# Vincenty Ellipsoid Great Circle Distance in R (Example)

In this article, Iâ€™ll show how to compute a Vincenty ellipsoid great circle distance in R.

The tutorial consists of the following content:

Letâ€™s dive right in!

## Creating Example Data

At the start, letâ€™s create some example data in R:

```my_points <- matrix(c(81.25798, 73.81277,      # Create longitude/latitude matrix
14.91254, 18.18145),
nrow = 2)
colnames(my_points) <- c("longitude", "latitude")
rownames(my_points) <- c("pt_1", "pt_2")
my_points                                      # Print longitude/latitude matrix```

Table 1 shows the structure of our exemplifying data: It consists of two longitude and latitude points.

## Example: Calculate Vincenty Ellipsoid Great Circle Distance Using distVincentyEllipsoid() Function of geosphere Package

In this example, Iâ€™ll illustrate how to calculate the Vincenty ellipsoid great circle distance in R.

For this, we first need to install and load the geosphere package:

```install.packages("geosphere")                  # Install geosphere package

Now, we can apply the distVincentyEllipsoid function of the geosphere package to calculate the Vincenty ellipsoid distance of our two geospatial points:

```my_dist <- distVincentyEllipsoid(my_points)    # Calculate Vincenty ellipsoid distance
my_dist                                        # Print Vincenty ellipsoid distance
# [1] 872988```

The geographical distance between our two data points according to the Vincenty formula is 872988.

## Video & Further Resources

I have recently published a video on my YouTube channel, which explains the contents of this tutorial. You can find the video below:

Furthermore, you might read some of the other articles of my homepage. You can find a selection of articles about distance metrics below:

To summarize: This article has shown how to calculate a Vincenty ellipsoid distance in R programming. If you have further questions and/or comments, let me know in the comments.

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• What is the default units in which we get the distance? Is it in m or km?