Effective Data Visualization with SASGRAPH

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Effective Data Visualization with SAS/GRAPH

• Samuel T. Croker

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SAS/GRAPH Resources

• SAS Documentation
• SAS Samples and FAQ on support.sas.com
• SAS-L
• SGF(SUGI) and Regional SUG papers at
  www.lexjansen.com
• www.sascommunity.org

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Keys to SAS/GRAPH

• GOPTIONS Statement
• File output
• Graphic Devices
• SYMBOL Statement
• Everything about the data series
• AXIS Statement
• Everything about the axes
• File Output
• Graphic Devices
• Annotate Datasets
• Everything else

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proc gplot datasashelp.air plot
airdate runquit
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symbol1 colorblue valuedot height0.5
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symbol1 colorblue valuedot height0.5
interpoljoin
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symbol1 colorblue valuedot height0.5
interpolrlcli95
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symbol1 colorblue valuedot height0.5
interpolrQclm95
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More Symbol Statement Functionality

• Step plots
• Comparative Box plots
• Hi-low plots
• STD plots

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axis1 value(angle45 h0.75) minornone axis2
label(angle90) proc gplot datasashelp.air p
lot airdate /haxisaxis1 vaxisaxis2 runquit
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proc gplot datasashelp.air plot airdate
/haxisaxis1 vaxisaxis2 href400
vref01jan1959d chrefred cvrefgreen
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proc gplot datasashelp.air plot airdate
/haxisaxis1 vaxisaxis2 grid lhref1
lvref1 chrefbwh cvrefbwh
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goptions ftext'Tahoma' htext2
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You may need to sort by your x axis if you join
or spline.
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What next

• Ok, so I see that there is a lot within SAS/GRAPH
  that I need to explore, but how do I make my
  existing graphs look really good?
• File Output
• Graphic Devices
• Make em BIG
• Consider using LaTeX

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Output to File
Copy/paste into MS Office from SAS Graph Window
can have unexpected results

• filename outgraph c\graphs\myGraph.wmf"
• goptions
• resetall
• devicewmf
• gsfnameoutgraph

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Graphic Devices

• Graphic Devicesgraph output formats
• Vector (EMF,WMF PDF)
• Drawn from instructions
• Looks good
• Raster (JPEG, GIF, PNG)
• Smoothed image
• Dithering
• Bitmap

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GPLOVRL1
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Resolution

• Graphs produced small tend to have bad
  resolution.
• The default is small
• Conclusion Make em Big!

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GOPTIONS for WMF _at_ 4x

• filename outgraph c\graphs\myGraph.wmf"
  goptions resetall devicewmf gsfnameoutgraph
  xpixels2880
• ypixels1920
• gunitpct
• border
• cbackwhite
• colors(black blue green red)
• ftextswiss
• ftitleswissb
• htitle6
• htext4

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WMF Scaled 4x
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Adjustments

• symbol1 valuedot colorred interpoljoin
  height3
• symbol2 fontmarker valueC colorblue
  interpoljoin height2
• axis1 order(1955 to 1995 by 5) offset(2,2)
  labelnone major(height4) minor(h
  eight1)
  width3
• axis2 order(0 to 6000 by 1000) offset(0,0)
• labelnone
• major(height4)
• minor(height1)
• width3

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WMF Scaled 4x Adjusted
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SAS Marker Font
symbol1 fontmarker valueC colorblue
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WMF TrueType Fonts

• proc fontreg modeall MSGLEVELVERBOSE
• fontpath 'c\windows\fonts'
• run

Tahoma Arial Courier New Helvetica Comic Sans MS
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Tahoma
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Courier
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Arial
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Verdana
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Comic Sans MS
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TrueType Fonts

• NOTE The font Minya Nouvelle (Style Regular,
  Weight Normal) has been replaced in the SAS
  Registry at
• CORE\PRINTING\FREETYPE\FONTS\ltttfgt Minya
  Nouvelle. Since it is a TRUETYPE font, it must
  be referenced as ltttfgt Minya
• Nouvelle in SAS. The font resides in file
  c\windows\fonts\MINYN___.TTF. So use ltttfgt Minya
  Nouvelle
• The way that these interact with SAS can be
  different. We will see in 9.2

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G3D Procedure
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G3D Procedure WMF
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GCONTOUR
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GCONTOUR
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SAS/GRAPH Resources

• SAS Documentation
• SAS Samples and FAQ on support.sas.com
• SAS-L
• SGF(SUGI) and Regional SUG papers at
  www.lexjansen.com
• www.sascommunity.org

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PDFC and LaTeXExample