Re: bug in raw_frequency()?

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Davy said...

When running this code, the value of 0 in the data_set isn't counted - 

include std/stats.e 
sequence t, s = {}, data_set = {0,1,2,3,4,5,6,7,8,9} 
	  
for j = 1 to 1000 do 
    s &= data_set[rand(10)] 
end for 
 
t = raw_frequency(s, ST_ALLNUM) 
? t

t is -

{ {108,8}, {106,5}, {104,1}, {103,3}, {102,2}, {100,4}, {97,6}, {90,9}, {84,7} }

But if I change the 0 to 10 in data_set, the correct number of values (with their frequencies) are output.

Yes this is a bug. As a workaround, change one line in the function found in stats.e.

Change the line ... 

	lKeys   = repeat(0, length(data_set))

to ... 

	lKeys   = repeat({}, length(data_set))
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