Re: [R] aggregate in zoo

On 6/1/07, Alfonso Sammassimo [EMAIL PROTECTED] wrote: Hi R-experts, Thanks very much to Jim Holtman and Gabor on my previous question. I am having another problem with data manipulation in zoo. The following is data (Z) for first business day of every month in zoo format. I am trying to

[R] aggregate in zoo

Hi R-experts, Thanks very much to Jim Holtman and Gabor on my previous question. I am having another problem with data manipulation in zoo. The following is data (Z) for first business day of every month in zoo format. I am trying to get mean of open for each year. I subset Z - Z[,2] then