by Suf | May 20, 2022 | Programming, R, Tips
To perform element-by-element multiplication between two matrices X and Y, you must use the * operator as follows: X * Y If you want to perform matrix multiplication between two matrices X and Y, you must use the %*% operator as follows: X * Y This tutorial will go...
by Suf | May 16, 2022 | Programming, R, Tips
The Jaccard similarity compares two sets of data to determine how similar they are. The value of the Jaccard similarity can be between 0 and 1, where the close the number is to 1 the more similar the two sets of data are. This tutorial will go through how to calculate...
by Suf | May 15, 2022 | Programming, R, Tips
This tutorial will go through how to calculate the cosine similarity in R for vectors and matrices with code examples. Table of contentsWhat is Cosine Similarity?Visual Description of Cosine SimilarityCosine Similarity Between Two Vectors in RCosine Similarity of a...
by Suf | May 13, 2022 | Programming, R, Tips
This tutorial will go through counting the number of missing values or NAs in a data frame in R. Table of contentsExampleGet Airquality DataSolution #1: Use summarySolution #2: Use sum and is.naSolution #3: Use sum and is.na in FunctionSummary Example Let’s look...
by Suf | May 10, 2022 | Programming, R, Tips
This error occurs when you try to create a scatter plot using data frames instead of a pair of vectors. To solve this error, you can extract vectors from columns using a comma when subsetting the data frame or using the $ operator followed by the column names. This...
by Suf | May 9, 2022 | Programming, R, Tips
This error occurs when you try to create a line plot using ggplot2 but the x-variable is non-numeric, for example, factor or character. You can solve this error by using group=1 as an argument in the ggplot() function call, otherwise, you can coerce your x-variable to...
