Suppose I have an existing data frame that I want to use in a reprex. Is there a way to generate the R code necessary to recreate the data frame?
That is, say I’ve read in a data table from a CSV file and use dplyr::head() to get its first five rows. I want the code to create this 5-row table.
Related
I want to use the activity_stats function (and others) on a data set that has several dozen subjects. Based on the documentation, it looks like I have to make a separate data frame for each subject, and then run the functions on each individual data frame. Is that the case?
https://github.com/martakarass/arctools#using-arctools-package-to-compute-physical-activity-summaries
I have two files with huge data set, below is the sample data mentioned,
Trying to map Unique BIN number from 2nd file to 1st one(output as below)
I am able to create this in excel by using the countif function with multiple conditions but unable to do it in R. pls help to create code for the same.
Can you explain how to build this logic using R
I have to deal with data organized by row. So, R reads observation as variables and variables as observation. I have tried to transpose using function t() but R changed all data to character.
The original file is a .csv one.
Thank you.
It's the first time I deal with Matlab files in R.
The rationale for saving the information in a .mat file type was the length. (the dataset contains 226518 rows). We were worried to excel (and then a csv) would not take them.
I can upload the original file if necessary
So I have my Matlab file and when I open it in Matlab all good.
There are various arrays and the one I want is called "allPoints"
I can open it and then see that it contains values around 0.something.
Screenshot:
What I want to do is to extract the same data in R.
library(R.matlab)
df <- readMat("170314_Col_HD_R20_339-381um_DNNhalf_PPP1-EN_CellWallThickness.mat")
str(df)
And here I get stuck. How do I pull out "allPoints" from it. $ does not seem to work.
I will have multiple files that need to be put together in one single dataframe in R so the plan is to mutate each extracted df generating a new column for sample and then I will rbind together.
Could anybody help?
I have a list that consists of a large number of data frames, and every time R crashes I lose the variable and have to recreate it. The problem is that my list of data frames is pretty large and takes several hours to recreate.
Is there anyway to save/export this list so I can just load it into R at my convenience (without having to recreate it)?