Maximum size of the data set and computation speed
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In ECOM 2.1 new array handling technology enables the analysis of very large data sets.
Theoretically, the size of the input data matrix is unlimited although, in practice, the memory resources of the PC is usually the limiting factor. In tests we have run ECOM with a data array of 5000 species x 5000 samples without difficulty.
Our new approach to data handling means that on a reasonably modern PC, most of the computation, even on very large data sets, can be completed within a few seconds. All computations with data sets of up to 100 samples by 100 species are usually almost instantaneous.
If you do run into speed problems with very large data sets, it will generally be improved if there are no other Windows applications running at the time.