Hello, 
I  have a problem to treat my data. I seek the orders being able to treat 
under  sampling: I have X samples divided into 10. How to take, in a random 
way, 
under  sample from the 1st sample, and in addition, one under sample of the 
2nd sample,  and so on to X to calculate the average taxonomic richness of the  
selection. 
Then  I would like to know how to renew the experiment by taking this time 2, 
3... X  under samples at the same time, always in a random way.  
Thank you in advance for your answer. 
Manue.

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