How do I change a single value in a data.frame?

RDataframeCell

R Problem Overview

Could anyone explain how to change a single cell in a data.frame to something else. Basically I just want to rename that one cell, not all cells which matches it. I can´t use the edit() command because it will screw up my script since im using the data.frame on several occasions.

Thanks in advance

R Solutions

Solution 1 - R

data.frame[row_number, column_number] = new_value

For example, if x is your data.frame:

x[1, 4] = 5

Solution 2 - R

Suppose your dataframe is df and you want to change gender from 2 to 1 in participant id 5 then you should determine the row by writing "==" as you can see

 df["rowName", "columnName"] <- value
 df[df$serial.id==5, "gender"] <- 1

Solution 3 - R

To change a cell value using a column name, one can use

iris$Sepal.Length[3]=999

Solution 4 - R

In RStudio you can write directly in a cell. Suppose your data.frame is called myDataFrame and the row and column are called columnName and rowName. Then the code would look like:

myDataFrame["rowName", "columnName"] <- value

Hope that helps!

Categories
Recommended R Solutions
Recommended Dataframe Solutions
Recommended Cell Solutions

Previous Solution:

Is the viewport meta tag really necessary?

CssResponsive DesignViewport

Next Solution:

Get element of JS object with an index

JavascriptObject

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionPer M&#229;nssonView Question on Stackoverflow
Solution 1 - RMarcel HebingView Answer on Stackoverflow
Solution 2 - RMohamed RahoumaView Answer on Stackoverflow
Solution 3 - RuserJTView Answer on Stackoverflow
Solution 4 - RAnne van VughtView Answer on Stackoverflow