How can I unzip a local data file using RhoMobile - unzip

I am writing an app using RhoMobile.
There seems to be some permissions problem since System.unzip_file is not producing any results. My zip files is distributed with my app in the public folder. I am not able to unzip it at runtime though.
Any ideas?

Make sure you have the correct local path to the zip file. Use the local file access methods detailed here.
For example, you may do something like:
path_to_public = Rho::RhoApplication::get_public_folder # this would return something like /path/to/public
path_to_zip = "#{path_to_public}/file.zip"

Related

How to access local files from AzureML File Share?

Earlier when using AzureML from the Notebooks blade of Azure ML UI, we could access the local files in AzureML using simple relative paths:
For example, in the above image to access the CSV from the test.ipynb we could just mention the relative path:
df = pandas.read_csv('WHO-COVID-19-global-data.csv')
However, we are not able to do that anymore.
Also when we run
import os
os.getcwd()
We see the output as
'/mnt/batch/tasks/shared/LS_root/mounts/clusters/<cluster-name>'.
Hence, we are unable to access the files in the FileStore which was not the case earlier.
When we run the same from the JuyterLab environment of the compute environment we get:
'/mnt/batch/tasks/shared/LS_root/mounts/clusters/<cluster-name>/code/Users/<current-user-name>/temp'.
We can easily solve it by adding the path '/code/Users/<current-user-name>/temp' at the base and use that instead. But this is not recommended as with a change in the environment we are using the code needs to change every time. How do we resolve this issue without going through this path appending method.
I work on the Notebooks team in AzureML, I just tried this. Did this just start happening today?
It seems like things are working as expected:

Unable to use correct file paths in R/RStudio

Disclaimer: I am very new here.
I am trying to learn R via RStudio through a tutorial and very early have encountered an extremely frustrating issue: when I am trying to use the read.table function, the program consistently reads my files (written as "~/Desktop/R/FILENAME") as going through the path "C:/Users/Chris/Documents/Desktop/R/FILENAME". Note that the program is considering my Desktop folder to be through my documents folder, which is preventing me from reading any files. I have already set and re-set my working directory multiple times and even re-downloaded R and RStudio and I still encounter this error.
When I enter the entire file path instead of using the "~" shortcut, the program is successfully able to access the files, but I don't want to have to type out the full file path every single time I need to access a file.
Does anyone know how to fix this issue? Is there any further internal issue with how my computer is viewing the desktop in relation to my other files?
I've attached a pic.
Best,
Chris L.
The ~ will tell R to look in your default directory, which in Windows is your Documents folder, this is why you are getting this error. You can change the default directory in the RStudio settings or your R profile. It just depends on how you want to set up your project. For example:
Put all the files in the working directory (getwd() will tell you the working directory for the project). Then you can just call the files with the filename, and you will get tab completion (awesome!). You can change the working directory with setwd(), but remember to use the full path not just ~/XX. This might be the easiest for you if you want to minimise typing.
If you use a lot of scripts, or work on multiple computers or cross-platform, the above solution isn't quite as good. In this situation, you can keep all your files in a base directory, and then in your script use the file.path function to construct the paths:
base_dir <- 'C:/Desktop/R/'
read.table(file.path(base_dir, "FILENAME"))
I actually keep the base_dir assignemnt as a code snippet in RStudio, so I can easily insert it into scripts and know explicitly what is going on, as opposed to configuring it in RStudio or R profile. There is a conditional in the code snippet which detects the platform and assigns the directory correctly.
When R reports "cannot open the connection" it means either of two things:
The file does not exist at that location - you can verify whether the file is there by pasting the full path echoed back in the error message into windows file manager. Sometimes the error is as simple as an extra subdirectory. (This seems to be the problem with your current code - Windows Desktop is never nested in Documents).
If the file exists at the location, then R does not have permission to access the folder. This requires changing Windows folder permissions to grant R read and write permission to the folder.
In windows, if you launch RStudio from the folder you consider the "project workspace home", then all path references can use the dot as "relative to workspace home", e.g. "./data/inputfile.csv"

Copying a file to sharepoint through SAS unix

As a part of my work I need to create few reports in SAS and export them to sharepoint site. I am trying to automate this process as shown below.
call system ("cp -p file.xls https//sharepointsite/folder1/file.xls");
when i run this code, it is not giving any error in the code but the file not uploaded into sharepoint.
Could anyone suggest me the solution for this case.
Try the following in order to extract any errors into your log
data _null_;
infile "cp -p file.xls https//sharepointsite/folder1/file.xls" pipe;
input;
list;
run;
You can also try running the command directly from your SAS server, as a shell command. If that is successful, the above should be succesful (although I wasn't aware that uploading files to sharepoint was that straightforward).
Edit: from reading around, I think it IS possible, you just need to have your sharepoint location mapped to a local directory, and to have contributor rights on the site itself. In which case make sure you use the 'local' path for the URL..

