super demo: statistical graphics with ods · procedures create object with graph data, metadata ods...

ODS Graphics Super Demo

Copyright © 2010, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration 1

Super Demo:Statistical Graphics with ODS

Presented by:

Cynthia Zender

2

Today's Topics Discuss differences between traditional SAS/GRAPH

procedures and ODS GRAPHICS Framework

Demonstrate selected examples of using ODS GRAPHICS ON/OFF with SAS/STAT procedures.

Demonstrate the new "SG" procedures: SGPLOT, SGPANEL, SGSCATTER and SGRENDER.

2



3

New Graph Production Methods

With ODS Statistical Graphics in SAS 9.2

– Statistical procedures create graphs as automatically as they create tables

– New SAS/GRAPH procedures streamline the process of making graphs for exploring data and making customized displays for novel types of analysis

3

4

ODS Statistical Graphics Functionality

Automates creation of graphs by statistical procedures that

have been modified to use ODS Graphics Procedures create object with graph data, metadata

ODS binds object with template description of graph

ODS renders graph

4



5

ODS GRAPHICS and the LISTING Destination

5

Method of CreatingGraphics for LISTING

Destination

ODS GRAPHICS

OFF

ODS GRAPHICS

ON

SAS/STAT procedure syntax (also, SAS/HPF, SAS/ETS and other procedures that support ODS Graphics)

Procedure options would impact style

Procedures always use style template information.

Graph Output Viewed GRAPH1 Window

Default Picture Viewer Application

Tabular Output Viewed Listing Window Listing Window

Image Format GRSEG entry PNG file

6

Sending a Graph to the SAS Graph1 WindowThe LISTING destination creates output that is placed automatically in the SAS Output Window (tabular output) or in the Graph1 Window (graphical output). In the SAS windowing environment, the SAS Output window is always open unless you close it.

6

Graphical Procedure

OutputODS LISTING

SAS Graph1 Window



7

Review GCHART ExampleConsider this SAS/Graph code:

7

proc gchart data=sashelp.heart;vbar deathcause / legend descending

subgroup=smoking_statusaxis = 0 to 650 by 50 name='LVbar';

format deathcause $dc.;run;quit;

8

GCHART ExampleThe GSTYLE option controls whether the SAS Style template is used for SAS/Graph procedures.

8

options nogstyle options gstyle=on;ods listing style=ocean;



9

SAS/Graph Procedures and GSTYLE Option

9

Method of CreatingGraphics for LISTING

DestinationNOGSTYLE

OptionGSTYLEOption

SAS/Graph procedure syntax GOPTIONSand procedure syntax would impact style

Style template will set style, GOPTIONS and procedure syntax willoverride style template.

Graph Output Viewed GRAPH1 Window

GRAPH1 Window

Tabular Output Viewed Listing Window Listing Window

Image Format GSEG entry (with no style template informationused)

GSEG entry (with style template information used)

10

Output Creation with ODSWhen you create output files with ODS, all tabular and graphical output uses the active style template, as long as the GSTYLE option is turned on and the destination supports style templates.

10

ODS LISTING CLOSE;ODS destination FILE = "filename.ext" STYLE=egdefault;

SAS/Graph or SAS/STAT or other procedure code to generate a report

ODS destination CLOSE;



11

HTML Syntax Model for Graphics CreationYou use slightly different syntax model for HTML-based destinations, which use an HTML <IMG> tag to point to a graphical image location.

11

ODS HTML PATH='<path for output>' (URL=NONE)GPATH='<path for images>' (URL=NONE)FILE = "filename.html" STYLE=egdefault;

SAS/Graph code to generate a report

ODS HTML CLOSE;

12

RTF and PDF Syntax Model Images for the RTF and PDF destinations are embedded in the ODS output file. There is no equivalent to an <IMG> tag for the RTF and PDF destinations.

