I am trying to plot a histogram.the first one is a actual data. when i try to vary number of bins, 0.5(y=0.0),1.5(y=0.0),2.5(y=0.0)(x positions) gets invalid data.how can i find those invalid data bins.

1)bin width :1 min -0 max-10 number of bins :10 -valid data
x y bin
0.000000 0.000000 - 0
1.000000 1.000000-1
2.000000 2.000000-2
3.000000 3.000000-3

2)bin width :0.5 min -0;max ;10 number of bins : 20

x y bin
0.000000 0.000000 -0
0.500000 0.000000 -1
1.000000 1.000000-2
1.500000 0.000000 -3
2.000000 2.000000-4
2.500000 0.000000 -5
3.000000 3.000000 -6

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Hi, what is function of these codes?? I dont know about histogram but I wanna learn about it :D












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Ahmed NoerPecinta Janda

The numbers you print are only numbers. They can not be valid or invalid.

What do you expect to get?
How do you compute bin value?
Do you create unintended overlaps?