Hum. data.frame was left off. Trying again...
On Jan 1, 2010, at 10:20 AM, donahc...@me.com wrote:
Okay, I don't know if I'm blocking because of my other programming
language experience of if I'm just being dense.
I have a data.frame with high,open,low,last,day, and start_time time
c
Okay, I don't know if I'm blocking because of my other programming
language experience of if I'm just being dense.
I have a data.frame with high,open,low,last,day, and start_time time
columns. What I want to do is get all the rows with the same day and
process each of those columns. If I
On Dec 31, 2009, at 5:46 PM, William Dunlap wrote:
mytable$duration <- mytable$end_time - mytable$start_time
mytable
start_timeend_timeduration
1 2009-12-31 15:27:00 2009-12-31 15:27:00 0 secs
2 2009-12-31 16:27:00 2010-01-01 15:27:00 82800 secs
...
11 2010
In this specific case I'm going to do another select, from a different
table with the where clause being based on the start_time and end_time.
select * from table_name where time >= start_time and time <= end_time;
On Dec 31, 2009, at 3:57 PM, John Kane wrote:
Uh what do you want to do to i
Hi,
I have a data frame that was create by issuing a select against my
sqlite database. I want to get each row from the data frame and use
the each of the column values. The data frame looks like this:
start_timeend_time
09:30:00 10:00:00
10:00:01 10:30:00
etc
Can a point m
On Dec 30, 2009, at 10:10 PM, Jim Lemon wrote:
On 12/31/2009 02:41 PM, donahc...@me.com wrote:
Hi,
I'm pretty much an R noob and I'm missing some paradigm in R I
think. I can't figure our how to compare numerics. here's a
transcript of my tests. Any pointers?
Hi,
I'm pretty much an R noob and I'm missing some paradigm in R I think.
I can't figure our how to compare numerics. here's a transcript of my
tests. Any pointers?
> print(range_sd)
[1] 34.40783
> is.numeric(range_sd)
[1] TRUE
> is.numeric(foo)
[1] TRUE
> is.double(range_sd)
[1] TRUE
>
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