12

ODS RTF FILE = "filename.rtf" STYLE=journal;SAS/Graph code to generate a report

ODS RTF CLOSE;

ODS PDF FILE = "filename.pdf" STYLE=journal2;SAS/Graph code to generate a report

ODS PDF CLOSE;



13

Some Destinations Supported by ODS Graphics

Destination Viewer Graphics File Types

HTML Web browser PNG (default), GIF, JPEG, …

RTF Word processor, such as Microsoft Word

Embedded in RTF file

PS PostScript viewer, such as GSview

Embedded in PostScript file

PDF PDF viewer, such as Adobe Reader

Embedded in PDF file

LATEX PostScript or PDF viewer after compiling LaTeX file

PostScript (default), EPSI, GIF, JPEG, PDF, PNG

LISTING Default viewer in your system for file type

PNG (default), GIF, BMP, DIB, EMF, EPSI, JFIF, JPEG, …

13

14

Some Recommended Styles

Style Description

DEFAULT Color style intended for general-purpose work. This is the default for the HTML destination.

STATISTICAL Color style recommended for output in Web pages or color print media. This is the style used in SAS/STAT 9.2 documentation.

ANALYSIS Color style with a somewhat different appearance from STATISTICAL.

JOURNAL and JOURNAL2

Gray-scale and pure black-and-white styles, respectively. Recommended for graphs in black-and-white publications

RTF Used to produce graphs to insert into a Microsoft Word document or a Microsoft PowerPoint slide.

14



15

Statistical Procedures that Support ODS Graphics in SAS 9.2

Base SAS * SAS/STAT SAS/QC * SAS/ETS

CORR

FREQ

UNIVARIATE

ANOVA

BOXPLOT

CALIS

CLUSTER

CORRESP

FACTOR

FREQ

GAM

GENMOD

GLIMMIX

GLM

GLMSELECT

KDE

KDRIGE2D

LIFEREG

LIFETEST

LOESS

LOGISTIC

MCMC

MDS

MI

MIXED

MULTTEST

NPAR1WAY

PHREG

PLS

PRINCOMP

PRINQUAL

PROBIT

QUANTREG

REG

ROBUSTREG

RSREG

SEQDESIGN

SEQTEST

SIM2D

TCALIS

TRANSREG

TTEST

VARIOGRAM

ANOM

CAPABILITY

CUSUM

MACONTROL

PARETO

RELIABILITY

SHEWHART

ARIMA

AUTOREG

ENTROPY

EXPAND

MODEL

PANEL

RISK

SIMILARITY

SYSLIN

TIMESERIES

UCM

VARMAX

X12

15* experimental in SAS 9.2

16

PROC TRANSREG Example

16

ods graphics on;ods html style=statistical;proc transreg data=sashelp.cars plots=(all);

model BoxCox(msrp/convenient lambda=-2 to 2 by 0.05) =qpoint(horsepower MPG_Highway Weight);

run;ods html close;ods graphics off;



17


17




18


18






19


19




20


20






21


21




odsg01d01

22


22






23

PROC UNIVARIATE Defaults with ODSUsing PROC UNIVARIATE and the PPPLOT statement in SAS 9.2 with an ODS style template results in a probability plot that uses the ODS style template.

23

ods html path='.' (url=none)file='univ_orig.html' style=analysis;

proc univariate data=sashelp.heart;var AgeCHDdiag;ppplot;

run;

ods html close;

24

Univariate ExampleIf you submitted this PROC UNIVARIATE code with the PPPLOT statement, you could generate this output (viewed in a browser):

24



25

ODS Graphics ON/OFF and PROC UNIVARIATEThe same code using the ODS Graphics ON/OFF produces a slightly different result.

25

ods html path='.' (url=none)file='univ_orig.html' style=analysis;

ods graphics on;proc univariate data=sashelp.heart;var AgeCHDdiag;ppplot;

run;ods graphics off;ods html close;

ODS GRAPHICS ON/OFF support for PROC UNIVARIATE is experimental in SAS 9.2, Phase 2.

26

ODS Graphics and PROC UNIVARIATE

26 demo4



27

Compare Two Outputs

27

without ODS Graphics

with ODS Graphics

28

ODS Graphics and PROC UNIVARIATE

28

Output from ODS Graphics has title.Marker symbol circle (not plus).Analysis style colors and fonts used.



29

PROC REG

29

ods html path='.' (url=none)gpath='.'(url=none)file='reg_odsg.html' style=analysis;

ods graphics on / imagefmt=jpegimagename='Reg';

proc reg data=sashelp.heart;model Cholesterol = AgeCHDDiag;

quit; ods graphics off;

ods html close;

A PATH or GPATH value of '.' will direct all output to your current working directory.

