filter barplot large VCF

hello everyone, I am doing in Rstudio the large VCF sorting DP by loci using dp = extract.gt (vcf, element="DP", as.numeric = TRUE)
dploc = apply (dp, 1, sum)
barplot (sort (dploc), las = 3, main = "DP", col = 1:12). How can I save the selected square of data in a separate dataframe, so that later on this data I can make a filter and a graph by GQ?