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
Programming Articles
Page 12 of 2545
What are the types of tags involved in javascript?
Html taga) The tag is used to define a client-side script.b) The tag contains scripting statements or an external script file.JavaScript code must be keep in script tag.Let's see the use of the tag. For suppose declare the variable outside the script tag. var a = 1; var b = 2; var c = a + b; document.getElementById("tag").innerHTML = c; Output3
Read MoreHow to subset a data frame by excluding a specific text value in an R data frame?
To create a subset based on text value we can use rowSums function by defining the sums for the text equal to zero, this will help us to drop all the rows that contains that specific text value. For example, if we have a data frame df that contains A in many columns then all the rows of df excluding A can be selected as−df[rowSums(df=="A")==0, , drop=FALSE]Exampledf[rowSums(df=="E")==0, , drop=FALSE] Output x1 x2 x3 x4 x5 1 A D B C C 2 B D D D D 3 B A D D D 5 C D C C C 10 C ...
Read MoreHow to convert MANOVA data frame for two-dependent variables into a count table in R?
MANOVA refers to multivariate analysis of variance, in this method we have more than one dependent variable and multiple independent variables. We want to compare each level of the independent variable combination for each of the dependent variables. To convert MANOVA data frame for two-dependent variables into a count table, we can use cast function of reshape package but we need to melt the data frame first so that the casting can be done appropriately.ExampleID
Read MoreSort the words in lexicographical order in C#
Firstly, set a string array −string[] arr = new string[] { "Indian", "Moroccon", "American", };To sort the words in lexicographical order −var sort = from a in arr orderby a select a;Exampleusing System; using System.Linq; class Program { static void Main() { string[] arr = new string[] { "Indian", "Moroccon", "American", }; var sort = from a in arr orderby a select a; foreach(string res in sort) { Console.WriteLine(res); } } }outputAmerican Indian Moroccon
Read MoreHow to view the complete output of tibble in R?
Tibbles are created when we analyze data using dplyr package and if the data size is large then only 10 values are printed in R. If we want to display the complete output of tibble then View function needs to be used. For example, if we want to perform calculation of counts then we should add View() at the end of the code with pipe operator.Exampledf%>%group_by(Group,Rating)%>%mutate(count=n())%>%View()Output
Read MoreHow to convert a data frame row into character vector in R?
To create a character vector in R we can enclose the vector values in double quotation marks but if we want to use a data frame row values to create a character vector then as.character function can be used. For example, if we have a data frame df then the values in first row of the df can form a character vector using as.character(df[1,]).ExampleG1
Read MoreProgram to find contiguous intervals of a unique array in Python
Suppose we have a list of unique numbers called nums. We have to find a sorted 2D matrix of numbers where each list represents an inclusive interval summarizing number that are contiguous in nums.So, if the input is like nums = [10, 11, 12, 15, 16, 17, 28, 30], then the output will be [[10, 12], [15, 17], [28, 28], [30, 30]], as in the list [10 to 12], [15 to 17] are contiguous, and 28 and 30 are there, they are represented as [28 to 28] and [30 to 30].To solve this, we will follow these steps−sort the list ...
Read MoreHow to italicize boxplot label in R using ggplot2?
Like every other tool for statistical analysis R does not display the labels of a boxplot in italics, thus if we want to do this, we need to do it manually. In ggplot2, we have a function scale_x_discrete that can be used to change the default font to italic using expression function.Exampleggplot(df,aes(x,y))+geom_boxplot()+scale_x_discrete(labels=expression(italic(Female),italic(Male)))Output
Read MoreHow to change the font size of legend in base R plot?
In base R, we can use legend function to add a legend to the plot. For example, if we want to create a histogram with legend on top-right position then we can use legend("topright",legend="Normal Distribution") and if we want to change the font size then we need to as cex argument as shown below:legend("topright",legend="Normal Distribution",cex=2)Examplelegend("topleft",legend="Histogram of",cex=1.5)Output
Read MoreHow to replace missing values with median in an R data frame column?
To replace missing values with median, we can use the same trick that is used to replace missing values with mean. For example, if we have a data frame df that contain columns x and y where both of the columns contains some missing values then the missing values can be replaced with median as df$x[is.na(df$x)]
Read More