Can someone give me any hint why I'm getting an error message here? If I run this code where it's not in gray, it runs. When I copy/paste it to the gray section, I get an error.
Again, brand new to R here, so I'm sure it's something obvious but trying to get through an assignment and stuck here.enter image description here
My guess from the picture (post your code next time not a picture) is that your working directory isn't where your file is located. Use setwd("your file path here") to specify to R where your file of interest is located.
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I have a problem that would be difficult to replicate, thats why i just want ideas of what could be behind this error. When i create a docx an want to save it in the NAS in my office, i would get this error (where doc2 is the docx and Direc4 is my direction):
Error in print.rdocx(doc2, target = Direc4) :
H:\DpProMon\DPM\Programa Monetario Diario\2021\Actas\23 Ago Informe
comité monetario y cambiario.docx is already edited. You must close
the document in order to be able to write the file.
Nevertheless, the File dont exist yet. what could be going on?
Sometimes when im triying to save an actual Word using office, i could get an error that someone else is editing the file (while thats not actually true), and that error would dissapear after a couple seconds. But in R this error doesnt stops. Some help?
In my case I couldn't find the temp file. I deleted cache, temp files from word and local, hidden files in my folder..etc. Could be because in my case I'm using GitHub desktop and also Dropbox so maybe that adds more temp files. The only solution was to change the name of the printed file each time you want to save it. Silly but works.
I'm on RStudio, just wanting to read a csv file:
newdata <- read_csv("Nameofdata.csv",
col_names = TRUE)
But it keeps telling me that the file doesn't exist. It does exist. I'm staring DIRECTLY at it, underneath the file path that RStudio insists is wrong. I can open it in another tab, I can open in in excel, it's EXACTLY where RStudio says it's not existing. Please help.
Looking very closely at your screen shot, commenters are suggesting that you have an extra space at the beginning of your file name.
Also, I see that the working directory appears to be correct (the error message lists it as C:/users/mdavi/Desktop/School/Research/Sc, which appears to match what is listed in the Files pane
A couple of strategies for trouble-shooting file-locating problems:
use getwd() and list.files() to confirm your working directory and what files R can see from there (you can read this introduction to get more background on working directories):
use file.choose() to select a file interactively; it's generally a bad idea to use this in production code, as it will add an interactive step when you usually want to be able to run all of your code start to finish without needing manual steps, but it's quite useful for debugging.
If you wanted R to list files that approximately matched your specified filename, you could use
L <- list.files(pattern="*.csv")
agrep("myfile.csv", L, value=TRUE)
You need to set your working directly correctly, either via setwd("~/Desktop/School/Research/SC") in the R Console (that's what I think I see in your screenshot: ~ stands for your home directory, i.e "Users/Whoever") or via Session > Set Working Directory > To File Pane in the RStudio menus.
You can read a variety of Stack Overflow questions about setting the working directory for more complete context ... web searching on "R 'working directory'" might help too.
so I have a Shiny app where I'm trying to read in a user-identified input file.
Towards that end, my ui.R has the line fileInput("predictor2", label = "Predictor Values") and I try to read the file using the line predictor <- read.delim("input$predictor2") in my server.R file.
However, I get a message saying Error: Cannot open the connection. If I don't try to read in the file and use another matrix of values, the code works fine. Any advice for how to fix this problem or more detail that would be useful?
You code is looking for a file with the literal name input$predictor2 which presumably does not exist. You first need to remove the quotes from around it, then add which column of the return actually has the path to the data, e.g.:
read.delim(input$predictor2$datapath)
See the help for fileInput for an example that checks to make sure something has been uploaded first.
I'm making a simple line in r to automatically open my generated plots.
I output the plots to a file called "plots.pdf" in the same directory as my r file, and at the end i use this two lines to try to open it:
dir <- paste("/Applications/Skim.app/Contents/MacOS/Skim ",getwd(),"/plots.pdf",sep="")
system(dir)
Basically, dir concatenates the full path of the skim app and the full path of the generated plot.
If i run the string stored at dir in a shell it works perfect, it opens the pdf file in Skim, but when i run it with system() from inside R it doesn't work (Skim says 'The document “plots.pdf” could not be opened.').
I believe this is a very little mistake somewhere in the syntax regarding the absolute/relative paths, but haven't managed to find it... Any advice is welcome! (Or a better way to achieve the same)
I found a way to bypass that problem, i just changed the path to Skim for the 'open' command and i let the system to assign the default app for pdf viewing. So:
dir <- paste("open ",getwd(),"/plots.pdf",sep="")
And it works.
I am trying to edit a dataframe, content and titles from R.
there is a command edit(), but you can also invoke a vi editor by using vi([data.frame]).
You can view it and edit, it, but it saves the file to a file that I don't seem able to access and turn into a new edited data.frame.
example:
data(Orange)
test <- vi(Orange)
you should bring up a vi editor, and can change things here. if you save it, it creates a separate file in some temp directory. When you go back to R, and look at test, you'll see that none of your changes are in there.
Anyone know how to invoke a vi editor on the data.frame, such that the changes will be saved to a new data.frame?
I am running the same setup: OSX and R 3.0.1 and don't have an issue -- perhaps you're missing the saving step?
data(Orange)
test <- vi(Orange)
Then i edit the first data point, and hit the red button -- which opens a dialog box to save. You can also select save by hitting Command-S or selecting it from the menu.
This will not alter Orange, but it will pass the altered Orange to test.