Procedure features: |
NOFRAME |
SPEED= |
SUMVAR= |
WINDROSE |
|
Sample library member: |
GRRWNDRS
|
![[untitled graphic]](images/grrwndrs.gif)
The
windrose chart is named for charts of wind speed and direction.
Windrose charts are a type of histogram which are useful when the extreme
values of the histogram's midpoint variable are related. Typical applications
include histograms involving direction, clock time, or other cyclical values.
goptions reset=all border;
data wind;
input Direction $ Speed $ Percent @@;
datalines;
N 1-9 1.7 N 10-19 1.0 NE 1-9 1.4
NE 10-19 .8 E 1-9 2.4 E 10-19 1.4
SE 1-9 1.2 SE 10-19 .4 S 1-9 2.7
S 10-19 1.6 SW 1-9 3.7 SW 10-19 3.2
W 1-9 3.1 W 10-19 3.4 NW 1-9 2.1
NW 10-19 1.7
run;
proc gradar data=wind;
chart direction / sumvar=percent
windrose
speed=speed
noframe;
run;
quit;
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