strsplit

R: splitting a numeric string

由 ▼魔方 西西 提交于 2019-12-10 21:09:29
问题 I'm trying to split a numeric string of 40 digits (ie. splitting 123456789123456789123456789 into 1 2 3 4 etc.) Unfortunately strsplit doesn't work as it requires characters, and converting the string using as.character doesn't work as it is very long and R automatically cuts off decimals for long digits (maximum is 22 decimals). I thus end up with "1.2345e+35" as a character string, instead of the full digit. Is there a numeric variant of strsplit , or a work around to the decimal-cutting

Count characters of a section of a string

由 走远了吗. 提交于 2019-12-10 13:39:50
问题 I have this df: dput(df) structure(list(URLs = c("http://bursesvp.ro//portal/user/_/Banco_Votorantim_Cartoes/0-7f2f5cb67f1-22918b.html", "http://46.165.216.78/.CartoesVotorantim/Usuarios/Cadastro/BV6102891782/", "http://www.chalcedonyhotel.com/images/promoc/premiado.tam.fidelidade/", "http://bmbt.ro/portal/a3/_Votorantim_/VotorantimCartoes2016/0-7f2f5cb67f1-22928b.html", "http://voeazul.nl/azul/")), .Names = "URLs", row.names = c(NA, -5L), class = "data.frame") It describes different URLs and

Add a function to Matlab path

由 冷暖自知 提交于 2019-12-10 10:12:48
问题 I am trying to add the strsplit function to my MATLAB path, but I don't know how to do it. Link : strsplit function I am trying to use the function for my work, but somehow that function does not exist in my version of MATLAB that i currently have. 回答1: strsplit is not a matlab function, in the sense that it does not come with MATLAB, your link is to the mathworks file exchange which is a community of MATLAB users. You can use the dialog box in the "File"->"Set Path" menu to add the file to

Strange behavior of strsplit() in R?

由 雨燕双飞 提交于 2019-12-08 13:13:11
问题 I would like to split the string x = "a,b," (comma at the last place) into the vector c("a","b","") using strsplit() . The result is: >strsplit(x,',') [[1]] [1] "a" "b" I would like the have the third component (empty string or NULL). The function read.csv(x) can manage that, but still I think that strsplit() should behave as I expected. Python gives c("a","b","") . Maybe there is some option of strsplit() I do not know? 回答1: That's how it works and is documented in help(strsplit): Note that

R: How to separate string in a cell into several cells in a row?

由 本小妞迷上赌 提交于 2019-12-08 03:41:48
问题 I have following data Data <- data.frame( X = ("123 234 345 456","222 333 444 555 666" ) ) Data # X # 123 234 345 456 # 222 333 444 555 666 A String in one cell, and the length of string is not same in each row I want the following result >Result # X Y Z A B # 123 234 345 456 # 222 333 444 555 666 one word in one cell Can anybody help? 回答1: strsplit is not required here. read.table should work fine. Try: read.table(text = as.character(Data$X), header=FALSE, fill=TRUE) You will have to rename

strsplit on first instance [duplicate]

由 谁说胖子不能爱 提交于 2019-12-06 17:04:06
问题 This question already has answers here : Splitting a string on the first space (6 answers) Closed last year . I would like to write a strsplit command that grabs the first ")" and splits the string. For example: f("12)34)56") "12" "34)56" I have read over several other related regex SO questions but I am afraid I am not able to make heads or tails of this. Thank you any assistance. 回答1: You could get the same list-type result as you would with strsplit if you used regexpr to get the first

Add a function to Matlab path

由 旧巷老猫 提交于 2019-12-06 02:13:54
I am trying to add the strsplit function to my MATLAB path, but I don't know how to do it. Link : strsplit function I am trying to use the function for my work, but somehow that function does not exist in my version of MATLAB that i currently have. strsplit is not a matlab function, in the sense that it does not come with MATLAB, your link is to the mathworks file exchange which is a community of MATLAB users. You can use the dialog box in the "File"->"Set Path" menu to add the file to your path. This is assuming you have actually the file and for some reason it is not on your path. From the

best way to manipulate strings in big data.table

由 喜欢而已 提交于 2019-12-05 20:50:08
I have a 67MM row data.table with people names and surname separated by spaces. I just need to create a new column for each word. Here is an small subset of the data: n <- structure(list(Subscription_Id = c("13.855.231.846.091.000", "11.156.048.529.090.800", "24.940.584.090.830", "242.753.039.111.124", "27.843.782.090.830", "13.773.513.145.090.800", "25.691.374.090.830", "12.236.174.155.090.900", "252.027.904.121.210", "11.136.991.054.110.100" ), Account_Desc = c("AGUAYO CARLA", "LEIVA LILIANA", "FULLANA MARIA LAURA", "PETREL SERGIO", "IPTICKET SRL", "LEDESMA ORLANDO", "CATTANEO LUIS RAUL",

Using strsplit() in R, ignoring anything in parentheses

由 Deadly 提交于 2019-12-05 12:16:26
问题 I'm trying to use strsplit() in R to break a string into pieces based on commas, but I don't want to split up anything in parentheses. I think the answer is a regex but I'm struggling to get the code right. So for example: x <- "This is it, isn't it (well, yes)" > strsplit(x, ", ") [[1]] [1] "This is it" "isn't it (well" "yes)" When what I would like is: [1] "This is it" "isn't it (well, yes)" 回答1: We can use PCRE regex to FAIL any , that follows that a ( before the ) and split by , followed

Non character argument in R string split function (strsplit)

由 冷暖自知 提交于 2019-12-05 08:47:57
问题 This works x <- "0.466:1.187:2.216:1.196" y <- as.numeric(unlist(strsplit(x, ":"))) Values of blat$LRwAvg all look like X above but this doesn't work for (i in 1:50){ y <- as.numeric(unlist(strsplit(blat$LRwAvg[i], "\\:"))) blat$meanLRwAvg[i]=mean(y) } Because of: Error in strsplit(blat$LRwAvg[i], "\:") : non-character argument It doesn't matter if I have one, two or null backslashes. What's my problem? (Not generally, I mean in this special task, technically) 回答1: As agstudy implied blat
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