Dear R helpers,
I have a data.frame as given below -
dat1 = data.frame(date =
as.Date(c("3/30/12","3/29/12","3/28/12","3/27/12","3/26/12",
"3/23/12","3/22/12","3/21/12","3/20/12",
"3/30/12","3/29/12","3/28/12","3/27/12",
"3/26/12","3/23/12","3/22/12","3/21/12","3/20/12",
"3/30/12","3/29/12","3/28/12",
"3/27/12","3/26/12","3/23/12","3/22/12","3/21/12","3/20/12"),
format="%m/%d/%y"),
name = as.character(c("xyz","xyz","xyz","xyz","xyz","xyz","xyz","xyz",
"xyz","abc", "abc","abc","abc","abc","abc", "abc","abc","abc","lmn","lmn",
"lmn","lmn", "lmn","lmn", "lmn","lmn","lmn")),
rate = c(c(0.065550707, 0.001825007, 0.054441969, 0.020810572, 0.073430586,
0.037299722, 0.099807733, 0.042072817, 0.099487289, 5.550737022, 4.877620777,
5.462477493, 4.972518082, 5.01495407, 5.820459609, 5.403881954, 5.009506516,
4.807763909, 10.11885434,10.1856975,10.04976806,10.15428632, 10.20399335,
10.22966704,10.20967742,10.22927793,10.02439192)))
> dat1
date name rate
1 2012-03-30 xyz 0.065550707
2 2012-03-29 xyz 0.001825007
3 2012-03-28 xyz 0.054441969
4 2012-03-27 xyz 0.020810572
5 2012-03-26 xyz 0.073430586
6 2012-03-23 xyz 0.037299722
7 2012-03-22 xyz 0.099807733
8 2012-03-21 xyz 0.042072817
9 2012-03-20 xyz 0.099487289
10 2012-03-30 abc 5.550737022
11 2012-03-29 abc 4.877620777
12 2012-03-28 abc 5.462477493
13 2012-03-27 abc 4.972518082
14 2012-03-26 abc 5.014954070
15 2012-03-23 abc 5.820459609
16 2012-03-22 abc 5.403881954
17 2012-03-21 abc 5.009506516
18 2012-03-20 abc 4.807763909
19 2012-03-30 lmn 10.118854340
20 2012-03-29 lmn 10.185697500
21 2012-03-28 lmn 10.049768060
22 2012-03-27 lmn 10.154286320
23 2012-03-26 lmn 10.203993350
24 2012-03-23 lmn 10.229667040
25 2012-03-22 lmn 10.209677420
26 2012-03-21 lmn 10.229277930
27 2012-03-20 lmn 10.024391920
attach(dat1)
library(plyr)
library(reshape)
in.melt <- melt(dat1, measure = 'rate')
(df = cast(in.melt, date ~ name))
df_sorted = df[order(as.Date(df$date, "%m/%d/%Y"), decreasing = TRUE),]
> df_sorted
date abc lmn xyz
9 2012-03-30 5.550737 10.11885 0.065550707
8 2012-03-29 4.877621 10.18570 0.001825007
7 2012-03-28 5.462477 10.04977 0.054441969
6 2012-03-27 4.972518 10.15429 0.020810572
5 2012-03-26 5.014954 10.20399 0.073430586
4 2012-03-23 5.820460 10.22967 0.037299722
3 2012-03-22 5.403882 10.20968 0.099807733
2 2012-03-21 5.009507 10.22928 0.042072817
1 2012-03-20 4.807764 10.02439 0.099487289
My Problem :-
The original data.frame has the order name as "xyz", "abc" and "lmn". However,
after melt and cast command, the order in the "df_sorted" has changed to "abc",
"lmn" and " xyz". How do I maintain the original order in "df_sorted" i.e. I
need
date xyz abc lmn
9 2012-03-30 0.065550707 5.550737 10.11885
8 2012-03-29 0.001825007 4.877621 10.18570
7 2012-03-28 0.054441969 5.462477 10.04977
6 2012-03-27 0.020810572 4.972518 10.15429
5 2012-03-26 0.073430586 5.014954 10.20399
4 2012-03-23 0.037299722 5.820460 10.22967
3 2012-03-22 0.099807733 5.403882 10.20968
2 2012-03-21 0.042072817 5.009507 10.22928
1 2012-03-20 0.099487289 4.807764 10.02439
Kindly guide
Thanking in advance
Vincy
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