求如何用SAS 在图上加一条对角线，作为对照线

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1. /*Program 6.1 Laboratory Data Scatter Plot Using PROC SGPLOT*/
   
2. **** INPUT SAMPLE HEMATOCRIT LAB DATA AS ADLB.;
   
3. data ADLB;
   
4. label USUBJID = "Unique Subject Identifier"
   
5. PARAMCD = "Parameter Code"
   
6. BASE = "Baseline Value"
   
7. AVAL = "Analysis Value"
   
8. TRTP = "Planned Treatment";
   
9. input USUBJID $ PARAMCD $ AVAL BASE TRTP $ @@;
   
10. datalines;
    
11. 101 HCT 35.0 31.0 a 102 HCT 40.2 30.0 a
    
12. 103 HCT 42.0 42.4 b 104 HCT 41.2 41.4 b
    
13. 105 HCT 35.0 33.3 a 106 HCT 34.3 34.3 a
    
14. 107 HCT 30.3 44.0 b 108 HCT 34.2 42.0 b
    
15. 109 HCT 40.0 41.1 b 110 HCT 41.0 42.1 b
    
16. 111 HCT 33.3 33.8 a 112 HCT 34.0 31.0 a
    
17. 113 HCT 34.0 41.0 b 114 HCT 34.0 40.0 b
    
18. 115 HCT 37.2 35.2 a 116 HCT 39.3 36.2 a
    
19. 117 HCT 36.3 38.3 b 118 HCT 37.4 37.3 b
    
20. 119 HCT 44.2 34.3 a 120 HCT 42.2 36.5 a
    
21. ;
    
22. run;
    
23. 
    
24. **** CLOSE ODS DESTINATIONS SO ONLY ONE GRAPH IS PRODUCED;
    
25. ods _all_ close;
    
26. **** MODIFY THE STYLE TEMPLATE TO GET DESIRED SYMBOLS;
    
27. ods path sashelp.tmplmst(read) work.templat;
    
28. proc template;
    
29. define style newblue / store=work.templat;
    
30. parent=styles.htmlblue;
    
31. class graph / attrpriority='none';
    
32. class GraphData1 / markersymbol='circle'
    
33. contrastcolor=black;
    
34. class GraphData2 / markersymbol='plus'
    
35. contrastcolor=black;
    
36. end;
    
37. run;
    
38. 
    
39. **** CREATE THE PLOT DESIRED WITH PROC SGPLOT;
    
40. ods html path="D:\W\Code_lib\graph" file="figure6.1.html"
    
41. image_dpi=300 style=newblue;
    
42. ods graphics on / reset imagename="figure6_1" outputfmt=png;
    
43. **** CREATE SCATTER PLOT;
    
44. proc sgplot data=adlb;
    
45.         scatter x = aval y = base / group=trtp;
    
46.         xaxis values = (30 35 40 45) minorcount=4;
    
47.         yaxis values = (30 35 40 45) minorcount=4;
    
48.         lineparm x=30 y=30 slope=1;
    
49.         title1 "Hematocrit (%) Scatter Plot";
    
50.         title2 "At Visit 3";
    
51. run;
    
52. ods graphics off;
    
53. ods html close;

复制代码

from SAS Programming in the Pharmaceutical Industry, Second Edition;
use ”lineparm x=a y=a slope=1;“  in proc sgplot