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How to Import Data; Copy Data from Excel to R: .csv & .txt Formats (R Tutorial 1.5) Video Lecture | Mastering R Programming: For Data Science and Analytics - Database Management

51 videos
Video Timeline
Video Timeline
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00:17 What are the two main file types for saving a data file (CSV & TXT)
00:36 How to save an Excel file as a CSV file (comma-separated value)
01:10 How to open a CSV data file in Excel
01:20 How to open a CSV file in a text editor
01:36 How to import CSV file into R? using read.csv function
01:44 How to access the help menu for different commands/functions in R
02:04 How to specify file location for R? using file.choose argument on read.csv function
02:31 How to let R know our data has headers or variable names when importing the data into R? By using the “header” argument on read.csv function
03:22 How to import CSV file into R? using read.table function
03:38 How to specify the file location for the read.table function in R? using file.choose argument
03:46 How to specify how variables/columns are separated when importing data into R? the ""sep"" argument on read.table function will do that; for example if you don't specify that your data is comma separated, R ends up reading it all in as one variable
04:10 How to save a file in Excel as tab-delimited text (TXT) file
04:50 How to open a tab-delimited (.TXT) data file in a text editor
05:07 How to open a tab-delimited (.TXT) data file in excel
05:20 How to import tab-delimited (.TXT) data file into R? using read.delim function
05:44 How to specify the file path for read.delim function in R? using file.choose argument
06:06 How to import tab-delimited (.TXT) data file into R? using read.table function
06:23 How to specify that the data has headers or variable names when importing the data into R? using header argument on read.table function
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FAQs on How to Import Data; Copy Data from Excel to R: .csv & .txt Formats (R Tutorial 1.5) Video Lecture - Mastering R Programming: For Data Science and Analytics - Database Management

1. How do I import data from an Excel file into R using the .csv format?
Ans. To import data from an Excel file in .csv format into R, you can use the following code: ```R data <- read.csv("path/to/your/file.csv") ``` Replace "path/to/your/file.csv" with the actual file path on your computer.
2. Can I import data from an Excel file in .txt format into R?
Ans. Yes, you can import data from an Excel file in .txt format into R. The process is similar to importing a .csv file. Use the following code: ```R data <- read.table("path/to/your/file.txt", header = TRUE) ``` Make sure to set the "header" argument to TRUE if your .txt file has a header row.
3. How can I copy data from Excel and paste it directly into R?
Ans. To copy data from Excel and paste it directly into R, follow these steps: 1. Select the data you want to copy in Excel. 2. Press Ctrl+C (or Command+C on Mac) to copy the data. 3. In R, use the following code to create a data frame with the copied data: ```R data <- read.table("clipboard", header = TRUE) ``` This will read the data from your clipboard into R.
4. Is it possible to import only specific columns from an Excel file into R?
Ans. Yes, it is possible to import only specific columns from an Excel file into R. Use the following code: ```R data <- read.csv("path/to/your/file.csv", usecols = c("column1", "column2")) ``` Replace "column1" and "column2" with the actual names of the columns you want to import. You can specify multiple columns by separating them with commas.
5. How can I handle missing values when importing data from Excel into R?
Ans. When importing data from Excel into R, missing values are usually represented as "NA". By default, R recognizes "NA" as missing values. If your Excel file uses a different representation for missing values, you can specify it using the "na.strings" argument. For example: ```R data <- read.csv("path/to/your/file.csv", na.strings = c("", "NA", "N/A")) ``` This code will treat empty cells, "NA", and "N/A" as missing values when importing the data.
51 videos
Video Timeline
Video Timeline
arrow
00:17 What are the two main file types for saving a data file (CSV & TXT)
00:36 How to save an Excel file as a CSV file (comma-separated value)
01:10 How to open a CSV data file in Excel
01:20 How to open a CSV file in a text editor
01:36 How to import CSV file into R? using read.csv function
01:44 How to access the help menu for different commands/functions in R
02:04 How to specify file location for R? using file.choose argument on read.csv function
02:31 How to let R know our data has headers or variable names when importing the data into R? By using the “header” argument on read.csv function
03:22 How to import CSV file into R? using read.table function
03:38 How to specify the file location for the read.table function in R? using file.choose argument
03:46 How to specify how variables/columns are separated when importing data into R? the ""sep"" argument on read.table function will do that; for example if you don't specify that your data is comma separated, R ends up reading it all in as one variable
04:10 How to save a file in Excel as tab-delimited text (TXT) file
04:50 How to open a tab-delimited (.TXT) data file in a text editor
05:07 How to open a tab-delimited (.TXT) data file in excel
05:20 How to import tab-delimited (.TXT) data file into R? using read.delim function
05:44 How to specify the file path for read.delim function in R? using file.choose argument
06:06 How to import tab-delimited (.TXT) data file into R? using read.table function
06:23 How to specify that the data has headers or variable names when importing the data into R? using header argument on read.table function
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