[R] unable to use coplot function with zoo package

[Gabor Grothendieck]

You have no complete rows so how could it plot anything?
If you had some complete rows then this should work:
coplot(z1 ~ z2 | z3, as.data.frame(z4))

Lines1 <- "09:50:00,315.79
09:50:30,325.43
09:51:00,315.53
09:51:30,313.73
09:52:00,316.11
09:52:30,331.65
09:53:00,325.31
09:53:30,334.33
09:54:00,334.54
09:54:30,336.55
09:55:00,339.34
09:55:30,341.93"
Lines2 <-
"09:50:01,404.75
09:50:44,400.74
09:51:27,199.75
09:52:10,400.86
09:52:54,404.81
09:53:41,404.36
09:54:20,406.11
09:55:03,408.85"
Lines3 <-
"09:50:01,166.12
09:50:44,185.42
09:51:27,211.37
09:52:10,221.72
09:52:54,235.02
09:53:41,262.85
09:54:20,306.64
09:55:03,346.3"
library(zoo)
library(chron)
z1 <- read.zoo(textConnection(Lines1), sep = ",", FUN = times)
z2 <- read.zoo(textConnection(Lines2), sep = ",", FUN = times)
z3 <- read.zoo(textConnection(Lines3), sep = ",", FUN = times)
z4 <- merge(z1, z2, z3)

> z4
             z1     z2     z3
09:50:00 315.79     NA     NA
09:50:01     NA 404.75 166.12
09:50:30 325.43     NA     NA
09:50:44     NA 400.74 185.42
09:51:00 315.53     NA     NA
09:51:27     NA 199.75 211.37
09:51:30 313.73     NA     NA
09:52:00 316.11     NA     NA
09:52:10     NA 400.86 221.72
09:52:30 331.65     NA     NA
09:52:54     NA 404.81 235.02
09:53:00 325.31     NA     NA
09:53:30 334.33     NA     NA
09:53:41     NA 404.36 262.85
09:54:00 334.54     NA     NA
09:54:20     NA 406.11 306.64
09:54:30 336.55     NA     NA
09:55:00 339.34     NA     NA
09:55:03     NA 408.85 346.30
09:55:30 341.93     NA     NA
> packageDescription("zoo")$Version
[1] "1.6-1"
> R.version.string # Windows Vista
[1] "R version 2.10.0 Patched (2009-11-21 r50532)"




On Mon, Nov 23, 2009 at 5:25 AM, e-letter <inpost at gmail.com> wrote:
> Readers,
>
> I have tried to use the zoo package to merge datasets and then use the
> coplot function, but the graph is not fully created. Only the panel
> data is shown. Command terminal output below, with csv files. What is
> the meaning of the warning message? Can anyone help please?
>
> rhelpatconference.jabber.org
> r 251
> mandriva 2008
>
>> library(chron)
>> library(zoo)
>> z1<-read.zoo("test1.csv",header=FALSE,sep=",",FUN=times)
>> z2<-read.zoo("test2.csv",header=FALSE,sep=",",FUN=times)
>> z3<-read.zoo("test3.csv",header=FALSE,sep=",",FUN=times)
>> z4<-(na.approx(merge(z1,z2,z3),time(z1)))
>> coplot(z4$z2~z4$z1|z4$z3)
> Warning messages:
> 1: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
> 2: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
> 3: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
> 4: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
> 5: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
> 6: Index vectors are of different classes: integer times in:
> merge.zoo(e1, e2, all = FALSE, retclass = NULL)
>> z4$z1
> 09:50:01 09:50:30 09:50:44 09:51:00 09:51:27 09:51:30 09:52:00 09:52:10
>  320.61   325.43   320.48   315.53   314.63   313.73   316.11   323.88
> 09:52:30 09:52:54
>  331.65   328.48
>> z4$z2
> 09:50:01 09:50:30 09:50:44 09:51:00 09:51:27 09:51:30 09:52:00 09:52:10
> 404.7500 402.7450 400.7400 300.2450 199.7500 266.7867 333.8233 400.8600
> 09:52:30 09:52:54
> 402.8350 404.8100
>> z4$z3
> 09:50:01 09:50:30 09:50:44 09:51:00 09:51:27 09:51:30 09:52:00 09:52:10
>  166.120  175.770  185.420  198.395  211.370  214.820  218.270  221.720
> 09:52:30 09:52:54
>  228.370  235.020
>>
> test1.csv:
> 09:50:00,315.79
> 09:50:30,325.43
> 09:51:00,315.53
> 09:51:30,313.73
> 09:52:00,316.11
> 09:52:30,331.65
> 09:53:00,325.31
> 09:53:30,334.33
> 09:54:00,334.54
> 09:54:30,336.55
> 09:55:00,339.34
> 09:55:30,341.93
> test2.csv:
> 09:50:01,404.75
> 09:50:44,400.74
> 09:51:27,199.75
> 09:52:10,400.86
> 09:52:54,404.81
> 09:53:41,404.36
> 09:54:20,406.11
> 09:55:03,408.85
> test3.csv:
> 09:50:01,166.12
> 09:50:44,185.42
> 09:51:27,211.37
> 09:52:10,221.72
> 09:52:54,235.02
> 09:53:41,262.85
> 09:54:20,306.64
> 09:55:03,346.3
>
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