R help - Jan 2009 - Time series | average

Hi,

I hope that someone can help me write the right commands.
I have a data set with 3 columns

player_name|number_goals|year|day

not every player is listed for every year-day-hour

I would like to compute the "growth rate" of each player A so if
player
scored on day X 3 goals and on day X+1 6 goals then her grow rate is 100% ..
If she did not score on day X then maybe we set a default scoring value of 1
on day X .. I am looking for ways to deal with that.

Finally I have another data set with 2 columns
player_name|growth_rate|year|day , I would like to compute the average
growth rate from day X to X-1, from day X to X-2, from day X to X-3 .. etc

Does anyone know a package that will enable me to complete these tasks
easily?

Thank you for your time.

	[[alternative HTML version deleted]]

Hi

I assume that maybe package zoo and na.locf could help you.

Petr

r-help-bounces at r-project.org napsal dne 02.01.2009 09:44:00:
> Hi,
> 
> I hope that someone can help me write the right commands.
> I have a data set with 3 columns
> 
> player_name|number_goals|year|day
> 
> not every player is listed for every year-day-hour
> 
> I would like to compute the "growth rate" of each player A so if
player
> scored on day X 3 goals and on day X+1 6 goals then her grow rate is 
100% ..
> If she did not score on day X then maybe we set a default scoring value 
of 1
> on day X .. I am looking for ways to deal with that.
> 
> Finally I have another data set with 2 columns
> player_name|growth_rate|year|day , I would like to compute the average
> growth rate from day X to X-1, from day X to X-2, from day X to X-3 .. 
etc
> 
> Does anyone know a package that will enable me to complete these tasks
> easily?
> 
> Thank you for your time.
> 
>    [[alternative HTML version deleted]]
> 
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