Re: [R] Quelplot

2011-09-22 Thread Den Alpin
Hi Hadley, have a look at: http://www.riani.it/pub/zrc-csda98.pdf and some Gauss code: http://www.riani.it/Gauss/procedures/BOXPLOTB.G Best regards, Daniele 2011/9/21 Hadley Wickham had...@rice.edu: Hi all, Does anyone have an R implementation of the queplot (K. M. Goldberg and B. 

Re: [R] How to speed up grouping time series, help please

2011-04-07 Thread Den Alpin
I found a faster implementation (by an order of magnitude from my tests) than the one using xts, split, merge (from Joshua). I report the two fastest solution below with code to generate a test case; some work still to be done for columns order and naming, Test case has grown from my previous post

[R] How to speed up grouping time series, help please

2011-04-07 Thread Den Alpin
I found a faster implementation (by an order of magnitude from my tests) than the one using xts, split, merge (from Joshua). I report the two fastest solution below with code to generate a test case; some work still to be done for columns order and naming, Test case has grown from my previous post

[R] How to speed up grouping time series, help please

2011-04-04 Thread Den Alpin
I retrieve for a few hundred times a group of time series (10-15 ts with 1 values each), on every group I do some calculation, graphs etc. I wonder if there is a faster method than what presented below to get an appropriate timeseries object. Making a query with RODBC for every group I get a

Re: [R] How to speed up grouping time series, help please

2011-04-04 Thread Den Alpin
, 2011 at 7:49 AM, Den Alpin den.al...@gmail.com wrote: I retrieve for a few hundred times a group of time series (10-15 ts with 1 values each), on every group I do some calculation, graphs etc. I wonder if there is a faster method than what presented below to get an appropriate timeseries