMT

Hi Kaitlin-

I found 2 ways that seemed to work.

Building the data set:

DATA lib.dataset;
INFILE DATALINES DELIMITER=' ';
INPUT Type $
Year
HtFt;
DATALINES;
Aspen 2009 15
Aspen 2010 16
Maple 2010 6
Maple 2011 8
Maple 2012 10
Spruce 2009 22
Spruce 2010 23
Spruce 2011 24
Spruce 2012 25
;

PROC PRINT DATA = lib.dataset;
RUN;

First way to transpose (With Proc Transpose):

PROC TRANSPOSE
DATA = lib.dataset
OUT = lib.datasetwide( DROP = _NAME_ )
PREFIX = Yr;
VAR HtFt;
BY Type;
ID Year;
RUN;

PROC PRINT DATA = lib.datasetwide;
RUN;

Output1:

Obs Type Yr2009 Yr2010 Yr2011 Yr2012123

Aspen	15	16	.	.
Maple	.	6	8	10
Spruce	22	23	24	25

Second way to transpose (With Data Step):

DATA lib.datasetwide2;
SET lib.dataset;
BY Type;

ARRAY Years {2009:2012}Yr2009 - Yr2012 (. . . . );
IF First.type = 1 THEN CALL MISSING(OF Years{*});

Years{Year} = HtFt;

IF Last.Type = 1;

DROP Year HtFt;

RUN;

PROC PRINT Data= lib.datasetwide2;
RUN;

Output 2:

Obs Type Yr2009 Yr2010 Yr2011 Yr2012123

Aspen	15	16	.	.
Maple	.	6	8	10
Spruce	22	23	24	25