How to open CSV file in R when R says "no such file or directory"?
error in file(file, "rt") : cannot open the connection
r import csv
convert csv to dataframe in r
r not reading csv correctly
r read csv only certain columns
r read.csv column names
write.csv in r
I have an excel file that I want to open in R. I tried both of these commands after saving the excel file as a csv file or a text file.
read.table() or read.csv()
I think part of the problem is where the file is located. I have it saved on the desk top. What am I missing here?
Here is the R output
In file(file, "rt") : cannot open file 'Rtrial.csv': No such file or directory > help.search("read.csv") > read.csv("Rtrial.csv") Error in file(file, "rt") : cannot open the connection In addition: Warning message: In file(file, "rt") : cannot open file 'Rtrial.csv': No such file or directory > read.table("tab")
To throw out another option, why not set the working directory (preferably via a script) to the desktop using
setwd('C:\John\Desktop') and then read the files just using file names
How to open CSV file in R when R says "no such file or directory , To throw out another option, why not set the working directory (preferably via a script) to the desktop using setwd('C:\John\Desktop') and then Keep your.r and.csv files in the same directory. open your.r file from getting into its directory instead of opening the r file from rstuio's open file option. You also have import Dataset option at Environment Block, just click there and get your required packages installed & from next time use this option to read datasets.
f <- file.choose()
to choose the file interactively and save the name in
read.csv on the saved filename
d <- read.csv(f)
Importing CSV files into R, As part of the WIPO Manual on Open Source Patent Analytics project we will This walk through covers the basics of importing .csv files into R and writing In this case we are saying “apply list apply to the R character object Great! We should now have a .csv file that is ready to be read into R! To open this file in R, we need to open R. Once R is open, we need to start a new script. To do so, go to File, and then click on New Script (as seen below). Now, you should have a new window. You can think of these as separate input and output windows.
Sound like you just have an issue with the path. Include the full path, if you use backslashes they need to be escaped:
myfile = read.csv("C:/folder/folder/Desktop/file.csv") # or read.table()
It may also be wise to avoid spaces and symbols in your file names, though I'm fairly certain spaces are OK.
Reading and Writing CSV Files – Programming with R, How do I read data from a CSV file into R? Import the data and look at the first six rows carSpeeds <- read.csv(file = 'data/car-speeds.csv') head(carSpeeds) For example, let's say we find out that the data collector was color blind, and Once the data frame is created it’s time we use R’s export function to create CSV file in R. In order to export the data-frame into CSV we can use the below code. > write.csv(df, 'C:\\Users\\Pantar User\\Desktop\\Employee.csv', row.names = FALSE)
I had to combine Maiasaura and Svun answers to get it to work: using setwd and escaping all the slashes and spaces.
setwd('C:\\Users\\firstname\ lastname\\Desktop\\folder1\\folder2\\folder3') data = read.csv("file.csv") data
This solved the issue for me.
This R Data Import Tutorial Is Everything You Need, table, please consult the R documentation. > help(read.table). CSV File. The sample data can also be in comma separated values ( Timeline for How to open CSV file in R when R says “no such file or directory”? Current License: CC BY-SA 2.5. 3 events when toggle format
Here is one way to do it. It uses the ability of R to construct file paths based on the platform and hence will work on both Mac OS and Windows. Moreover, you don't need to convert your xls file to csv, as there are many R packages that will help you read xls directly (e.g. gdata package).
# get user's home directory home = setwd(Sys.getenv("HOME")); # construct path to file fpath = file.path(home, "Desktop", "RTrial.xls"); # load gdata library to read xls files library(gdata); # read xls file Rtrial = read.xls(fpath);
Let me know if this works.
Importing Data into R, Load data from a .csv file using the read.csv command. # use the read.csv command followed by the file path # row.names=1 tells R that the data in the first CSV files are Comma-Separated Values Files used to represent data in the form of a table. These files can be read using R and RStudio. Data frames are used in R to represent tabular data. When you read a CSV file, a data frame is created to store the data. You can access and modify the values, rows, and columns of a data frame.
Data Import, There are numerous ways to get data into R. Here, I will go over getting a .csv into Open up RStudio, in the Files tab, click Upload, and choose your csv file. In R, we can read data from files stored outside the R environment. We can also write data into files which will be stored and accessed by the operating system. R can read and write into various file formats like csv, excel, xml etc. In this chapter we will learn to read data from a csv file and then write data into a csv file.
Reading and Writing .csv Files in RSudio, Importing data into R is a necessary step that, at times, can become Importing "From Text (readr)" files allows you to import CSV files and in Reading a CSV File in R: read.csv() is the function to read a CSV file in R. (i) If the file is available in your current working directory # read a csv file in R mydata = read.csv("input.csv") # reads the csv file in R object named mydata print(mydata)
Getting your data in RStudio.stat511, OpenOffice.org 3.0.1 can open, edit, create and print file extension r.CSV files Download Now OpenOffice.org Website OpenOffice.org is a free office productivity suite similar to Microsoft Office.
- It would in general be useful to provide more information; in this particular case it's hard to make a truly reproducible example, but you could at least show the full command you tried, and the output of getwd() [i.e., show your working directory]
- for general advice of opening excel files (xls, xlsx), see stackoverflow.com/questions/6099243/…
- +1: this is a great idea; if you change your directory structure then all that needs to change is this one line.
- Still not clear to me why the original poster was getting a permissions error in one of the iterations, then ...
- for unix based, should be like this
- Nice one is this
- But then you have to choose the file manually every time you run the script.
- True. This is more useful for exploratory analysis than scripting. It also can help to figure out the proper name and path of a file, which can then be written out as in Benjamin's answer.
- Error in file(file, "rt") : cannot open the connection In addition: Warning message: In file(file, "rt") : cannot open file 'C:\Documents and Settings\Manley\Desktop': Permission denied >
- @illbill: Now it seems to be a permissions issue. Is it read only? Do you have read rights?
- @Svun is probablity right. R won't read the file if it is already open in Excel.
- On WinXP (and possibly other Windows) the
HOMEenvironment variable points to
My Documents, and the desktop is in the parent of that folder. You either need
Sys.getenv("USERPROFILE")if it exists, or
paste(Sys.getenv("HOMEDRIVE"), Sys.getenv("HOMEPATH"), sep = "").
- @Richie. Thanks for the pointer. I use Mac OS, so was assuming that HOME would point to the parent of desktop.
- On the mac HOME points to your /Users folder (usually this is your name), so yes, this is the parent folder of the Desktop