Taking the Leap - Using ODS Statistical Graphics for Data Visualization

Taking the Leap - Using ODS Statistical Graphics for Data Visualization

Wei Cheng, Isis Pharmaceuticals, Inc.

Those who can tune that engine well — who solve basic human problems with greater

speed and simplicity than those who came before — will profit immensely.

Evan Williams, Founder of Blogger and Twitter

Life is a travelling to the edge of knowledge, then a leap taken

-- D. H. Lawrence

Outline of TopicsCreate statistical graphs from SAS

proceduresCreate statistical graphs from Statistical

Graphics (SG) proceduresCreate statistical graphs from Graph

Template Language (GTL)ODS Graphics Designer ODS Graphics Editor

















Procedure ODS

Data &Template

Output Object

ODS Output

Destination Engine

HTML Data Set RTF PDF Document

Styles

Data

Table

TemplateStore

Got Graph?

No

Statistical Graphics Engine

Expressions

FunctionsYes

or

Graph

ODS Graphics Basics

ods <dest> file = …

<Procedure or data steps>

Ods <dest> close;

ODS Graphics Basics


ods graphics on;


Ods <dest> close;

ODS Graphics Basics


ods graphics on;


ods graphics off;

Ods <dest> close;

ODS Graphics Basics


ods graphics on / <options>;


ods graphics off;

Ods <dest> close;

ODS Graphics Basics

ods graphics on / <options>;Options:

RESET IMAGENAME ANTIALIAS HEIGHTBORDER SCALEOUTPUTFMT WIDTHIMAGEMAP more-options

Create Statistical Graphs from SAS Procedures


ods graphics on ;Proc freq data = sashelp.heart;tables bp_status;

Run;

ods graphics off;

Ods <dest> close;




ods graphics on ;Proc freq data = sashelp.heart;tables bp_status

/ plots(only)= freqplot;Run;

ods graphics off;



/ plots(only)= freqplot(type = dot);

Run;

ods graphics off;




/ plots(only)= freqplot(type=dot orient = vertical);

Run;

ods graphics off;



ods graphics on ;Proc freq data = sashelp.heart;tables sex * bp_status

/ plots (only) = freqplot;Run;

ods graphics off;




/ plots (only) = freqplot(twoway = grouphorizontal);

Run;

ods graphics off;




/ plots (only) = freqplot(twoway = stacked);

Run;

ods graphics off;




/ chisq plots(only)= deviationplot (type = dot);

Run;

ods graphics off;










SAS/STAT (ANOVA, GLM, MIXED, LIFETEST, etc.) SAS/QC (CAPABILITY, SHEWHART, etc.) Base SAS (CORR, FREQ, UNIVARIATE) SAS/ETS (ARIMA, TIMESERIES, VARMAX, etc.) Other (HPF, HPFENGINE, SAS Risk Dimensions)


Create Statistical Graphs Using SG Procedures

New SAS/GRAPH Procedures producing statistical graphs

SGPLOT

SGPANEL

SGSCATTER


Proc sgplot data = sashelp.class;scatter x = height y = weight

/ group = sex name = “scatter”;loess x = height y = weight

/ group = sex clm clmtransparency = 0.6

nomarkers;keylegend “scatter”

Run;



Proc sgpanel data = sashelp.heart;

panelby weight_status bp_status / layout = lattice;

reg x = height y = weight / cli;

Run;



Proc sgscatter data = sashelp.heart;

plot (diastolic systolic ) * (weight height) / group = weight_status;

Run;



Proc sgscatter data = sashelp.heart;

compare x = (diastolic systolic ) y = weight;

Run;


Animated Bubble Chart by Hans Rosling

Create Statistical Graphs Using GTL

Proc template;define statgraph simplereg; beginggraph;

entrytitle “Simple Scatter Plot with Regressin

Line”;layout overlay; scatterplot x = height y = weight; regressionplot x = height y = weight;endlayout;

endgraph;end;

Run;


Proc sgrender data = sashelp.classtemplate = simplereg;

Run;



Proc template;define statgraph myplot; beginggraph;

entrytitle “Loess Fit by Gender”; layout overlay; scatterplot x = height y = weight

/ group = sex name = ‘sex’; loessplot x = height y = weight

/ group = sex name = ‘loess’;


layout gridded / autoalign = (topleft);discretelegend ‘sex’ ‘loess’

/ opaque = false border = true ;endlayout;

endlayout;endgraph;

End;Run;


ODS Graphics Designer





ODS Graphics Editor

ODS Graphics Editor

Task What to Use?

Graphs for statistical analyses Statistical proceduresStand-alone graphs SG ProceduresHighly customized graphs GTLEnhancing graphs for presentation ODS Graphics EditorGraphs without programming ODS Graphics Designer

Conclusion

ODS Statistical Graphics is an exciting new functionality provided by SAS. It greatly enhances the ability of data visualization

integrates the graphic display with the tabular output

automates the production of statistical graphics

maintains the ability to customize the displays by modifying the templates and styles

create statistical graphs without knowledge of programming

Conclusion

With SAS ODS Graphics, simpler and minimal coding is required to generate high quality statistical graphs. By spending less time in coding to improve the visual appearance of graphs for data visualization, we can focus more on the statistical analysis.

References

SAS/STAT 12.3 User’s Guide Chapter 21 Statistical Graphics Using ODS

SAS/STAT 12.3 User’s Guide Chapter 22 ODS Graphics Template Modification

SAS/STAT 12.3 User’s Guide SAS User’s Guide for SG Procedures, Graph Template

Language

About the SpeakerSpeaker:

Location of company:

Telephone:E-Mail:

Wei Cheng

Isis Pharmaceuticals, Inc.2855 Gazelle CourtCarlsbad, CA 92010

(760) [email protected]

Documents

Taking the Leap - Using ODS Statistical Graphics for Data Visualization