topic Re: Mixing referentials in SGANNO in Graphics Programming

Mixing referentials in SGANNO

ChrisNZ — Thu, 15 Aug 2024 06:16:47 GMT

Hi,

Running this code

data T;
  retain X1SPACE X2SPACE 'datavalue' Y1SPACE Y2SPACE 'datapercent' FUNCTION 'line';
  X1=13; X2=15; Y1=25; Y2=50; output;
  X1=11; X2=13; Y1SPACE ='datavalue'; Y2SPACE ='datavalue'; YC1='Alice'; YC2='Alice'; output;
run;  
proc sgplot data=SASHELP.CLASS sganno=T; 
  scatter x=AGE y=NAME;
run;

results in only one line being drawn, and message:

WARNING: DrawLine statement has missing/invalid value for position (X or Y). Draw statement discarded.

Removing any one of the 2 output lines in the data step results in the remaining line being drawn without issue.

How can I mix referentials (or drawspaces) using SGANNO and draw these 2 lines?

Re: Mixing referentials in SGANNO

ChrisNZ — Thu, 15 Aug 2024 06:21:48 GMT

I answered my own question.

I need to set Y1 and Y2 to missing before Y1C and Y2C are used.

Why oh why?

When space is datavalue and the variable is character, why does SAS try to read Y1 and Y2 instead of Y1C and Y2C? And then throw a fit is that value is not missing?

Re: Mixing referentials in SGANNO

Rick_SAS — Thu, 15 Aug 2024 09:27:55 GMT

In situations that involve switching drawing spaces, you might want to consider using the %SGANNO macros: SAS Help Center: SG Annotation Function Dictionary

The macros include a RESET="ALL" option, which clears values left over from other calls. For example, your program can be rewritten by using the %SGLINE macro, as follows:

%SGANNO
data T2;
%sgline(x1space='datavalue',
        x2space='datavalue',
        y1space='datapercent',
        y2space='datapercent',
        X1=13, X2=15, Y1=25, Y2=50); 
%sgline(drawspace='datavalue',
        X1=11, X2=13, YC1='Alice', YC2='Alice',
        reset="all"); 
run;

proc sgplot data=SASHELP.CLASS sganno=T2; 
  scatter x=AGE y=NAME;
run;

Re: Mixing referentials in SGANNO

ChrisNZ — Sun, 18 Aug 2024 08:49:45 GMT

The %sganno macros present no interest to me. Among the reasons:

1. It's not easier to write

%sgtext( X1=50, Y1=50, LABEL='Player on court');

than

X1=50; Y1=50; LABEL='Player on court'; output;

2. You need to rewrite everything each time, you can't set a variable to use for several annotations like

X1=50;
%sgtext( Y1=50, LABEL='Player on court'); * DOES NOT WORK;
%sgtext( Y1=75, LABEL='Missed shots');

3. The macros break working code. If you try to mix %sganno and regular output, you quickly run into trouble.

data ANNO;
  FUNCTION='text'; X1=50; Y1=50; LABEL='On-court'; output;
  FUNCTION='line'; X1=25; X2=75; Y1=80;  Y2=Y1; output;
run;

works but

data ANNO;
 %sgtext( X1=50, Y1=50, LABEL='On-court');
 FUNCTION='line'; X1=25; X2=75; Y1=80;  Y2=Y1; output;
run;

generates

WARNING: The LINE function is missing required column. The function will be ignored.

which is NOT a helpful message.

The coded columns are exactly the same.

All in all, not worth the trouble. The plethora of variable names compared to %anno are painful enough, no need to add more pain.

Re: Mixing referentials in SGANNO

ChrisNZ — Sun, 18 Aug 2024 08:50:36 GMT

Solution: I answered my own question and contacted tech support for them to create a defect entry, or at least generate a usage note describing this absurd behaviour.

Re: Mixing referentials in SGANNO

ChrisNZ — Tue, 20 Aug 2024 04:40:57 GMT

Fyi a defect has been raised. Hopefully his gets fixed.

I've reported this problem to development for fixing in a future release. Until that time, you'll need to use your circumvention of setting the Y1/Y2 values to missing.