Accessing Excel file from Sharepoint with R

am trying to write an R script that will access an Excel file that is stored on my company's Sharepoint page so that I can make a few calculations and plot the results. I've tried various ways to do this (download.file, RCurl getURL(), gdata), but I can't seem to figure out how to do this. The url is HTTPS and there should be a username and password required. I've gotten the closest with this code:
require(RCurl)
URL<-"https://companyname.sharepoint.com/sites/folder/_layouts/15/WopiFrame.aspx?sourcedoc={2DCC2ED7-1C13-4910-AFAD-4A9ACFF1C797}&file=myfile.xlsx&action=default'
f<-getURL(URL,verbose=T,ssl.verifyhost=F,ssl.verifypeer=F,userpwd="mylogin:mypw")
This seems to connect (although the username and password don't seem to matter) and returns
> f
[1] "<html><head><title>Object moved</title></head><body>\r\n<h2>Object moved to here.</h2>\r\n</body></html>\r\n"`
However, I'm not sure what to do at this point, or even if I'm on the right track. Any help will be greatly appreciated.
I use
library(readxl)
read_excel('//companySharepointSite/project/.../ExcelFilename.xlsx', 'Sheet1', skip=1)
Note, no https:, and sometimes I have to open the file first (i.e., cut and paste //companySharepointSite/project/.../ExcelFilename.xlsx into my browser's address bar)
I found that other answers did not work for me, perhaps because I am on a Mac, which obviously does not play as well with Microsoft products such as Sharepoint.
Ended up having to split it into two pieces: first download the Excel file to disk and then separately read that Excel file.
library(httr)
library(readxl)
# the URL of your sharepoint file
file_url <- "https://yoursharepointsite/Documents/yourfile.xlsx"
# save the excel file to disk
GET(file_url,
authenticate(active_directory_username, active_directory_password, "ntlm"),
write_disk("tempfile.xlsx", overwrite = TRUE))
# save to dataframe
df <- read_excel("tempfile.xlsx")
df
# remove excel file from disk
file.remove("tempfile.xlsx")
This gets the job done, though would be interested if anyone knows how to avoid the interim step of writing to disk.
N.B. Depending on your specific machine/network/Sharepoint configuration, you may also be able to just use authenticate(":",":","ntlm") per this answer.
I was unable to accomplish this using hints from answers above in R (I tried many approaches found on this site). However, just to highlight the response by #RyanBradley above and especially the response by #ZS27:
I instead had to use the OneDrive Desktop client (Windows) to allow me to sync the folder to my computer. Newer versions of SharePoint (like that found in MS Teams) have a sync button or feature in the document libraries / folders that interfaces with OneDrive.
This is the functional equivalent of mounting the folder as a network drive, so R interfaces with the file as if it was a part of your file system. Works for me.
You may need to map a network drive to the SharePoint library so that you can connect to it directly. Or if you don't want to map a network drive you could also place a shortcut to the folder in your startup folder.
Example file path:
\company_sharepoint_site\ssp\site_name\sub_site_name\library_name
Example start up folder location (Windows 10):
C:\Users\USER_NAME\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Note direction of the slashes ("\" rather than "/") is important so that your file path is interpreted as a file location, not an internet browser location. By placing such a path in a network drive or as a shortcut in your startup folder your PC should connect to it when it boots.
# Load or install readxl
if(require(readxl) == FALSE){
install.packages("readxl")
if(require(readxl)== FALSE){stop("Unable to install and load readxl")}
}
# Define path to data
data_path <- "\\\\company_sharepoint_site\\ssp\\site_name\\sub_site_name\\library_name\\Example.xlsx"
# Pull data
df_employees <- read_xlsx(data_path)
I had a situation exactly like you. I want to access an excel file, available on an sharepoint site using R programming language.
I have also surfed many stuff in Internet and I didn't find anything relevant to my requirement.
Then, I have attempted the following thing:
I have made the sharepoint folder as a network drive folder, in my local system.
Then, I have accessed that excel file(in sharepoint site) from my machine without accessing web browser.
Hence, I have copied the network path, present in my system (it will be same as your sharepoint site, however it will not have https/http.
The site will start with "\" like the following: "\sharepoint.test.com\folder\path").
Launch RStudio and select Import Dataset option, under Environment section.
Choose 'From Excel'. 'Import Excel Data' form will be opened.
Under File/URL field: Paste the network path of sharepoint (copied from your machine).
Click Import, the excel file in Sharepoint will be imported in R successfully.
Ensure that the file should not have html language as input (lie %20 and all) and Backslash should be used as separator in the URL.
While importing the file, provide the input of the folder name exactly, as you see.
For example:
Sharepoint.microsoft.com - Sharepoint's Domain
Department name - name of the Folder
Project name - name of the folder
Sample.xlsx - name of the file
So, your URL to import dataset should be:
"\Sharepoint.microsoft.com\Department name\Project name\Sample.xlsx".
Thank you!
Try using the link in this format:
http://site/_layouts/download.aspx?SourceUrl=url-of-document-in-library
If above doesn't work try this syntax [note slash directions]:
"\\gov.sharepoint.com#SSL/DavWWWRoot/sites/SomePath/SomePath/SomePath/SomeFile"
See this for more info about syntax and what's going on:
Connect to a site via SSL/DavWWWRoot not usual URL? Why does this make a difference?

csv files in opencpu

If I put a very small csv file in my GitHub directory so that it gets copied to /ocpu/github/username/projectname/www/ , will I be able to access the contents of the csv for use in a R function? I tried to ajax the file, but I get a 404 error even though I can see the csv file sitting in the www directory of my local server. I need to have the csv on the server as a static file rather than being uploaded by a function. Thanks
You should be able to access them like any other file. Can you post an example that shows what you are doing and what error you are getting?
That said, if you just want to use this data in your R functions, it is better to include it in the R package as an actual data file. Also see section 1.1.6 of Writing R Extensions. An example is the mapapp package, which includes a dataset called countryExData. Also see the live app.

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