Programming Articles - Page 919 of 3363

The error invalid xlim value occurs when we incorrectly provide the xlim values, these values are not used in sequence, we just need to provide first and the last value. For Example, if we want to create a point chart of 1 to 5 with xlim having values between -5 to 15 then we can use the command as follows −plot(1:5, xlim=c(-5:15))ExampleAdd the following code to the above command −plot(1:10) OutputIf you execute the above given command, it generates the following Output −Add the following code to the above snippet −plot(1:10) plot(1:10, xlim=c(-15:15)) Error in plot.window(...) : invalid 'xlim' value ... Read More

To create histogram for discrete column in an R data frame, we can use geom_bar function of ggplot2 package and set the width to 1 also passing same column for x and y in aes.For example, if we have a data frame called df that contains a discrete column say x then the histogram for data in x can be created by using the below given command −ggplot(df,aes(x,x))+geom_bar(stat="identity",width=1)ExampleFollowing snippet creates a sample data frame −x

We are given with a string ‘str’ of any given length. The task is to rearrange the characters in such a manner that there will be maximum substrings that will be a palindrome string without adding or removing a character from the given input string. Palindrome string is the one in which the characters are arranged in such a manner that they pronounce the same from start and last.Let us see various input output scenarios for this −Input − string str = "itnin"Output − Rearrangement of the string to maximize the number of palindromic substrings is: iinnt.Explanation − We are given a string ... Read More

We are given an integer type number, let's say, number. The task is to rearrange number digit’s in such a manner that a number formed after rearrangement is also divisible by the given number i.e. ’number’.Let us see various input output scenarios for this −Input − int number = 100035Output − Rearrangement of a number which is also divisible by it is: 300105Explanation − we are given an integer number as ‘number’ i.e. 100035. Now, the task is to rearrange these given digits in such a manner that the formed number will be divisible by 100035. So, after rearranging the digits we got ... Read More

To create a new column with ratio of two columns based on a condition in an R data frame, we can use division sign with ifelse function.For example, if we have a data frame called df that contains two columns say X and Y and we want to create a new column with ratio of X and Y based on a condition that X is greater than 5 then we can use the below given command −df$Ratio_X_Y5,X/Y,NA))Example 1Following snippet creates a sample data frame −x1

To extract string vector elements up to a fixed number of characters in R, we can use substring function of base R.For Example, if we have a vector of strings say X that contains 100 string values and we want to find the first five character of each value then we can use the command as given below −substring(X,1,5)Example 1Following snippet creates a sample data frame −x1

To display X-axis tick marks as minimum and maximum only without their values using plotly, we can use layout function of plot_ly package where we can pass the values for minimum and maximum using xaxis argument and the text using ticktext argument as shown in the below example.ExampleFollowing snippet creates a sample data frame −x

We are given with a string ‘str’ of any given length. The task is to rearrange the characters in such a manner that the output will be a palindrome string without adding or removing a character from the given input string. Palindrome string is the one in which the characters are arranged in such a manner that they pronounce the same from start and last.Let us see various input output scenarios for this −Input − string str = "itnin"Output − Rearrangement of characters to form palindrome if possible is: nitinExplanation − We are given a string type variable let’s say, str. Now we ... Read More

We are given an integer type array containing both positive and negative numbers, let's say, arr[] of any given size. The task is to rearrange an array in such a manner that when the lowest element in an array is odd then elements of an array will be rearranged in odd first and even second manner. When the lowest element in an array is even then elements of an array will be rearranged in even first and odd second manner and if the number of even/odd elements is more than the number of odd/even elements then it will place the ... Read More

If we have a string vector that contains more than one element then there might exists some common values in all the elements. If we want to find those values then intersect function can be used along strsplit function and Reduce function.Check out the below Examples to understand how it can be done.Example 1>x1=c("Data science is an interdisciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from structured and unstructured data, and apply knowledge and actionable insights from data across a broad range of application domains.", "Data science is the domain of study that ... Read More