How to save data file into RData

Question

I want to save data into an  RData file   For instance  I d like to save into 1 RData with two csv files and some information   Here  I have two csv files   1  file 1 csv contains object city  1   2  file 2 csv contains object city  2     and additionally save other values  country and population as follows  So  I guess I need to make objects  city  from two csv files first of all   The structure of 1 RData may looks like this    gt  data   load  1 RData     gt  data  1   city    country    population    gt  city     1                    NEW YORK         1 1   SAN FRANCISCO    3 1      2     TEXAS            1 3   SEATTLE          1 4   gt  class city     1   list    gt  country    1   east    west    north    gt  class country     1   character    gt  population    1  10  11  13  14      gt  class population     1   integer    file 1 csv and file 2 csv have bunch of rows and columns   How can I create this type of RData with csv files and values

User · Answer

Alternatively  when you want to save individual R objects  I recommend using saveRDS    You can save R objects using saveRDS  then load them into R with a new variable name using readRDS   Example     Save the city object saveRDS city   city rds             Load the city object as city city  lt - readRDS  city rds      Or with a different name city2  lt - readRDS  city rds     But when you want to save many all your objects in your workspace  use Manetheran s answer

User · Answer

There are three ways to save objects from your R session   Saving all objects in your R session   The save image   function will save all objects currently in your R session   save image file  1 RData      These objects can then be loaded back into a new R session using the load   function   load file  1 RData     Saving some objects in your R session   If you want to save some  but not all objects  you can use the save   function   save city  country  file  1 RData     Again  these can be reloaded into another R session using the load   function   load file  1 RData      Saving a single object  If you want to save a single object you can use the saveRDS   function   saveRDS city  file  city rds   saveRDS country  file  country rds      You can load these into your R session using the readRDS   function  but you will need to assign the result into a the desired variable   city  lt - readRDS  city rds   country  lt - readRDS  country rds     But this also means you can give these objects new variable names if needed  i e  if those variables already exist in your new R session but contain different objects    city list  lt - readRDS  city rds   country vector  lt - readRDS  country rds

User · Answer

Just to add an additional function should you need it  You can include a variable in the named location  for example a date identifier   date  lt - yyyymmdd save city  file paste0  c   myuser  somelocation    date   RData Data     This was you can always keep a check of when it was run

[r] How to save data file into .RData?

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