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Articles by Nizamuddin Siddiqui
Page 32 of 196
How to create the bar chart with ggplot2 using color brewer in R?
To create the bar chart with ggplot2 using color brewer in R, we can follow the below steps −First of all, create a data frame.Then, create the chart with default colors.After that, use scale_colour_brewer function to create the bar chart.Create the data frameLet's create a data frame as shown below −Group
Read MoreWhy mean is NaN even if na.rm is set to TRUE using dplyr in R?
If na.rm is set to TRUE using dplyr package then the output for statistical operations returns NaN. To avoid this, we need to exclude na.rm. Follow below steps to understand the difference between the tw −First of all, create a data frame.Summarise the data frame with na.rm set to TRUE if NA exists in the data frame.Summarise the data frame without setting na.rm to TRUE.Create the data frameLet's create a data frame as shown below −Group&li;-rep(c("First", "Second", "Third"), times=c(3, 10, 7)) Response&li;-rep(c(NA, 3, 4, 5, 7, 8), times=c(3, 2, 5, 2, 4, 4)) df&li;-data.frame(Group, Response) dfOn executing, the above script ...
Read MoreHow to display NA frequency for a ggplot2 graph using color brewer in R?
To display NA frequency for a ggplot2 graph using color brewer in R, we can follow the below steps −First of all, create a data frame.Then, create the chart with default colors.After that, use scale_colour_brewer function to create the bar chart and set the color of NA values bar with na.value.Create the data frameLet's create a data frame as shown below −Group
Read MoreHow to display NA group values in scatterplot created with ggplot2 using color brewer in R?
To display NA group values in scatterplot created with ggplot2 using color brewer in R, we can follow the below steps −First of all, create a data frame.Then, create the scatterplot with default colors.After that, use scale_color_brewer function to create the scatterplot with color of points (including NA) based on color palette given in scale_color_brewer.Create the data frameLet's create a data frame as shown below −x
Read MoreHow to convert ggplot2 graph into a plotly graph in R?
To convert ggplot2 graph into a plotly graph in R, we can follow the below steps −First of all, create a data frame.Then, create a ggplot2 graph and save it in an object.After that, load plotly package and create the ggplot2 graph using ggplotly function.Create the data frameLet's create a data frame as shown below −x
Read MoreHow to generate the outcome of three throws of a die in R?
When we roll a die three times, the sample space contains two hundred and sixteen outcomes that is 216. If we want to generate the outcome of three throws of a die then expand.grid function can be used with rep and list function.Generating the outcome of three throws of a dieLet's create a data frame as shown below −expand.grid(rep(list(1:6),2))On executing, the above script generates the below output(this output will vary on your system due to randomization) −OutputVar1 Var2 1 1 1 2 2 1 3 3 1 4 4 1 5 5 1 6 6 1 7 1 2 8 2 2 9 3 2 10 4 2 11 5 2 12 6 2 13 1 3 14 2 3 15 3 3 16 4 3 17 5 3 18 6 3 19 1 4 20 2 4 21 3 4 22 4 4 23 5 4 24 6 4 25 1 5 26 2 5 27 3 5 28 4 5 29 5 5 30 6 5 31 1 6 32 2 6 33 3 6 34 4 6 35 5 6 36 6 6
Read MoreHow to define the number of breaks in base R histogram?
To define the number of breaks in base R histogram, we can use breaks argument along with hist function.Create the histogram with small number of breaksUse a vector with normal distribution and the histogram of the same vector with ten breaks −x
Read MoreHow to divide data frame rows by number of columns in R?
To divide data frame rows by number of columns in R, we can follow the below steps −First of all, create a data frame.Then, use apply function to divide the data frame rows by number of columns.Create the data frameLet's create a data frame as shown below −x
Read MoreHow to convert numeric levels of a factor into string in R data frame?
To convert numeric levels of a factor into string in R data frame, we can follow the below steps −First of all, consider an in-built data set or create new one.Then, use mutate function with ifelse to create string column based numeric column representing a factor.Consider an-inbuilt data setLet’s have a look at mtcars data set in base R −data(mtcars) head(mtcars, 25)On executing, the above script generates the below output(this output will vary on your system due to randomization) −Output mpg cyl disp hp drat wt qsec vs am gear ...
Read MoreHow to convert year, month, and day of the month into a complete date in R?
To convert year, month, and day of the month into a complete date, we can follow the below steps −Create a data frame with Year, Month and DayOfMonth as separate columns.Use mutate function of dplyr package to create complete date.Create the data frameLet's create a data frame as shown below −Year
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