我想按升序对数据框中的列进行排序/排序。但是，问题是数字前面是一个字符串。
structure(list(H = c("P01050.1", "P01080.1",
"P01090.1"), Gr_1 = c(0, 1107200, 17096000), Gr_10 = c(0,
37259000, 1104800000), Gr_11 = c(1835800, 53909000,
623960000), Gr_12 = c(0, 19117000, 808600000), Gr_13 = c(2544200,
2461400, 418770000), Gr_14 = c(5120400, 1373700, 117330000
), Gr_15 = c(6623500, 0, 73336000), Gr_16 = c(0,
0, 31761000), Gr_17 = c(13475000, 0, 29387000), Gr_18 = c(7883300,
0, 27476000), Gr_19 = c(82339000, 3254700, 50825000
), Gr_2 = c(1584100, 84847000, 5219500000), Gr_20 = c(205860000,
0, 67685000), Gr_21 = c(867120000, 1984400, 2.26e+08
), Gr_22 = c(1144300000, 11342000, 256440000), Gr_23 = c(1.179e+09,
4391600, 141230000), Gr_24 = c(1408700000, 2830100,
328190000), Gr_25 = c(757020000, 5588500, 113360000
), Gr_26 = c(456930000, 4694700, 78221000), Gr_27 = c(162310000,
12425000, 29132000), Gr_28 = c(71199000, 13883000,
39425000), Gr_29 = c(220140000, 48225000, 22240000),
Gr_3 = c(4206000, 291080000, 1.5496e+10), Gr_30 = c(418310000,
248370000, 2998900), Gr_31 = c(214340000, 342310000,
6181100), Gr_32 = c(203520000, 545960000, 17214000
), Gr_33 = c(353320000, 1048300000, 31244000),
Gr_34 = c(163870000, 1026300000, 23291000), Gr_35 = c(134430000,
773530000, 19527000), Gr_36 = c(159630000, 547270000,
12743000), Gr_37 = c(214110000, 311250000, 7546600
), Gr_38 = c(199410000, 118250000, 4917500), Gr_39 = c(73076000,
41591000, 2751100), Gr_4 = c(0, 348100000, 3.0977e+10
), Gr_40 = c(57703000, 28495000, 2336400), Gr_41 = c(91657000,
11727000, 7568200), Gr_5 = c(0, 176770000, 8752700000
), Gr_6 = c(0, 174870000, 6783500000), Gr_7 = c(0,
138470000, 2386900000), Gr_8 = c(0, 84046000, 1371600000
), Gr_9 = c(0, 82060000, 567990000)), .Names = c("H",
"Gr_1", "Gr_10", "Gr_11", "Gr_12",
"Gr_13", "Gr_14", "Gr_15", "Gr_16",
"Gr_17", "Gr_18", "Gr_19", "Gr_2",
"Gr_20", "Gr_21", "Gr_22", "Gr_23",
"Gr_24", "Gr_25", "Gr_26", "Gr_27",
"Gr_28", "Gr_29", "Gr_3", "Gr_30",
"Gr_31", "Gr_32", "Gr_33", "Gr_34",
"Gr_35", "Gr_36", "Gr_37", "Gr_38",
"Gr_39", "Gr_4", "Gr_40", "Gr_41",
"Gr_5", "Gr_6", "Gr_7", "Gr_8",
"Gr_9"), row.names = c(NA, 3L), class = "data.frame")
我正在尝试应用函数sort和order，但它们都不会更改顺序。任何想法如何正确分类？我想从Gr_1开始：Gr_10然后Gr_11：＆＃34; Gr_20＆＃34;等
答案 0 :(得分：3)
另一个版本可能更容易阅读：
n <- sub("Gr_", "", names(df)) # replace Gr_ with nothing
n[1] <- 0 # keep "H" column as first
n <- as.numeric(n) # convert to numeric (H becomes zero)
df[,order(n)] # use that to sort columns
（但我喜欢akrun建议使用gtools::mixedsort / -order）
答案 1 :(得分：1)
UITextAttributes att = new UITextAttributes();
att.Font = UIFont.SystemFontOfSize(20.0 , FontAttributes.Bold); // size and weight
UIBarButtonItem.AppearanceWhenContainedIn(new Type[] { typeof( UINavigationBar) }).SetTitleTextAttributes(att, UIControlState.Normal);
UIBarButtonItem.AppearanceWhenContainedIn(new Type[] { typeof(UINavigationBar) }).SetTitleTextAttributes(att, UIControlState.Highlighted);
把H放在第一位：
d[,order(as.numeric(sub("\\D*","",colnames(d))))]
Gr_1 Gr_2 Gr_3 Gr_4 Gr_5 Gr_6 Gr_7 Gr_8
1 0 1584100 4.2060e+06 0.0000e+00 0 0 0 0
2 1107200 84847000 2.9108e+08 3.4810e+08 176770000 174870000 138470000 84046000
3 17096000 5219500000 1.5496e+10 3.0977e+10 8752700000 6783500000 2386900000 1371600000
Gr_9 Gr_10 Gr_11 Gr_12 Gr_13 Gr_14 Gr_15 Gr_16 Gr_17
1 0 0 1835800 0 2544200 5120400 6623500 0 13475000
2 82060000 37259000 53909000 19117000 2461400 1373700 0 0 0
3 567990000 1104800000 623960000 808600000 418770000 117330000 73336000 31761000 29387000
Gr_18 Gr_19 Gr_20 Gr_21 Gr_22 Gr_23 Gr_24 Gr_25
1 7883300 82339000 205860000 867120000 1144300000 1179000000 1408700000 757020000
2 0 3254700 0 1984400 11342000 4391600 2830100 5588500
3 27476000 50825000 67685000 226000000 256440000 141230000 328190000 113360000
Gr_26 Gr_27 Gr_28 Gr_29 Gr_30 Gr_31 Gr_32 Gr_33
1 456930000 162310000 71199000 220140000 418310000 214340000 203520000 353320000
2 4694700 12425000 13883000 48225000 248370000 342310000 545960000 1048300000
3 78221000 29132000 39425000 22240000 2998900 6181100 17214000 31244000
Gr_34 Gr_35 Gr_36 Gr_37 Gr_38 Gr_39 Gr_40 Gr_41 H
1 163870000 134430000 159630000 214110000 199410000 73076000 57703000 91657000 P01050.1
2 1026300000 773530000 547270000 311250000 118250000 41591000 28495000 11727000 P01080.1
3 23291000 19527000 12743000 7546600 4917500 2751100 2336400 7568200 P01090.1