Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Nizamuddin Siddiqui
Page 110 of 196
How to display text in bar plot in the middle using ggplot2 in R?
To display text in bar plot in the middle using ggplot2 in R, we can follow the below steps −First of all, create a data frame.Then, use ggplot function and geom_bar function to create the bar plot along with geom_text function to display the text in the middleExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to plot matrix elements using corrplot in R?
To create a plot of matrix elements with the help of corrplot function, we would need to set is.corr argument to FALSE so that the matrix values will be plotted in the diagram, otherwise, the corrplot function requires correlation matrix instead of a matrix hence there will be an error as shown in the Example below.ExampleConsider the matrix given below −M
Read MoreHow to draw concentric circles in R?
To draw concentric circles, we can use draw.circle function of plotrix package but firstly, we would need to create a blank graph with plot function as shown below.For Example, we can create three concentric circles at position X=5 and Y=5 having radius of 1, 2, and 3 by using the below command −draw.circle(5, 5, c(3, 2, 1), col=c("blue", "red", "green"))ExampleTo create three concentric circles at position X=5 and Y=5 having radius of 1, 2, and 3 add the following code to the above snippet −plot(1:10, type="n")OutputIf you execute all the above given snippets as a single program, it generates the ...
Read MoreHow to convert values greater than a threshold into 1 in R data frame column?
To convert values greater than a threshold into 1 in R data frame column, we can follow the below steps −First of all, create a data frame.Then, use ifelse function to convert values greater than a threshold into 1.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to subset R data frame rows if at least one or more values matches?
To subset R data frame rows if at least one or more values matches, we can follow the below steps −First of all, create a data frame.Then, use rowSums function along with sapply function and values for match to subset the data frame rows if at least one or more values matches.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to repeat column values in R data frame by values in another column?
To repeat column values in R data frame by values in another column, we can follow the below steps −First of all, create a data frame.Then, use rep function along with cbind function to repeat column values in the matrix by values in another column.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to standardize selected columns in R data frame?
To standardize selected columns in R data frame, we can follow the below steps −First of all, create a data frame.Then, use scale function with subsetting to standardize selected columns.ExampleCreate the data frameLet’s create a data frame as shown below −v1
Read MoreHow to convert a data frame into two column data frame with values and column name as variable in R?
To convert a data frame into two column data frame with values and column name as variable in R, we can follow the below steps −First of all, create a data frame.Then, use stack function to convert data frame.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to extract number from string if string is in different format than normal in R data frame?
To extract number from string if string is in different format than normal in R data frame, we can follow the below steps −First of all, create a data frame.Then, use gsub function along with as.numeric function to extract the number.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to extract number from string in R data frame?
To extract number from string in R data frame, we can follow the below steps −First of all, create a data frame.Then, use gsub function to extract number from string.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read More