[R] sparse distance object?

R community, I am trying to cluster large omics datasets (10,000-20,000 variables). Obviously, with datasets of this size, PC memory is an issue. I am using a custom distance metric, and am able to generate a dissimilarity matrix in sparse format. To cluster, for example, using heirarchical

[R] agrep pmatch recursive???

Hello R Helpers, Business - 64 bit windows 7, R 2.11.1 I am trying to match the character contents of one list, called 'exclude', to those of a second list, called 'dataset' dataset is a list of file names with folder locations, and looks like this when called: > dataset [1] "A/10-10-29a-