There are also some functions in the adehabitat package to
plot/manage/analyze trajectories. You can have a look at the following
paper:
http://www.science-direct.com/science?_ob=ArticleURL&_udi=B7W63-4V28T4D-1&_user=10&_coverDate=12%2F02%2F2008&_rdoc=3&_fmt=high&_orig=browse&_srch=doc-info(%23toc%2328539%239999%23999999999%2399999%23FLA%23display%23Articles)&_cdi=28539&_sort=d&_docanchor=&view=c&_ct=5&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=398a2266e820dc3f827e9e4d76d4bc80
Cheers,
Roger Bivand wrote:
On Fri, 30 Jan 2009, srinivasa raghavan wrote:
Hi r-sig-geo team,
I am a new user of R 2.8.1 in windows 2003. I have a data set of
football
ball pattern data. The data is for multiple matches. The variables are :
match: The code number of the match.
period: First half or second half denotted by 1 or 2.
pitchX: The x co-ordinate of the field.
pitchy: The y-co-ordinate of the field.
seconds: The time point.
I am interested to draw the football graph/diagram and then plot the
above
data.
What is a "football graph/diagram"? Is it a line joining the (x,y) in
time sequence? Simplifying by choosing one period in one match:
o <- order(seconds)
plot(pitchX[o], pitchY[o], type="l", asp=1)
should do that, but I don't know whether this is what you need? If you
need more detail on the trajectory, see the trip package (which is for
animal tracking data, not dissimilar in principle).
Roger
Can any one let me know the right functions/packages which can help
me in
this regard.
thanks in advance.
warm regards,
srinivas
statistical analyst.
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