t********m
发帖数: 939 | 1 有没有一个简单点的方法，类似于rbind(data1-data1000)的，求各位不吝赐教，谢谢
！ |
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t********m
发帖数: 939 | 2 【 以下文字转载自 DataSciences 讨论区 】
发信人: tulipdream (xiaohuaidan), 信区: DataSciences
标 题: 请教一个R问题：怎么rbind一系列data，如data1，data2,....data1000
发信站: BBS 未名空间站 (Thu Nov 13 17:35:36 2014, 美东)
有没有一个简单点的方法，类似于rbind(data1-data1000)的，求各位不吝赐教，谢谢
！ |
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l******g
发帖数: 188 | 3 get the total number of unique lines across a data set of 1000 gzipped text
files.
for instance: If every file has two lines, "this is line1" and "this a
line2", then the total count of lines is 2000, and total number of unique
lines is 2.
1 1000 machines where each machine has one gzipped text file with an
approximate size of 50GB. The file on each machine is /0/data/foo.txt.gz
2 1000 machines are named data1, data2,..data1000.
3 Data format ASCII text.
4 we have 11 machines named res1, res2…r... 阅读全帖 |
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l******g
发帖数: 188 | 4 get the total number of unique lines across a data set of 1000 gzipped text
files.
for instance: If every file has two lines, "this is line1" and "this a
line2", then the total count of lines is 2000, and total number of unique
lines is 2.
1. 1000 machines where each machine has one gzipped text file with an
approximate size of 50GB. The file on each machine is /0/data/foo.txt.gz
2. 1000 machines are named data1, data2,..data1000.
3. Data format ASCII text.
4. we have 11 machines named res1, re... 阅读全帖 |
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k*******a
发帖数: 772 | 5 如果data1-data1000在一个list的话，就用do.call函数
否则可以试试
mycall = c("rbind", paste0("data", 1:1000))
mycall = lapply(mycall, as.name)
result = eval(as.call(mycall)) |
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o**o
发帖数: 58 | 6 rbindlist
或者do.call(rbind, list()) |
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n*****3
发帖数: 1584 | 7 if there are patterns in the names, or you want to rbind all the datasets in
the namespace,
you can get/mget them to a list,
then Reduce(..., rbind( ), ).. |
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