### Frequency Plot of Protein Sequences using R

A frequency plot is a graphical data analysis technique for summarizing the distributional information of a variable. The response variable is divided into equal sized intervals (or bins). The number of occurrences of the response variable is calculated for each bin. In this tutorial, the number of occurrences of each amino acids in the protein sequence (response variable) is calculated and sorted in ascending order. The frequency plot then consists of: Vertical Axis = Amino acids Horizontal Axis = Frequencies of the amino acids There are 4 types of frequency plots: Frequency plot (absolute counts); Relative frequency plot (convert counts to proportions); Cumulative frequency plot; Cumulative relative frequency plot. The frequency plot and the histogram have the same information except the frequency plot has lines connecting the frequency values, whereas the histogram has bars at the frequency values. Frequency plot using R In this tutorial, the programming language R and