Nizamuddin Siddiqui has Published 2307 Articles

How to check if values in a column of an R data frame are increasingly ordered or not?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 07:17:00

196 Views

The values are increasingly ordered if the first value is less than the second, the second is less than the third, the third is less than the fourth, the fourth is less than the fifth, and so on. In base R, we have a function called is.unsorted that can help ... Read More

How to find the union of three vectors in R?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 07:14:01

664 Views

The union function in base R helps us to find the union of two vectors but if we have three vectors then the union cannot be directly created. For this purpose, we need to use union function twice. For example, if we have three vectors defined as x, y, and ... Read More

How to display the curve on the histogram using ggplot2 in R?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 05:21:30

3K+ Views

Mostly, we use histogram to understand the distribution of a variable but if we have an overlay line on the histogram that will make the chart smoother, thus understanding the variation will become easy. To display the curve on the histogram using ggplot2, we can make use of geom_density function ... Read More

How to create a bar chart using plotly in R?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 05:19:13

294 Views

Plotly in R is a package specifically designed to create highly-interactive and publication-quality charts. The chart can be created by using plot_ly function of the package and there are three main arguments of plot_ly defined as x, y, and type, where x refers to the X-axis, y refers to the ... Read More

How to create a covariance matrix in R?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 05:15:11

547 Views

To create a covariance matrix, we first need to find the correlation matrix and a vector of standard deviations is also required. The correlation matrix can be found by using cor function with matrix object. For example, if we have matrix M then the correlation matrix can be found as ... Read More

Why scale_fill_manual does not fill the bar with colors created by using ggplot2 in R?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 19-Nov-2020 05:05:40

2K+ Views

We can manually fill the color of bars in a bar plot which is created by using ggplot2 but for this we would be needing color aesthetics already used for the bars. That means we need to use filling of bars inside aes of ggplot2 and then the colors can ... Read More

How to determine if C# .NET Core is installed?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 07-Nov-2020 12:22:15

2K+ Views

The following options are for dotnet by itself. For example, dotnet −−info. They print out information about the environment if not installed it will throw error.−−infoPrints out detailed information about a .NET Core installation and the machine environment, such as the current operating system, and commit SHA of the .NET ... Read More

How to resize an Image C#?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 07-Nov-2020 12:14:52

476 Views

A bitmap consists of the pixel data for a graphics image and its attributes. There are many standard formats for saving a bitmap to a file. GDI+ supports the following file formats: BMP, GIF, EXIF, JPG, PNG and TIFF. You can create images from files, streams, and other sources by ... Read More

How can I limit Parallel.ForEach in C#?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 07-Nov-2020 12:12:44

1K+ Views

Parallel ForeachParallel.ForEach loop in C# runs upon multiple threads and processing takes place in a parallel way. Parallel.ForEach loop is not a basic feature of C# and it is available from C# 4.0 and above To use Parallel.ForEach loop we need to import System.Threading.Tasks namespace in using directive.ForeachForeach loop in ... Read More

What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time in C#?

Nizamuddin Siddiqui

Nizamuddin Siddiqui

Updated on 07-Nov-2020 12:04:17

4K+ Views

DateTimeDateTime is a structure of value Type like int, double etc. It is available in System namespace and present in mscorlib.dll assembly.It implements interfaces like IComparable, IFormattable, IConvertible, ISerializable, IComparable, IEquatable.DateTime contains properties like Day, Month, Year, Hour, Minute, Second, DayOfWeek and others in a DateTime object.TimeSpanTimeSpan struct represents a ... Read More

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