I am working on a data for which i want to correlogram plots. And i am using corrgram package for that. I have two data frames which i want to plot. So for That i am using merge function to combine both frames and then cor function for correlation matrix. I am having too many NA values and i tried different ways to remove it but not able to do so. Please guide with the same.
difficult to help you without any code that you are using. The cor function has a parameter use which you can set to "complete.obs" or "pairwise.complete.obs" - maybe that can work for you.
This is what i used. Also after running this it shows a following warning message:
In cor(MERGED, method = "pearson", use = "complete.obs") :
the standard deviation is zero
"The standard deviation is zero" sounds like you have at least one variable that is constant (that is the same value across the whole column). If a variable has no variation it cannot have co-variation and hence correlation. Non-random quantities do not (co)vary.