topic How to change title of ROCOverlay plot? in Graphics Programming

How to change title of ROCOverlay plot?

derekg — Wed, 28 Sep 2022 21:21:24 GMT

The default title of an ROCOverlay plot produced by PROC LOGISTIC is "ROC Curves for Comparisons". Is there an easy way to change this title?

Thanks!

Re: How to change title of ROCOverlay plot?

PeterClemmensen — Wed, 28 Sep 2022 21:39:08 GMT

The Proc Logistics Doc states you can use set the _ROCOVERLAY_ENTRYTITLE macro variable to the desired title.

Using an example from there:

%let _ROCOVERLAY_ENTRYTITLE = Whatever Title You Want;

data roc;
   input alb tp totscore popind @@;
   totscore = 10 - totscore;
   datalines;
3.0 5.8 10 0   3.2 6.3  5 1   3.9 6.8  3 1   2.8 4.8  6 0
3.2 5.8  3 1   0.9 4.0  5 0   2.5 5.7  8 0   1.6 5.6  5 1
3.8 5.7  5 1   3.7 6.7  6 1   3.2 5.4  4 1   3.8 6.6  6 1
4.1 6.6  5 1   3.6 5.7  5 1   4.3 7.0  4 1   3.6 6.7  4 0
2.3 4.4  6 1   4.2 7.6  4 0   4.0 6.6  6 0   3.5 5.8  6 1
3.8 6.8  7 1   3.0 4.7  8 0   4.5 7.4  5 1   3.7 7.4  5 1
3.1 6.6  6 1   4.1 8.2  6 1   4.3 7.0  5 1   4.3 6.5  4 1
3.2 5.1  5 1   2.6 4.7  6 1   3.3 6.8  6 0   1.7 4.0  7 0
3.7 6.1  5 1   3.3 6.3  7 1   4.2 7.7  6 1   3.5 6.2  5 1
2.9 5.7  9 0   2.1 4.8  7 1   2.8 6.2  8 0   4.0 7.0  7 1
3.3 5.7  6 1   3.7 6.9  5 1   3.6 6.6  5 1
;
 
ods graphics on;
proc logistic data=roc plots(only)=roc;
   LogisticModel: model popind(event='0') = alb tp totscore;
   output out=LogiOut predicted=LogiPred;       /* output predicted value, to be used later */
run;

data ExpertPred;
   input ExpertPred @@;
   datalines;
0.95 0.2  0.05 0.3  0.1  0.6  0.8  0.5 
0.1  0.25 0.1  0.2  0.05 0.1  0.05 0.1 
0.4  0.1  0.2  0.25 0.4  0.7  0.1  0.1 
0.3  0.2  0.1  0.05 0.1  0.4  0.4  0.7
0.2  0.4  0.1  0.1  0.9  0.7  0.8  0.25
0.3  0.1  0.1 
;

data Survival;
   merge LogiOut ExpertPred;
run;

proc logistic data=Survival;
   model popind(event='0') = LogiPred ExpertPred / nofit;
   roc 'Logistic' pred=LogiPred;
   roc 'Expert'   pred=ExpertPred;
   ods select ROCOverlay;
   /* optional: for a statistical comparison, use ROCCONTRAST stmt and remove the ODS SELECT stmt */
   *roccontrast reference('Expert Model') / estimate e;
run;

%symdel _ROC_ENTRYTITLE;

Result:

Re: How to change title of ROCOverlay plot?

ballardw — Wed, 28 Sep 2022 21:42:10 GMT

If I read the documentation on the ROC plot these macro variables may be what you want:

_ROC_ENTRYTITLE

sets the first title line on the ROC plot.

_ROC_ENTRYTITLE2

sets the second title line on the ROC plot.

Example of use, again from the documentation:

   %let _ROC_ENTRYTITLE=New Title;
   Submit PROC LOGISTIC statement
   %symdel _ROC_ENTRYTITLE;

Re: How to change title of ROCOverlay plot?

PeterClemmensen — Wed, 28 Sep 2022 21:44:13 GMT

@ballardw I was there too 🙂 I think those are for the pure ROC plot though and not the overlaid ROC plot?

Re: How to change title of ROCOverlay plot?

ballardw — Wed, 28 Sep 2022 21:46:58 GMT

_ROCOVERLAY_ENTRYTITLE

sets the title on the overlaid ROC plot.

@PeterClemmensen wrote:

@ballardw I was there too 🙂 I think those are for the pure ROC plot though and not the overlaid ROC plot?