Hi,
I'm trying to create a heat map of a strike zone in baseball. The data contains the x and y values for where the ball crossed the plate, and also whether it was hit or not. I'd like to create a heat map showing the best areas of contact, along with overlaying the strike zone.
Ideally, the strike zone would just be a box from coordinates (-1,1), (1,1), (-1,3), (1,3).
Here's the code for the heatmap, which doesn't include whether or not contact was made:
proc sgplot data=coded_hits_num;
heatmap x=plate_x y=plate_z / colormodel=(blue yellow red);
run;
Thank you for the help.
I think I would merge the data with the coordinates of the corners of the strike zone and use a POLYGON statement to draw the rectangle, as follows:
data coded_hits_num;
do x = -1 to 1 by 0.1;
do z = 1 to 3 by 0.1;
p = 1 - (x**2 + (z-2)**2) / 4;
hits = rand("Binomial", p, 100);
output;
end;
end;
run;
data strikeZone;
ID = "S";
input xPoly zPoly;
datalines;
-1 1
1 1
1 3
-1 3
;
data all;
merge coded_hits_num strikezone;
run;
proc sgplot data=all aspect=1 noautolegend;
heatmap x=x y=z / freq=hits colormodel=(blue yellow red) nxbins=21 nybins=21;
polygon ID=ID x=xPoly y=zPoly / lineattrs=(thickness=5);
xaxis min=-2 max=2;
yaxis min=0 max=4;
run;
I think I would merge the data with the coordinates of the corners of the strike zone and use a POLYGON statement to draw the rectangle, as follows:
data coded_hits_num;
do x = -1 to 1 by 0.1;
do z = 1 to 3 by 0.1;
p = 1 - (x**2 + (z-2)**2) / 4;
hits = rand("Binomial", p, 100);
output;
end;
end;
run;
data strikeZone;
ID = "S";
input xPoly zPoly;
datalines;
-1 1
1 1
1 3
-1 3
;
data all;
merge coded_hits_num strikezone;
run;
proc sgplot data=all aspect=1 noautolegend;
heatmap x=x y=z / freq=hits colormodel=(blue yellow red) nxbins=21 nybins=21;
polygon ID=ID x=xPoly y=zPoly / lineattrs=(thickness=5);
xaxis min=-2 max=2;
yaxis min=0 max=4;
run;
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