Zoned Network Diagrams
Most projects have at least one natural classification of the
different activities in the project: department, type of work
involved, location of the activity, and so on.
The ZONE= option enables you to divide the
network diagram into horizontal bands or zones corresponding to this
classification. The procedure uses the following rules to place
the nodes in a zoned network diagram:
- The values of the ZONE variable are used
to define as many zones as there are distinct values
of this variable.
- Each node of the network is drawn within its
corresponding zone.
- The number of rows within each zone is determined by the maximum
number of nodes in any given column that correspond to that zone.
- The values of the ZONE variable do not need to be sorted
in any particular order, nor do they need to be grouped by
distinct values.
- The zones are ordered according to the order of appearance of
the different values of the ZONE variable in the
Network data set.
This enables you to choose any order for the zone values.
- For arcs that connect two nodes within the same zone, the
arc lies entirely within the zone; in other words, all the
turning points of the arc have Y coordinates that are
between the minimum and maximum Y coordinates for the zone.
- Each zone is labeled by the value of the ZONE variable unless
the NOZONELABEL option is specified.
- Each zone is separated from the next by a horizontal line drawn
across the width of the network unless the NOZONELABEL option
is specified.
- In the graphics and full-screen modes of invocation of the
procedure,
you can use the ZONEPAT option to color the nodes
in each zone differently using different pattern
statements. In the graphics mode, the first zone uses the first PATTERN statement, the second
zone uses the second PATTERN statement, and so on; in full-screen
mode, the colors available for the device are repeated in cyclic
order. Note that the values of the PATTERN= variable (or the default
_PATTERN variable, if it exists in the
Network data set) override the
node patterns dictated by the ZONEPAT option.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
