Paasche and Laspeyres indexes calculation provide the same results, if indexMethod is not defined

[fabiocs8]

For each instance in the code below, both Paasche and Laspeyres indexes are the same. Laspeyres is the correct one, and Paasche wrongly replicates Laspeyres values. This is because there was a typo in "indexMmethod", instead of teh correct " indexMethod".

methods <- c("paasche","laspeyres")
ind_pkg_chained <- lapply(methods, function(x) {priceIndex(CES_sigma_2,
pvar = "prices",
qvar = "quantities",
pervar = "time",
prodID = "prodID",
indexMmethod = x,
output = "chained"
)}) |> as.data.frame(col.names = methods)

So it would be advisible that if "indexMethod" is not defined (for instance, in this case it was a mispelling) that priceIndex function stop and ask for one of the existing methods.

Thank you.

[fabiocs8]

There was a typo in paramenters list: indexMmethod = x, instead of the correct indexMethod = x. Thus , it would be advisible to stop if indexMethod is not defined in arguments list

[grahamjwhite]

This was being caused by unknown argument names being caught by the dots and has now been addressed in the review-fixes branch. A check of the dots arguments will now throw an error if an unknown name gets through.

library(IndexNumR)
    methods <- c("paasche","laspeyres")
ind_pkg_chained <- lapply(methods, function(x) {priceIndex(CES_sigma_2,
                                                           pvar = "prices",
                                                           qvar = "quantities",
                                                           pervar = "time",
                                                           prodID = "prodID",
                                                           indexMmethod = x,
                                                           output = "chained"
)}) |> as.data.frame(col.names = methods)
#> Error:
#> ! Unknown argument(s) to priceIndex: indexMmethod (did you mean indexMethod?). Valid additional arguments are: measure, combine.

^{Created on 2026-09-27 with reprex v2.1.1}