Hello everyone,
I have been using bReeze package for weibull distribution analysis.
In this package, there is a function called 'formatTS' for converting time
stamps from string to POSIXlt.
(http://rgm3.lab.nig.ac.jp/RGM/R_rdfile?f=bReeze/man/formatTS.Rd&d=R_CC)
This is a part of process to plot and calculate shape and scale of the
distribution.
However, this function keeps showing an error message.
ts1 <- formatTS(time.stamp = winddata_ballarat[,1])
1 1383549939
2 1383549939
3 1383549939
4 1383549953
Error in formatTS(time.stamp = winddata_ballarat[, 1]) : No pattern found
The format of the time series (200000 rows) I have is dd.mm.yyyy hh:mm for
12 years.. such as..
Time Wind speed Wind direction
25.07.2000 0:00:00 15 20
25.07.2000 0:30:00 11 20
25.07.2000 1:00:00 18 10
25.07.2000 1:30:00 17 10
25.07.2000 2:00:00 22 360
25.07.2000 2:30:00 22 360
25.07.2000 3:00:00 26 360
25.07.2000 3:30:00 28 360
. . .
. . .
. . .
. . .
. . .
I have no idea why the function cannot find a pattern..
Surprisingly, when the same data and the same function was used in my
colleague's computer, it worked. So I tried processing in other computers
but failed.
I tried using strftime function too but result is not reliable, which
indicates there is a mismatch between the time stamp I created and wind
speed.
Could anyone know why it keeps happening and how to solve this problem?
All R codes are described below:
winddata_ballarat <- read.csv("ballarat1.csv",header=TRUE,sep=",")
set2 <- createSet(height=10, v.avg=winddata_ballarat$Wind.speed,
dir.avg=winddata_ballarat$Wind.direction)
ts1 <- formatTS(time.stamp = winddata_ballarat[,1])
kangmin.ballarat <- createMast(time.stamp=ts, set2)
kangmin.ballarat.wb <- weibull(mast=kangmin.ballarat, v.set=1, print=FALSE)
plotWeibull(wb=kangmin.ballarat.wb, show.ak =TRUE)
weibull(mast=kangmin.ballarat, v.set=1)
Thank you.
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