The Constellation Applet
displays interactive node and link diagrams. These diagrams can show
relationships between nodes and links. The Constellation Applet displays
affinity, sequence, and ring diagrams that are generated out of arc
or associative data sets. The Constellation Applet provides a number
of interactive features by default, as described in Creating Constellation Diagrams.
Enhancements to Constellation
Applet presentations are configured in your
SAS/GRAPH program by specifying arguments in
the DS2CONST macro. The following table lists some of the available
enhancements and the DS2CONST arguments that implement them. These
enhancements enable you to provide data tips and drill-down URLs for
nodes and links, and to increase the visible distinctions between
the data values that are associated with the nodes and links.
Constellation Applet Enhancements
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Specify link weights
and configure a scroll bar that controls the display of links based
on weight.
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LVALUE, MINLNKWT, SCLNKWT
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Lay out the diagram
automatically or as specified in a data set.
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Specify a style sheet
to format the HTML output file.
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BDCLASS, SEPCLASS, SPCLASS,
SSFILE, SSHREF
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Add pop-up data tips
to nodes and links.
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Define drill-down URLs
for nodes and links.
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Specify menu option
text for a drill-down action.
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Specify a browser window
or frame that displays drill-down URLs.
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Add a background color,
image, or drill-down URL.
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IBACKLOC, IBACKPOS,
IBACKURL,
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Specify text colors,
fonts, styles, and sizes.
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NFNTNAME, NSFNTNAM,
CTEXT, CATEXT
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Specify colors for nodes
and links.
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NCOLVAL, NCOLOR, CNODE,
LCOLVAL, LCOLOR, CLINK
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Specify dashed link
lines.
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Note that a number of
enhancements apply only to associative data sets when you specify
the macro argument DATATYPE=ASSOC. The macro argument definitions
identify which features apply only to associative data.
The DS2CONST macro requires
you to specify node and link data sets. As an enhancement, you can
define a node styles data set that contains style information only.
You can use the node styles data set to standardize the appearance
of a series of diagrams, among other uses.