30

PROC REG

30

ods html path='.' (url=none)gpath='.'(url=none)file='reg_odsg.html' style=analysis;


proc reg data=sashelp.heart;quit; ods graphics off;

ods html close;ods html close;

A PATH or GPATH value of '.' will direct all output to your current working directory (C:\temp\output) in this case.



31

PROC REG Tabular Output

31

Tabular Results Viewed in Web Browser

32

PROC REG Graphic Output

32

Fit Diagnostics Paneled Image



33


33


Scatter Plot for Residuals

34


34


Scatter Plot for ResidualsFit Plot



35

PROC REG

35

ods html path='.' (url=none)gpath='.'(url=none)file='reg_select.html' style=analysis;


ods select ParameterEstimates FitPlot;proc reg data=sashelp.heart;

model Cholesterol = AgeCHDDiag;quit; ods graphics off;

ods html close;

36

Results from ODS SELECT

36

Numbers will keep incrementing until index counter is reset.



37

Resetting the Index CounterTo reset the index, use the RESET=INDEX option of the ODS GRAPHICS ON statement.

37

ods html path='.' (url=none)gpath='.'(url=none)file='reg_reset.html' style=analysis;

ods graphics on / reset=indeximagefmt=pngimagename='Reg';

ods select FitStatistics FitPlot;proc reg data=sashelp.heart;

model Cholesterol = AgeCHDDiag;quit; ods graphics off;

ods html close;

38

Counter is ResetNote that the graphic image name does not have a numeric suffix.

38

If the JPEG image format had been selected, instead of PNG, this image would have overwritten the original Reg.jpeg file created in the first example.

Example 1

Example 2

Example 3



39

PROC ANOVA

39

ods html path='.' (url=none)gpath='.' (url=none)file='anova.html' style=analysis;

ods graphics on;

proc anova data = sashelp.heart;class Cholesterol;model AgeatDeath = Cholesterol;format cholesterol chst.;

run;quit;

ods graphics off;ods html close;

40

PROC ANOVA Tabular Output

40



41

PROC ANOVA Graphic Output

41

42

Graph Gallery for ODS Automatic Graphs with selected SAS/STAT Procedures

42

ods graphics on;

. . . SAS/STAT or SAS/ETS orSAS/HPF procedure of choice . . .

ods graphics off;

For more information about the appropriate syntax for your procedure of choice, consult the SAS/STAT documentation section entitled, “Statistical Graphics Using ODS”.



43

SAS/STAT Documentation Section

43

44

PROC REG Documentation

44



45

PROC BOXPLOT Documentation

45

46

Graph Gallery Main Effects Plot with GLM

46



47

Graph Gallery ANCOVA Plot with GLM

47

48

Graph Gallery Survival Plot with LIFETEST

48



49

Graph Gallery Residuals Plots with MIXED

49

50

Graph Gallery Component Plots with TIMESERIES

50



51

Graph Gallery Sliced Contour Plots with RSREG

51

52

Graph Gallery Bivariate Density Plot with KDE

52



53

Graph Gallery Bivariate Histogram with KDE

53

54

Graph Gallery Control Chart with SHEWHART

54



55

What Are The Statistical Graphics ProceduresWhen you use ODS GRAPHICS ON/OFF with statistical procedures, graphical output is automatically produced, based on the procedure syntax.

The new SAS/Graph statistical graphics procedures (also called the SG procedures) allow you to create statistically relevant graphical output without invoking a specific statistical procedure first. The SG procedures are:

SGPLOT

SGPANEL

SGSCATTER

SGRENDER.

55

56

SGPLOT OverviewThe SGPLOT procedure

creates one or more plots and overlays them on a single set of axes.

creates histograms, regression plots, scatter plots and line plots.

provides statements and options to control the appearance of your graph, including legends and reference lines.

