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smajid
Obsidian | Level 7

Hi,

 

I am a newbie, who is using proc univariate to create a histogram but I'm having issues. My problem is that all the observations are bunched up under one bin/bar. Can anyone please guide me what could be the issue? Thank you in advance for your help!

Regards

Saulat

 

========

  • I'm trying to create a histogram for a variable "promtime", which has a range of 0 to 14034. However, the value 14034 is an outlier and if I exclude that, the range is 0 to 39. I tried to do that via "endpoints" option in the "histogram" statement but it doesn't work.
  • My code is below. I suspect that the "goptions" statement is causing problems but not sure about that.
  • The output of the "proc freq" and histogram chart are attached.

 

Code:

***Temporary setting default values for graphics attributes***;
goptions reset=global /*Cancels all global statements */
gunit=pct /*Specifies the default unit of measure to be Percent, which to be used with height specifications.*/
hsize= 10.625 in /*Sets horizontal heigh of graphic area */
vsize= 8.5 in /*Sets vertical heigh of graphic area */
htitle=4 /*Selects the default height (default percent) used for the first TITLE line.*/
htext=3 /*Specifies the default height of the text in the graphics output. */
vorigin=0 in /*Sets vertical origin of graph */
horigin= 0 in /*Sets horizonal origin of graph */
cback=white border /*Background color of graph is set to white */
ctext=black /*Text color is black*/
colors=(black blue green red yellow) /*Specifies the foreground colors used to produce your graphics output*/
ftext=swiss /*Default font for all text*/
lfactor=3; /*Line Thickness */

 

***Check***;
proc freq data =Project1.Org ;
tables promtime;
run;

 

proc univariate data=Project1.Org noprint;
histogram promtime
/ endpoints = 0 to 39;
run;


FrequencyTable - promtime variable.JPGHistogram -promtime variable.JPG
1 ACCEPTED SOLUTION

Accepted Solutions
Reeza
Super User

What does your log say? 

Exclude your outlier with a WHERE statement instead. 

View solution in original post

6 REPLIES 6
Reeza
Super User

What does your log say? 

Exclude your outlier with a WHERE statement instead. 

smajid
Obsidian | Level 7
Oh wow, thanks, Reeza! The 'where statement' solution worked.

I really appreciate your prompt response.
Ksharp
Super User
1) specify step width.

data class;
 set sashelp.class end=last;
 output;
 if last then do;age=30;output;end;
run;

proc univariate data=class;
 var age;
 histogram age/ endpoints=(0 to 30 by 1) ;
run;


2) Your data is discrete not continuous, it is not good for Histogram, but for VBAR chart.

proc sgplot data=class;
 vbar age/ stat=percent;
run;


smajid
Obsidian | Level 7
Thanks, Ksharp! I tried Reeza's solution first, it solved the issue. But I sure will see if this works. Thanks a lot for your help too.

I love SAS Communities!!
Ksharp
Super User

data class;
 set sashelp.class end=last;
 output;
 if last then do;age=30;output;end;
run;

proc univariate data=class;
 var age;
 histogram age/ endpoints=(0 to 30 by 1) rtinclude ;
run;

Reeza
Super User

ENDPOINTS & MIDPOINTS must cover the full interval otherwise SAS ignores it. There will be a message in the log to that effect. 

So, exclude your outliers with a WHERE statement. 

 

Where variable< 10000;

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