hi,

i want to use the function table to build a table not of frequence (number of time the vareable is repeated in a list or a data frame!!) but in function of classes
I don t find a clear explnation in  examples of  ?table !!!

example

x      y        z
1    0       100
5    1       1500
6    1       1200 
2    2       500 
1    1       3500 
5     2     2000 
8     5     4500

i want to do a table summerizing the number of variable where z is in [0-1000],],[1000-3000], [> 3000]

thank you very much for your help


      
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