56



57

SGPLOT ExamplesThe SGPLOT procedure syntax is very straightforward to use. Model syntax to create an HTML file is shown below:

57

<ODS DESTINATION OPEN statement>ODS GRAPHICS / imagename='name';

PROC SGPLOT DATA = libref.filenameDESCRIPTION= 'text-string';

. . . single or multiple SGPLOT Statements . . .RUN;

<ODS DESTINATION CLOSE statement>

The DESCRIPTION option is used for the HTML ALT= attribute of the <IMG> tag. The name for the image can be set with the IMAGENAME option of the ODS GRAPHICS statement. The ODS GRAPHICS environment is always ON when you use the SG procedures.

58

SGPLOT Gallery: VBAR StatementThe following syntax produces a VBAR chart.

58

proc sgplot data=sashelp.heart;vbar chol_status;

run;



59

SGPLOT Gallery: VBAR StatementThe following syntax produces a VBAR chart.

HTML Outputusing OCEANstyle:

59

proc sgplot data=sashelp.heart;vbar chol_status;

run;

60

SGPLOT Program

60

The equivalent SGPLOT program to GCHART :

ods html path='c:\temp' (url=none)file='vbar_sgplot.html' style=analysis;

ods graphics on;proc sgplot data=heart;vbar deathcause / group=smoking_status ;format deathcause $dc.;

run;quit;. . . more code . . .

demo7



61

ods html path='c:\temp' (url=none)file='vbar_sgplot.html' style=analysis;

ods graphics on;proc sgplot data=heart;vbar deathcause / group=smoking_status ;format deathcause $dc.;

run;quit;. . . more code . . .

SGPLOT Program

61

The equivalent SGPLOT program to VBAR:

demo7

62

Different SGPLOT Program

62

A different SGPLOT with DATE variable (on stock information):

. . . more code . . .

proc sgplot data=ibm;vbar date / response=volume;

run;quit;ods graphics off;

ods html close;

demo7



63

Different SGPLOT Program

63

A different SGPLOT with DATE variable (on stock information):

. . . more code . . .

proc sgplot data=ibm;vbar date / response=volume;

run;quit;ods graphics off;

ods html close;

demo7

64

Plotting a Line

64

Adding a line plot only needs the VLINE statement::

ods html path='c:\temp' (url=none)file='sgplot_vline.html' style=analysis;

ods graphics on;

proc sgplot data=ibm;vbar date / response=volume;vline date / response=close y2axis;

run;

ods graphics off;ods html close;;

demo8



65

Plotting a Line

65

Adding a line plot only needs the VLINE statement::

ods html path='c:\temp' (url=none)file='sgplot_vline.html' style=analysis;

ods graphics on;

proc sgplot data=ibm;vbar date / response=volume;vline date / response=close y2axis;

run;

ods graphics off;ods html close;;

demo8

66

SGPLOT Gallery: VBOX StatementThe following syntax produces a VBOX chart.

66

proc sgplot data=sashelp.heart;vbox AgeatDeath / category=chol_status;

run;



67

proc sgplot data=sashelp.heart;vbox AgeatDeath / category=chol_status;

run;

SGPLOT Gallery: VBOX StatementThe following syntax produces a VBOX chart.


67

68

SGPLOT Gallery: REG StatementThe following syntax produces a REG plot.

68

proc sgplot data=sashelp.heart;reg x=cholesterol y=ageatdeath / CLM CLI;run;



69

proc sgplot data=sashelp.heart;reg x=cholesterol y=ageatdeath / CLM CLI;run;

SGPLOT Gallery: REG StatementThe following syntax produces a REG plot.


69

70

SGPLOT Gallery: SCATTER StatementThe following syntax produces a SCATTER plot with an ELLIPSE overlaid on the plot.

70

proc sgplot data=sashelp.heart;scatter x=AgeatDeath y=AgeCHDDiag; ellipse x=AgeatDeath y=AgeCHDDiag; keylegend / location=inside

position=bottomright;run;

Every statement produces output that is overlaid into the graph area. Therefore, your statements should be specified so that output from one statement does not overlay output from a previous statement.



71

SGPLOT Gallery: SCATTER StatementThe following syntax produces a SCATTER plot with an ELLIPSE and KEYLEGEND overlaid on the plot.


