The NETDRAW Procedure

Example 7.10: Further Time-Scale Options

In this example, the construction project described in Example 7.7 is used to illustrate some more time-scale options. First, the REFBREAK option indicates breaks in the time axis by drawing a zigzag line down the diagram before each tick mark corresponding to a break. The CREFBRK= and LREFBRK= options control the color and line style for these lines. The network diagram is shown in Output 7.10.1.

  
    title  j=l h=1.5 ' Site: Old Well Road'; 
    title2 j=l h=1.5 ' Date: January 1, 2004'; 
    footnote j=r 'Time Scale Options: Reference Breaks '; 
  
    proc netdraw data=sched graphics; 
       actnet / act = task font=swiss 
                dur = duration 
                succ = (succesr1-succesr3) 
                dp compress separatearcs 
                htext=2 
                timescale refbreak lrefbrk = 33 
                carcs = cyan crefbrk = blue; 
       run;
 

Output 7.10.1: Time-Scaled Network: Reference Breaks

Next, PROC NETDRAW is invoked with the LINEAR option so that there is no break in the time axis. The BOXWIDTH= option limits the size of each node. The diagram is drawn in Output 7.10.2.

  
    footnote j=r 'Time Scale Options: Linear Diagram '; 
  
    proc netdraw data=sched graphics; 
       actnet / act = task font=swiss 
                dur = duration 
                succ = (succesr1-succesr3) 
                dp 
                pcompress 
                novcenter 
                vmargin = 10 
                separatearcs 
                htext=2 
                carcs=cyan 
                id=(task) 
                nodefid 
                nolabel 
                boxwidth=7 
                timescale 
                linear 
                frame; 
       run;
 

Output 7.10.2: Time-Scaled Network: LINEAR Option