No break in sgpanel series plot

[das]

Can someone help me understand why I am not getting a break in my data where there is missing data? The upper left panel should have 5 missing values (i.e., 5 broken lines) at 2nd x-axis tick (which happens to be presently labeled '2').

Here is the log.

NOTE: Copyright (c) 2016 by SAS Institute Inc., Cary, NC, USA.
NOTE: SAS (r) Proprietary Software 9.4 (TS1M5)
      Licensed to WASHINGTON STATE UNIVERSITY - SFA - T&R, Site 70084219.
NOTE: This session is executing on the X64_7PRO  platform.



NOTE: Updated analytical products:

      SAS/STAT 14.3
      SAS/ETS 14.3
      SAS/OR 14.3
      SAS/IML 14.3
      SAS/QC 14.3

NOTE: Additional host information:

 X64_7PRO WIN 6.1.7601 Service Pack 1 Workstation

NOTE: SAS initialization used:
      real time           1.23 seconds
      cpu time            0.45 seconds

1    proc sgpanel data=sasuser.logpr noautolegend ;
2        title'Log of chromogen area by immuno-marker';
3        panelby movip species / layout=lattice onepanel rowheaderpos=left ;
4        series  x=order y=logpr /
5                group=subject
6                markers
7                markerattrs=(symbol=circle)
8                break
9                lineattrs=(pattern=1)
10               ;
11       colaxis type=discrete
12               discreteorder=data
13               valuesdisplay=("CD3" "CD20" "CD79a" "CD163" "Iba1" "IL-17")
14               valuesrotate=diagonal2
15               label="marker"
16               ;
17       rowaxis grid ;
18   run;

NOTE: Writing HTML Body file: sashtml.htm
NOTE: PROCEDURE SGPANEL used (Total process time):
      real time           2.76 seconds
      cpu time            0.29 seconds

NOTE: There were 181 observations read from the data set SASUSER.LOGPR.

19   title;title2;

[ballardw · Accepted solution]

Where you expect a break do you have an X value and a missing Y variable value? If the X value is not there then you do not have a qualified break in the values.

data example;
   do x=1 to 10;
      y= rand('uniform');
      if x ne 3 then y2= rand('normal');
      else y2=.;
      output;
   end;
run;


proc sgplot data=example;
   /* no missing y for the x*/
   series x=x y=y / break;
   /* missing y2 for the x=3*/
   series x=x y=y2 /break;
run;

[das]

Yes, that is what happened. The orginal data does not include rows for the missing data. When I added these back (i.e., now there is an x-value that has a '.' for y), then the breaks show up in the graph. That didn't dawn on me. Thank you so much. Here is the result: