Correlation matrix

Arguments:

• cor.method: Change correlation method. Can be "spearman" or "pearson". Default cor.method="spearman"
• size: Change size of text. Default size=1
• log.transform: Choose to make all numeric columns log transformed. Can be TRUE or FALSE. Default log.transform=FALSE.
• group: Choose to color scatterplot by a categorical variable. Put categorical variable name inside quotes. Defalt group=NULL

Example:

custom_cormatrix(iris, cor.method="spearman", size=0.5, log.transform=FALSE, group ="Species")