71

proc sgplot data=sashelp.heart;scatter x=AgeatDeath y=AgeCHDDiag; ellipse x=AgeatDeath y=AgeCHDDiag; keylegend / location=inside

position=bottomright;run;

SCATTER

ELLIPSE

KEYLEGEND

72

Legends with Multiple PlotsIf you have multiple plot statements, not all legends will be shown.

72

ellipse x=cholesterol y=ageatdeath/ alpha=0.05;ellipse x=cholesterol y=ageatdeath/ alpha=0.25;ellipse x=cholesterol y=ageatdeath/ alpha=0.5;scatter x=cholesterol y=ageatdeath/ group=sex;

Automatic Legend

odsg04d04



73

Assigning Plot NamesWhen you assign names to your plot statements, you can control legend title, placement and appearance using the statement names in the KEYLEGEND statement.

73

proc sgplot data=odssg1.heart;where chol_status = 'High' and cholesterol gt 350;ellipse x=cholesterol y=ageatdeath / alpha=0.05 name='a05';ellipse x=cholesterol y=ageatdeath / alpha=0.25 name='a25';ellipse x=cholesterol y=ageatdeath / alpha=0.5 name='a50';scatter x=cholesterol y=ageatdeath / group=sex name='sc';title 'Using Multiple Legends with NAME= Values';keylegend 'a05' 'a25' 'a50'

/ title="Alpha Levels" across=1location=inside position=topright;

keylegend 'sc' / title="Gender" down=1location=outside position=bottom ;

run;

odsg04d04

74

KEYLEGEND Results

74

keylegend 'sc' / title="Gender" down=1location=outside position=bottom ;

keylegend 'a05' 'a25' 'a50' / title="Alpha Levels" across=1location=inside position=topright;



75

SGPLOT Gallery: SERIES StatementThe following syntax produces two SERIES plots.

75

proc sgplot data=clinic_stats;where clinic contains 'East';series y=num_surg x=month / markers

curvelabel = ' Surgeries ' curvelabelloc=inside;

series y=tot_pts x=month / y2axis markers curvelabel = ' Patients ' curvelabelloc=inside;

xaxis label = 'Month' grid;yaxis label = 'Number Surgeries'

values=( 0 to 100 by 10) grid;y2axis label='Total Patients'

values=(0 to 1000 by 100);run;

76

SGPLOT Gallery: SERIES StatementThe following syntax produces two SERIES plots.

76

proc sgplot data=clinic_stats;where clinic contains 'East';series y=num_surg x=month / markers

curvelabel = ' Surgeries ' curvelabelloc=inside;

series y=tot_pts x=month / y2axis markers curvelabel = ' Patients ' curvelabelloc=inside;

xaxis label = 'Month' grid;yaxis label = 'Number Surgeries'

values=( 0 to 100 by 10) grid;y2axis label='Total Patients'

values=(0 to 1000 by 100);run;

HTML Output using OCEAN style:



77

Enhanced PlotThis INSET statement uses a single text string and options to place the inset text onto the graph.

77

inset "Includes data from Central and East clinics" /border position=top;

odsg04d01

78

Using a Title with the INSET TextWith the TITLE= option, you can give your inset box a title.

78

inset "Includes data from Central and East clinics" /border position=top title='Inset Title';

odsg04d01



79

Using Value Lists You can also use value lists with the INSET statement. The values can be hard-coded or supplied by macro variables.

79

inset (" Minimum" = "&minsurg" " Mean" = "&avgsurg" " Max"="&maxsurg") / bordertitle='Clinic Surgeries' position=top;

odsg04d01

80

Using Unicode CharactersYou can also insert Unicode characters into your INSET statement text. If you have macro variables that hold the values for mu and sigma:

80

ods escapechar='~';title 'Histogram and Density -- Framingham Heart Study';proc sgplot data = odssg1.heart;

histogram cholesterol;density cholesterol / type = normal;density cholesterol / type = kernel;inset ("~{unicode mu}"="&mn" "~{unicode sigma}"="&sd") /

position=topright border;run;

odsg04d01



81

SGPANEL OverviewThe SGPANEL procedure

creates a panel of graph cells for the values of one or more classification variables.

uses different layouts and panels to display multiple graphs.

displays the differing plot types and overlay plots in the graph cells based on default layouts or specific layouts.

provides several layout types for plot placement.

