GSI Object Oriented Online Offline (Go4)
GO4-6.4.0
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python
go4py
convert.py
Go to the documentation of this file.
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2
import
ROOT
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from
array
import
array
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def
list2hist
(xs, ys, name="anonymous", title=""):
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"""
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Create a ROOT.TH1I with xs as bins (low edges) and ys as their content
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name and title will be used for the new histogram
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"""
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h = ROOT.TH1I(name, title, len(xs), array(
'd'
, xs))
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for
i, y
in
enumerate(ys):
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h.SetBinContent(i+1, y)
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return
h
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def
hist2list
(h):
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"""
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Read points from histogram h into two lists (x and y coordinates)
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Format is chosen such that matplotlib.pyplot.step() can be used for plotting
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hence (x, y) == (low edges, contents)
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"""
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tmp = ((h.GetBinLowEdge(i+1), h.GetBinContent(i+1))
for
i
in
range(h.GetNbinsX()))
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return
zip(*tmp)
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def
eval_func
(xs, tf):
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"""
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Evaluate the TF1 tf for all values in xs, return list of y values
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"""
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return
[tf.Eval(x)
for
x
in
xs]
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go4py.convert.hist2list
hist2list(h)
Definition
convert.py:17
go4py.convert.list2hist
list2hist(xs, ys, name="anonymous", title="")
Definition
convert.py:6
go4py.convert.eval_func
eval_func(xs, tf)
Definition
convert.py:28
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