我有一个名为mystring. 我想通过从后向匹配第一个分隔符“_”来删除字符并获取result.
mystring<- c("apple_tar", "banana_bag_cool", "mango_mellow_yellow_sweet")
结果
"apple" "banana_bag" "mango_mellow_yellow"
我有这个矢量叫myvec.我想_用" -" 替换每个元素中的前两个点(如果存在之前).如何在R中执行此操作并获得结果？
myvec <- c("SKDP.209.3_C4UAMACXX.7.04.ReCal.sort.bam", "SKDP.97.1_C4UAMACXX.7.12.ReCal.sort.bam",
"SKDP972_C4UAMACXX.7.13.ReCal.sort.bam")
结果
SKDP-209-3_C4UAMACXX.7.04.ReCal.sort.bam, SKDP-97-1_C4UAMACXX.7.12.ReCal.sort.bam,
SKDP972_C4UAMACXX.7.13.ReCal.sort.bam
我有一个如下所示的数据帧(原始数据非常大).我想根据目标矢量组对它们进行排序并获得结果.
数据帧
sample group
A AA
B CC
C CC
D BB
E AA
F AA
target.vector <- c("AA", "BB", "CC")
结果
sample group
A AA
E AA
F AA
D BB
B CC
C CC
我想cbindmydf [,"c"]并newcolumn在一步中给它一个新名称并得到结果矩阵mydf.我该怎么做？
mydf
# a b c
# 1 2 6
# 1 3 4
mydf
# a b c newcolumn
# 1 2 6 6
# 1 3 4 4
我有一个矢量vec.我需要在最后一个"/"之前删除该部分并获取剩余的字符串并获取result.另请注意,我不能使用Perl兼容的regexp(即perl = FALSE).我也希望看到第n个分隔符.
vec<-c("/apple/pineapple/mango/reg.sh_ttgs.pos","/apple/pipple/mgo/deh_ttgs.pos")
最后一个分隔符的结果
reg.sh_ttgs.pos , deh_ttgs.pos
第二个分隔符的结果
pineapple/mango/reg.sh_ttgs.pos, pipple/mgo/deh_ttgs.pos
等等..
我正在学习perl,我正在尝试一些愚蠢的东西
@months=('Jan'..'Dec');
print "The dates are: @months\n";
我输出了很多三个字母的单词.有人可以解释perl在这里做什么吗？
如何粘贴项目列表并获得如下所示的结果？
mylist<- list(c("PDLIM5", "CBG"), c("PDLIM5", "GTA"), "DDX60")
结果
PDLIM5:CBG PDLIM5:GTA DDX60
我有一个名为myfile.tsv的tsv文件.我想基于chr列中的唯一元素使用awk/gawk/bash或任何更快的命令行拆分此文件并获取chr1.tsv(header + row1),chr2.tsv(header + rows2和3),chrX.tsv(header + row4), chrY.tsv(header + rows5and6)和chrM.tsv(header + last row).
myfile.tsv
chr value region
chr1 223 554
chr2 433 444
chr2 443 454
chrX 445 444
chrY 445 443
chrY 435 243
chrM 543 544
我有这些不同维度的矩阵.key.related.sheet所有矩阵中的列都有一些常见值和一些唯一值.我想匹配这些常见的行并合并所有三个矩阵,但我也想包含唯一的行.结果列应该只有key.related.sheet,Sample_B和trace_1,trace_2和trace_3列.有人可以帮我这个吗？
aa<-structure(c("S05-F13-P01:S05-F13-P01", "S05-F13-P01:S08-F10-P01",
"S05-F13-P01:S08-F11-P01", "S05-F13-P01:S09-F66-P01", "S05-F13-P01",
"S08-F10-P01", "S08-F11-P01", "S09-F66-P01", "1.25", "0.227",
"-0.183", "-0.217"), .Dim = c(4L, 3L), .Dimnames = list(NULL,
c("key.related.sheet", "sample_B", "trace_1")))
bb<-structure(c("S05-F13-P01:S08-F10-P01", "S05-F13-P01:S08-F11-P01",
"S05-F13-P01:S09-F66-P01", "S05-F13-P01:S09-F67-P01", "S08-F10-P01",
"S08-F11-P01", "S09-F66-P01", "S09-F67-P01", "0.227", "-0.183",
"-0.217", "0.292", "Unknown", "Unknown", "Unknown", "Unknown"
), .Dim = c(4L, 4L), .Dimnames = list(NULL, c("key.related.sheet",
"sample_B", "trace_2", "type")))
cc<-structure(c("S05-F13-P01:S08-F11-P01", "S05-F13-P01:S09-F66-P01",
"S05-F13-P01:S09-F67-P01", "S05-F13-P01:S09-F68-P01", "S05-F13-P01:S09-F01-P01",
"S08-F11-P01", "S09-F66-P01", "S09-F67-P01", "S09-F68-P01", "S09-F01-P01",
"-0.183", "-0.217", "0.292", "-0.314", "0.0418"), .Dim = …我有成千上万的MP3文件,但所有的不寻常的文件名,例如 1-2songone.mp3,2songtwo.mp3,2_2_3_songthree.mp3.我想删除这些文件开头的所有数字,破折号和下划线并获得结果:
songone.mp3
songtwo.mp3
songthree.mp3