81

82

SGPANEL ExamplesThe SGPANEL procedure model syntax is shown below

82

<ODS DESTINATION OPEN statement>ODS GRAPHICS / imagename='name';

PROC SGPANEL DATA = libref.filenameDESCRIPTION="text-string";

PANELBY classification-variable(s) / <panel-options>;. . . single or multiple SGPANEL Statements . . .RUN;

<ODS DESTINATION CLOSE statement>



83

SGPANEL Gallery: PANELBY StatementThe following syntax produces a paneled chart.

83

proc sgpanel data=sashelp.heart;panelby sex; loess x=ageatdeath y=agechddiag /

clm alpha=.1;run;

(650)837‐7934(650)837‐7934

The statements that you can use with the SGPANEL procedure are generally the same as statements that you would use with the SGPLOT procedure. Consult the documentation to determine which plot statements can be used together in the SGPANEL procedure.

84

SGPANEL Gallery: PANELBY StatementThe following syntax produces a paneled chart.


84

proc sgpanel data=sashelp.heart;panelby sex; loess x=ageatdeath y=agechddiag /

clm alpha=.1;run;



85

SGPANEL Gallery: LAYOUT OptionsThe default LAYOUT option is the PANEL option. Other choices are COLUMNLATTICE, ROWLATTICE and LATTICE (for two classifications variables).

85

proc sgpanel data=sashelp.heart;panelby chol_status / layout=columnlattice

novarname; loess x=ageatdeath y=agechddiag /

clm alpha=.1;run;

86

SGPANEL Gallery: COLUMNLATTICE LayoutHTML Output using OCEAN style:

86

panelby chol_status / layout=columnlatticenovarname;



87

SGPANEL Gallery: ROWLATTICE LayoutHTML Output using OCEAN style:

87

panelby chol_status / layout=rowlatticenovarname;

88

SGPANEL Gallery: LATTICE LayoutThe following syntax produces a panelled chart in a lattice layout using two classification variables.

88

proc sgpanel data=sashelp.heart;panelby chol_status sex /

layout=lattice novarname; loess x=ageatdeath y=agechddiag /

clm alpha=.1;run;

The LATTICE layout supports the use of exactly two classification variables. However, you can also use a BY statement, with the PANELBY statement to allow more flexibility.



89

SGPANEL Gallery: LATTICE LayoutHTML Output using OCEANstyle:

89

90

SGSCATTER OverviewThe SGSCATTER procedure

creates a panel of graph cells for the values of one or more classification variables.

uses different layouts and panels to display multiple graphs.

displays the differing plot types and overlay plots in the graph cells based on default layouts or specific layouts.

provides several layout types for plot placement.

90



91

SGSCATTER StatementsThe SGSCATTER procedure creates a paneled graph of scatter plots for multiple combinations of variables, depending on the plot statement that you use. The SGSCATTER produces graphs using one of these three statements:

PLOT statement

COMPARE statement

MATRIX statement.

91

92

SGSCATTER PLOT Statement ExampleThe PLOT statement creates multiple plots in a paneled layout.

92

proc sgscatter data=sashelp.heart;plot diastolic*agechddiag

diastolic*ageatdeath;run;



93

SGSCATTER Example: PLOT StatementHTML Output using OCEAN style:

93

94

SGSCATTER COMPARE Statement ExampleThe COMPARE statement creates multiple plots in a paneled layout with a shared axis.

94

proc sgscatter data=sashelp.heart;compare x=(agechddiag ageatdeath)

y=(diastolic)/ group=chol_status ;

run;



95

SGSCATTER Example: COMPARE StatementHTML Output using OCEAN style:

95

96

SGSCATTER MATRIX Statement ExampleThe MATRIX statement creates a scatter plot matrix. Each of the variables that you specify are graphed against each other to create the graph.

