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Programming Articles
Page 1111 of 2547
How to return a logical value for a t test based on 0.05 level of significance in R?
To return a logical value for a t test based on 0.05 level of significance in R, we can follow the below steps −First of all, create a data frame with one column.Apply t.test function with ifelse to return logical value based on 0.05 level of significance.Example1Create the data frameLet's create a data frame as shown below −x
Read MoreTiming features in Node.js
The timer module in Node.js consists of different functions that can control and alter the timings of code execution. In this article, we will see how to use some of these functions.setTimeout() MethodThe setTimeout() method schedules the code execution after a designated amount of milliseconds. Only after the timeout has occurred, the code will be executed. The specified function will be executed only once. This method returns an ID that can be used in clearTimeout() method.SyntaxsetTimeout(function, delay, [args])ParametersThe parameters are defined below:function − This parameter takes input for the function that will be executed.delay − This is the time duration after which ...
Read MoreNode.js – util.inspect() method
The util.inspect() method returns the string representation of the objects that are intended for the debugging process.Syntaxutil.inspect(object, [showHidden], [depth], [colors])ParametersThe parameters are defined as below:object − A JavaScript primitive type or an object is given as input.optionsshowHidden − This is set as false by default. If true, this option includes the non-enumerable symbols and properties that are included in the formatted result. WeakMap and WeakSet are also included.depth − It specifies the number of recursions to be applied while formatting objects.colors − The output is set styled with ANSI color codes if this value is set to true. Colors passed are customizable.customInspect − The ...
Read MoreNode.js – util.inherits() Method
The util.inherits() method basically inherits the methods from one construct to another. This prototype will be set to a new object to that from the superConstructor.By doing this, we can mainly add some validations to the top of Object.setPrototypeOf(constructor.prototype, superConstructor.prototype).Syntaxutil.inherits(constructor, superConstructor)ParametersThe parameters are described below -constructor − This is a function type input that holds the prototype for constructor the user wants to be inherited.superConstructor − This is the function that will be used for adding and validating the input validations.Example 1Create a file "inherits.js" and copy the following code snippet. After creating the file, use the command "node inherits.js" to run ...
Read MoreHow to create a scatterplot with low intensity of points using ggplot2 in R?
To create a scatterplot with low intensity of points using ggplot2, we can follow the below steps −First of all, create a data frame.Then, create the scatterplot.Create the scatterplot with scale_color_hue function for low intensity of points.Create the data frameLet's create a data frame as shown below −x
Read MoreNode.js – hmac.digest() Method
The Hmac class is one of the many utility classes that is used for creating the cryptographic HMAC digests. The Hmac.digest() method is used for calculating all the data that is updated using the Hmac.update() method. If encoding is provided, a string will be returned, else a buffer is returned.Syntaxhmac.digest( [encoding] )Parametersencoding − This input parameter takes input for the encoding to be considered while calculating hmac.Example 1Create a file "hmacDigest.js" and copy the following code snippet. After creating the file use, use the command "node hmacDigest.js" to run this code.// Hmac.digest() Demo Example // Importing the crypto module const ...
Read MoreHow to create a scatterplot with dark points using ggplot2 in R?
To create a scatterplot with low intensity of points using ggplot2, we can follow the below steps −First of all, create a data frame.Then, create the scatterplot.Create the scatterplot with scale_color_hue function for dark points.Create the data frameLet's create a data frame as shown below −x
Read MoreHow to display regression slope using model in a plot created by ggplot2 in R?
To display regression slope using model in a plot created by ggplot2, we can follow the below steps −First of all, create the data frame.Use annotate function of ggplot2 to create the scatterplot with regression slope displayed on the plot.Check the regression slope.Create the data frameLet's create a data frame as shown below −x
Read MoreHow to display two equal signs in R using ggplot2?
To display two equal signs using ggplot2, we can follow the below steps −First of all, create a data frame.Create a scatterplot(you can create any other plot).Display two equal signs using annotate functionCreate the data frameLet's create a data frame as shown below −x
Read MoreHow to create facetted scatterplot with scale of X-axis based on the numerical values corresponding to grouping column in R?
To create facetted scatterplot with scale of X-axis based on the numerical values corresponding to grouping column in R, we can follow the below steps −First of all, create a data frame having at least one grouping column and two numerical columns.Create the facetted scatterplot based on the grouping column.Create the facetted scatterplot based on grouping column with X-axis scale based on corresponding values in numerical columns.Create the data frameLet's create a data frame as shown below −x
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