Running examples in 'momr-Ex.R' failed
The error most likely occurred in:

> ### Name: momr-package
> ### Title: Mining Metaomics Data In R
> ### Aliases: momr-package momr
> ### Keywords: package shotgun metagenomics MGS MetaGenomicSpecies data
> ###   mining biomarker selection metagenomics
> 
> ### ** Examples
> 
>   
> # load the package
> library(momr)
> 
> #' all the data in the package
> # data(package="momr")
> 
> #' load the raw and frequency test dataset
> data("hs_3.3_metahit_sample_dat_raw")
> data("hs_3.3_metahit_sample_dat_freq")
> 
> 
> #' NORMALIZATION
> #' This should be performed with the whole dataset (complete catalogue). 
> #' But here is an exemple with the subset of the data for illustration purposes
> data(hs_3.3_metahit_genesize)
> norm.data <- normFreqRPKM(dat=hs_3.3_metahit_sample_dat_raw, cat=hs_3.3_metahit_genesize)
[1] "The dataset is a matrix"
> 
> 
> #' CLUSTERING OF SAMPLES
> hc.data <- hierClust(data=hs_3.3_metahit_sample_dat_freq[,1:5], side="col")
Error in namespaceExport(ns, exports) : 
  undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
Calls: hierClust ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted