SAS Global Forum Monday update


On Friday before the conference, I presented a 1 day "developer led" seminar on SG Procedures and GTL, along with a discussion of new features for SAS 9.3.  The experience was very gratifying as all users were now using SAS 9.2, and some were using SAS 9.3.  We had a lively session, with very high level participation by the attendees discussing SAS 9.2 and SAS 9.3 features.

At 2pm today (Monday), I presented some key noteworthy new SAS 9.3 features in SG Procedures at the "Tales of SAS 9.3: A Collection of Users" led by David Shamlin.  I was honored to be in the company of some well known SAS names such as Rick Langston, Scott Huntley, Howard Plemmons, Jason Secosky and Margaret Crevar.  I discussed new plot options, new plot statements, Annotate and Attribute Maps.

Let us start with new options:

Box Plots with Groups:

SAS 9.3 Code:

title 'Cholesterol by Death Cause';
proc sgplot data=heart;
  vbox cholesterol / category=deathcause group=sex clusterwidth=0.5;
  xaxis display=(nolabel);

Box plot on Interval Axis:

SAS 9.3 Code:

title '2009 Lab Results by Time';
proc sgplot data=intervalBoxGroup;
  format date monname3.;
  vbox response / category=date;
  xaxis type=time display=(nolabel) values=('01jan09'd to '01dec09'd by month);
  yaxis grid display=(nolabel);

Box Plot on Interval Axis with Cluster Groups:

SAS 9.3 code:

title '2009 Lab Results by Time and Treatment';
proc sgplot data=intervalBoxGroup;
  format date monname3.;
  vbox response / category=date group=drug groupdisplay=cluster;
  xaxis type=linear display=(nolabel) values=('01jan09'd to '01dec09'd  by month);
  yaxis grid display=(nolabel);

Scatter and Series Plot with Cluster Groups:

SAS 9.3 code:

title 'Mean of QTc Change from Baseline';
proc sgplot data=QTc_Mean_Group;
  format week qtcmean.;
  scatter x=week y=mean / yerrorupper=high yerrorlower=low group=drug
          groupdisplay=cluster clusterwidth=0.5 markerattrs=(size=7 symbol=circlefilled);
  series x=week y=mean / group=drug groupdisplay=cluster clusterwidth=0.5;
  refline 26 / axis=x;
  refline 0  / axis=y lineattrs=(pattern=shortdash);
  xaxis type=linear values=(1 2 4 8 12 16 20 24 28) max=29 valueshint;
  yaxis label='Mean change (msec)' values=(-6 to 3 by 1);

 Full SAS 9.3 Code:  NewPlotFeatures


About Author

Sanjay Matange

Director, R&D

Sanjay Matange is R&D Director in the Data Visualization Division responsible for the development and support of the ODS Graphics system, including the Graph Template Language (GTL), Statistical Graphics (SG) procedures, ODS Graphics Designer and related software. Sanjay has co-authored a book on SG Procedures with SAS/PRESS.

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  2. Question on Box Plot on Interval Axis with Cluster Groups:

    Hi Sanjay,

    I have a question regarding the options on the vbox statement in sgplot(SAS 9.3).
    I am producing a box plot with cluster groups (2 groups - T1 & T2) for 9 categories, The nine categories have scores for around 40 subjects. I want to compare the T1 Vs T2 score distributions. The thing I would like to do is, highlight a datapoint that indicates where each subject lies within the boxplot. Something similar to what we get when we use datalable option, but datalabel option only shows the outliers.

    Is there a way I can select and highlight only a specific datapoint for one particular subject on a boxplot?

    Please let me know if you know any solution to this issue.


    Parag Kunte.

    • Sanjay Matange
      Sanjay Matange on

      The way to do this would be to overlay a SCATTERPLOT for the subjects of interest on top of the BOXPLOT. Unfortunately, you cannot overlay a SCATTER statement on a VBOX using SGPLOT procedure. However, you can do this using the underlying GTL. So, user a LAYOUT BOXPLOT statement in a LAYOUT OVERLAY, and place a SCATTERPLOT on top. Only include Y values for the scatter plot for the observations you want to highlight. You could even label them for identification. If there are many, they may overlap. This may make for a good topic to write about in Graphuically Speaking blog.

  3. Hi Sanjay,

    I have a question with histogram in SAS. I want to make a graph in which x axis has to be splitted to gender male and female against a variable in Y axis. I have an another question about how to introduce geometric mean in to the histogram for male and female in the X-axis in the same histogram. The y-axis variable should be constant all the time. Could you please explain me with SAS code? Thankíng you, Shakthi

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