topic How to add one label or note to a specific point? in Graphics Programming

How to add one label or note to a specific point?

TomiKong — Fri, 02 Mar 2012 11:12:16 GMT

If I generate the codes below, how to mark the point (5, 25) on the figure with a label "this is one point"? Thanks

data mydata;

do i=-10 to 10;

x=i;

y=i**2;

output;

end;

drop i;

run;

goptions reset=global;

symbol v=dot i=spline c=blue;

axis1 order=-10 to 10 by 5;

axis2 order=0 to 150 by 50;

proc gplot data=mydata;

plot y*x/haxis=axis1 vaxis=axis2;

run; quit;

How to add one label or note to a specific point?

GraphGuy — Fri, 02 Mar 2012 13:11:36 GMT

If you're using a fairly recent version of SAS, and you're using a traditional SAS/Graph device (not java or activex), the easiest way to do this is with the "pointlabel" feature of the symbol statement...

data mydata;
do i=-10 to 10;
x=i;
y=i**2;
output;
end;
drop i;
run;

data mydata; set mydata;
if x=5 and y=25 then mytext="this is one point";
run;

goptions reset=global;
symbol v=dot i=spline c=blue pointlabel=("#mytext");
axis1 order=-10 to 10 by 5;
axis2 order=0 to 150 by 50;

proc gplot data=mydata;
plot y*x/haxis=axis1 vaxis=axis2;
run; quit;

How to add one label or note to a specific point?

TomiKong — Fri, 02 Mar 2012 14:44:20 GMT

Thanks.But how to add labels to two specific points? (5,25) is labeled with "this is the lst point" and (8,64) is labeled with "this is the 2nd point".

How to add one label or note to a specific point?

GraphGuy — Fri, 02 Mar 2012 14:47:17 GMT

It's all data-driven...

data mydata;
do i=-10 to 10;
x=i;
y=i**2;
output;
end;
drop i;
run;

data mydata; set mydata;
if x=5 and y=25 then mytext="this is the 1st point";
if x=8 and y=64 then mytext="this is the 2nd point";
run;

goptions reset=global;
symbol v=dot i=spline c=blue pointlabel=("#mytext");
axis1 order=-10 to 10 by 5;
axis2 order=0 to 150 by 50;

proc gplot data=mydata;
plot y*x/haxis=axis1 vaxis=axis2;
run; quit;