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Is there any method in R to find out what data-sets have been attached. In my work flow i use the console and build a script. I try out the lines of code in console and once i am satisfied with the results, i add them to a script so that I can reproduce the results later. For past week i have been playing with a few data-sets. I think I attached and detached a number of them over time. But now I need to know what data-sets are current attached, so that I can detach them.
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To get the list of available data sets in base R we can use data() but to get the list of data sets available in a package we first need to load that package then data() command shows the available data sets in that package. Also, for data sets in base R, we can use ls("package:datasets").
When you create an object, the object will appear in the environment pane of RStudio, as shown in Figure 1-2. This pane will show you all of the objects you've created since opening RStudio. Figure 1-2. The RStudio environment pane keeps track of the R objects you create.
Use search() to find out which objects are attached.
Since this will also tell you about all packages that are attached, you can use a regular expression to remove the packages from the search results:
Attach mtcars:
attach(mtcars)
The following object(s) are masked from 'package:ggplot2':
mpg
Now use search() and a regexp:
attached <- search()
attached[!grepl("package", attached)]
[1] ".GlobalEnv" "mtcars" "tools:rstudio" "Autoloads"
I guess you are searching for the search() command. This should show the attached dataframes and packages you have included.
also type help(search) and check what it is doing.
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