The NETDRAW Procedure

Example 7.11: Zoned Network Diagram

This example illustrates zoned network diagrams. The Widget Manufacturing project is used to illustrate some aspects of this feature. The data set DETAILS contains a variable phase, which identifies the phase of each activity in the project. This data set is merged with the Activity data set from Example 7.1, WIDGET, to produce the data set NETWORK that is input to PROC NETDRAW. The ZONE= option divides the network diagram into horizontal zones based on the project phase. The ZONEPAT option causes the activities in each zone to be drawn using a different pattern. The resulting network diagram is shown in Output 7.11.1.

  
    data details; 
       format task $12. phase $13. descrpt $30. ; 
       input task & phase $ descrpt & ; 
       datalines; 
    Approve Plan  Planning       Develop Concept 
    Drawings      Engineering    Prepare Drawings 
    Anal. Market  Marketing      Analyze Potential Markets 
    Write Specs   Engineering    Write Specifications 
    Prototype     Engineering    Build Prototype 
    Mkt. Strat.   Marketing      Develop Marketing Concept 
    Materials     Manufacturing  Procure Raw Materials 
    Facility      Manufacturing  Prepare Manufacturing Facility 
    Init. Prod.   Manufacturing  Initial Production Run 
    Evaluate      Testing        Evaluate Product In-House 
    Test Market   Testing        Test Product in Sample Market 
    Changes       Engineering    Engineering Changes 
    Production    Manufacturing  Begin Full Scale Production 
    Marketing     Marketing      Begin Full Scale Marketing 
    ; 
    data network; 
       merge widget details; 
       run; 
  
    pattern1 v=e c=green; 
    pattern2 v=e c=red; 
    pattern3 v=e c=magenta; 
    pattern4 v=e c=blue; 
    pattern5 v=e c=cyan; 
  
    title  j=l h=1.5 ' Project: Widget Manufacture'; 
    title2 j=l h=1.5 ' Date: December 1, 2003'; 
    footnote j=r 'Zoned Network Diagram '; 
    proc netdraw data=network graphics; 
       actnet / act=task 
                succ=(succ1 succ2 succ3) 
                separatearcs 
                zone=phase zonepat 
                pcompress htext=2; 
       label phase = 'Department'; 
       run;
 

Output 7.11.1: Zoned Network Diagram

Next, the project is scheduled with PROC CPM, and PROC NETDRAW is invoked with the ZONE= and TIMESCALE options. The nodes are placed in different zones as dictated by the ZONE variable, phase, and are aligned along the time axis as dictated by the default ALIGN variable, E_START. The MININTERVAL= option produces one tick mark per week for the duration of the project. The LREF= option identifies the linestyle of the reference lines and the dividing lines between zones. The nodes are colored red or green according to whether or not the corresponding activities are critical (PATTERN statements 1 and 2 from the previous invocation of PROC NETDRAW are still valid).

  
    proc cpm data=network interval=weekday 
             out=sched date='1dec03'd; 
       activity task; 
       succ     succ1 succ2 succ3; 
       duration days; 
       id phase; 
       run; 
  
    footnote j=r 'Zone and Timescale '; 
    proc netdraw data=sched graphics; 
       actnet / act=task succ=(succ1 succ2 succ3) 
                pcompress 
                font = swiss 
                carcs = blue ccritarcs = red 
                cref = cyan 
                caxis = magenta 
                lref = 33 
                id = (task) 
                nodefid 
                nolabel 
                boxwidth = 8 
                htext=2 
                separatearcs 
                timescale 
                mininterval=week 
                autoref 
                linear 
                zone=phase 
                zonespace; 
       label phase = 'Department'; 
       run;
 

Output 7.11.2: Zoned Network Diagram with Time Axis