Hello,

two days ago Sebastian helped me to finish in a hurry a histogram with bar()

I would like now to understand how to make the plot with hist()

First of all, my data (after a massage) looks like :

-----------------------------------------
0.00e+00   1.00e-04 81039
1.00e-04   2.00e-04 4472
2.00e-04   3.00e-04 2033
3.00e-04   4.00e-04 1155
4.00e-04   5.00e-04  823
5.00e-04   6.00e-04  643
6.00e-04   7.00e-04  534
7.00e-04   8.00e-04  361
8.00e-04   9.00e-04  313
9.00e-04   1.00e-03  269
1.00e-03   1.10e-03  230
1.10e-03   1.20e-03  195
1.20e-03   1.30e-03  178
1.30e-03   1.40e-03  165
1.40e-03   1.50e-03  175
1.50e-03   1.60e-03  125
1.60e-03   1.70e-03  109
1.70e-03   1.80e-03  112
1.80e-03   1.90e-03   90
.
.
.
.
9.86e-02   9.87e-02    0
9.87e-02   9.88e-02    0
9.88e-02   9.89e-02    0
9.89e-02   9.90e-02    0
9.90e-02   9.91e-02    0
9.91e-02   9.92e-02    0
9.92e-02   9.93e-02    0
9.93e-02   9.94e-02    0
9.94e-02   9.95e-02    0
9.95e-02   9.96e-02    1
-----------------------------------------

The bins are given by the two first number columns.

For instance, the first bin is from 0.00e+00 to 1.00e-04 and has the
number of data 81039

Then I run the following script on them:

----------------------------------------------
#!/usr/bin/env python

from pylab import *

H = load ( './histo3.dat')

h =  H[:, 2]  # the third column

n, bins, patches = hist(h, 997, normed=0, log=0,
facecolor='lightblue', alpha=0.75)

show()
----------------------------------------------

The number 997 is because this is the number of lines I have in my
file (and, thus, the number of bins)

But the plot is ranging between

0 - 90000 --> on x axis
0 - 1000   --> on y axis

Notice in the data file that x does not get further than 9.96e-02

So the maximum should be 0.0996 and I am getting 90000

Why is that?

What am I doing wrong?

I have tried to substitute lower-case e with E in the data file but
this did not help

Any help would be appreciated.

thanks,

Pau

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