________________________________
From: akshay kulkarni <akshay_e4 at hotmail.com>
Sent: Tuesday, October 16, 2018 2:21 PM
To: R help Mailing list
Subject: Fw: inconsistency in pbmclapply...
dear members,
however, "ts must have more than one observation"
error is only found for the first entry of LYG1 ( LYG1[[20]], LYG1[[200]],
[[elided Hotmail spam]]
________________________________________
From: R-help <r-help-bounces at r-project.org> on behalf of akshay kulkarni <
akshay_e4 at hotmail.com>
Sent: Tuesday, October 16, 2018 1:57 PM
To: R help Mailing list
Subject: [R] inconsistency in pbmclapply...
dear members,
I am using parallel processing with
pbmclapply. below is the code. LYG1[[1]] got from pbmclapply is not the
same as LYG1[[1]] got from direct application of auto.arima. what may be
wrong?
debug at <tmp>#20: LYG1 <- pbmclapply(LYGH, FUN =
auto.arima, mc.cores = detectCores())
Browse[2]>
|========================================= | 68%, ETA
00:21
debug at <tmp>#21: LYG2 <- pbmclapply(LYGH, FUN = ets, mc.cores =
detectCores())
Browse[2]> LYG1[[1]]
[1] "Error in ts(x) : 'ts' object must have one or more observations\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
<simpleError in ts(x): 'ts' object must have one or more observations>
Warning message:
In pbmclapply(LYGH, FUN = auto.arima, mc.cores = detectCores()) :
scheduled cores encountered errors in user code
Browse[2]> LYGH[[1]]
[1] 0.700000000 0.400000000 0.300000000 0.150000000 0.250000000
0.950000000
[7] 1.000000000 0.300000000 0.650000000 0.200000000 0.600000000
0.100000000
[13] 0.001412873 1.550000000 0.150000000 0.300000000 0.450000000
0.350000000
[19] 0.150000000 2.350000000 0.250000000 0.100000000 3.700000000
3.950000000
[25] 3.050000000 0.900000000 0.400000000 1.050000000 1.100000000
1.950000000
[31] 2.000000000 0.650000000 0.700000000 0.250000000 5.250000000
0.800000000
[37] 0.001412873
Browse[2]> auto.arima(LYGH[[1]])
Series: LYGH[[1]]
ARIMA(0,1,0)
sigma^2 estimated as 2.303: log likelihood=-66.1
AIC=134.2 AICc=134.31 BIC=135.78
very many thanks for your time and effort.....
yours sincerely,
AKSHAY M KULKARNI
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______________________________________________
R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.