You can use one of the following methods to select rows by condition in R: Method 1: Select Rows Based on One Condition. df[df$var1 == ' value ', ] Method 2: Select Rows Based on Multiple Conditions. df[df$var1 == ' value1 ' & df$var2 > value2, ] Method 3: Select Rows Based on Value in List. df[df$var1 %in% … See more The following code shows how to select rows based on one condition in R: Notice that only the rows where the team is equal to ‘A’ are selected. … See more The following code shows how to select rows where the value in a certain column belongs to a list of values: Notice that only the rows where the team is equal to ‘A’ or ‘C’ are selected. See more The following code shows how to select rows based on multiple conditions in R: Notice that only the rows where the team is equal to ‘A’ … See more The following tutorials explain how to perform other common operations in R: How to Select Rows Where Value Appears in Any Column in R How to Select Specific Columns in R How to Select Columns by … See more WebApr 21, 2024 · I have 3-dimensional array named as bfrag.mat file. In bfrag.mat file I have 2x16x16 frag file and Int_m file associated with frag array (i.e. each frag file column is associated with Int_m file column and so on). I want to extract a number (say greater than 10%) from frag file and corresponding value from Int_m file and record in a new matrix ...

Get Row Indices where Column has Particular Value in …

WebExample 1: Get One Specific Row of Data Frame. In case we want to extract a specific row of our example data, we can specify within square brackets the row index of the … WebApr 3, 2024 · Addin for Teaching. The package also comes with several RStudio addins that solve some common functions for leaning or teaching R and for developing packages. The biggest one is the Tutorialise adding. Let’s say, you have the code for a tutorial ready and a general plan on how to proceed. jjay bursar office

How to Retrieve Row Numbers in R (With Examples) - Statology

WebOct 29, 2024 · How to Retrieve Row Numbers in R (With Examples) Often you may want to get the row numbers in a data frame in R that contain a certain value. Fortunately this is easy to do using the which () function. This tutorial shows several examples of how to use this function in practice. Example 1: Get Row Numbers that Match a Certain Value WebSep 7, 2024 · As previously commented, you may accomplish all your task using R exclusively; in the following code, a raster is created and then filtered to values above the threshold, all other values will become NA, then the pixels are masked to the lines. Raster works now in recent versions with both sf and sp objects, the code uses the latter kind. WebDec 13, 2024 · By default, the indexes start with 1. Syntax: df [ [ col-index]] OR df$col-name Example 1: R data_frame1 = data.frame(col1 = letters[1:4], col2 = c(5:8) , col3 = TRUE) print ("DataFrame1") print (data_frame1) data_frame2 = data.frame(col1 = c(6:9), col2 = LETTERS[1:4]) print ("DataFrame2") print (data_frame2) instant pot tomatoes and zucchinni