Re: [R] Determining maximum hourly slope per day

2013-03-14 Thread Nathan Miller
Thanks for your example Peter. It does seem like one means of getting the job done and if I'm unable to figure out a means with zoo::rollapply I may follow your example. Hopefully someone else can chime in. Thanks, Nate --- Nathan A. Miller Romberg

Re: [R] Determining maximum hourly slope per day

2013-03-13 Thread Peter Ehlers
On 2013-03-12 17:10, Nathan Miller wrote: Hello, I have a challenge! I have a large dataset with three columns, date,temp, location. date is in the format %m/%d/%y %H:%M, with a temp recorded every 10 minutes. These temperatures of surface temperatures and so fluctuate during the day, heating

[R] Determining maximum hourly slope per day

2013-03-12 Thread Nathan Miller
Hello, I have a challenge! I have a large dataset with three columns, date,temp, location. date is in the format %m/%d/%y %H:%M, with a temp recorded every 10 minutes. These temperatures of surface temperatures and so fluctuate during the day, heating up and then cooling down, so the data is a