96

proc sgscatter data=sashelp.heart;where chol_status='High';matrix ageatdeath cholesterol weight /

diagonal=(histogram kernel);run;



97

SGSCATTER Example: MATRIX StatementHTML Output using OCEAN style:

97

98

Using the SGRENDER ProcedureIf a Graph Template named "BOX_ELIP" has been created with PROC TEMPLATE syntax, it can be rendered with the following code:

98

ods html path='.' (url=none)gpath='.' (url=none)file='odssg01d13.html'style=ocean;

proc sgrender data=sashelp.hearttemplate=graph.box_elip;

where chol_status ne ' ';run;

ods _all_ close;



99

HTML ResultsHTML Output using OCEAN style:

99

100

MORE ABOUT GRAPH TEMPLATES (SELF-STUDY)

100



101

SGRENDER OverviewThe SGRENDER procedure

produces graphical output from templates that are created with the Graph Template Language (GTL).

renders the GTL syntax and allows for the data to be bound to a graph template composed of more customized layouts and graphs that are beyond the scope of the Statistical Graphics procedures.

You can use the TMPLOUT= option with the SG procedures to create GTL syntax that can be modified and used with SGRENDER.

101

102

Deconstructing the Graph LayoutTo understand the Graph Template statements, it is useful to identify the text and layout areas on the graph:

102

EntryTitle

EntryFootnote

Column2Headers

ColumnHeaders



103

Layout SchematicThis is the conceptual layout schematic:

103

Column 1Layout/

Endlayout block for graph

Column 2Layout/

Endlayout block for graph

EntryFootnote Area

Layout Lattice statement to define 2 columns

Endlayout statement

Column2Headers Column2Headers

ColumnHeadersColumnHeaders

EntryTitle Area

104

Graph Template DefinitionEvery beginning statement must be ended.

104

proc template;define statgraph graph.box_elip;begingraph;EntryTitle, EntryFootnote statements

layout lattice;

layout overlay ;BoxPlot statements;

endlayout;

layout overlay ;ScatterPlot and Ellipse statements;

endlayout;

endlayout;

endgraph;end;run;



105

Graph Template DefinitionThe Graph Template definition uses PROC TEMPLATE.

105

proc template;define statgraph graph.box_elip;begingraph;EntryTitle "Want to Use GTL" /; EntryFootnote "EntryFootnote to Span Both Graphs";

layout lattice / columns=2 columngutter=10;column2headers;entry "Boxplot";entry "Prediction Ellipse";

endcolumn2headers;

columnheaders;entry "Graph 1";entry "Graph 2";

endcolumnheaders;

Begin StatGraph Definition

106


106

layout overlay / yaxisopts=( Label="Age At Death" type=linear linearopts=( tickvaluelist=( 40 60 80 100 )

viewmin=35 viewmax=100 ) );BoxPlot X=chol_status Y=AgeAtDeath /

SortOrder=Data primary=true LegendLabel="Age at Death" NAME="VBOX";

endlayout;

end Boxplot Layout



107


107

layout overlay / yaxisopts=( Label="Age At Death" type=linear linearopts=( tickvaluelist=( 40 60 80 100 )

viewmin=35 viewmax=100 ) );ScatterPlot X=Weight Y=AgeAtDeath /

primary=true Group=Chol_Status LegendLabel="Age at Death" NAME="SCATTER";

Ellipse X=Weight Y=AgeAtDeath / Type=Predicted LegendLabel="95% Prediction Ellipse" NAME="ELLIPSE";

DiscreteLegend "SCATTER"/ Location=Outside halign=center valign=bottom;

endlayout;endlayout;endgraph;end;run;

end Scatterplot Layout

end Lattice Layout

end Statgraph definition

108

More About Graph Templates

Graph templates are programs, written in the Graph Template Language, that describe individual graphs.

SAS provides a default template for every graph produced by a procedure, so you never need to write a template!

You can modify the default templates to make persistent changes that apply every time you run your program.

You can also modify the template code generated by the SG procedures to make custom graphs for use with the SGRENDER procedure.

108



109

Summary: Two Ways to Modify Your Graphs

Graph Template Changes ODS Graph Editor

Appropriate for SAS programmer familiar with the Graph Template Language

Statistical end user

Approach Programming Point-and-click

Type of change Persistent Immediate

Duration Whenever program is re-run Current graph only

Application Batch processing of graphs Papers, presentations

Approach Programming Point-and-click

File saved Modified graph template PNG or SGE

109

super demo: statistical graphics with ods · procedures create object with graph data, metadata ods...

Documents