mirror of
https://github.com/triqs/dft_tools
synced 2024-10-31 19:23:45 +01:00
76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
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################################################################################
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#
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# TRIQS: a Toolbox for Research in Interacting Quantum Systems
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#
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# Copyright (C) 2011 by M. Ferrero, O. Parcollet
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#
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# TRIQS is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# TRIQS. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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import numpy
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def clip_array(x_array, x_min, x_max):
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"""
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Given:
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- x_array a 1d numpy array of shape (L), of ordered values
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or in fact any generator of ordered values.
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- x_min, x_max
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it returns the slice sl such that
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* x_array[sl] is in [x_min, x_max]
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"""
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assert x_max >= x_min, "Windowing error"
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try:
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low = (i for i,x in enumerate(x_array) if not( x < x_min) ).next()
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except StopIteration:
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return slice(0,0) # there is no x >= x_min
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try:
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high = (i for i,x in enumerate(x_array) if x > x_max ).next()
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r = slice(low,high)
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except StopIteration:
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r = slice(low,len(x_array)) # there is no x > x_max
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return r
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def plot_protocol_apply(ob, opt_dict, xlims):
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"""
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Given an object ob that supports the plot protocol, it applies the protocol
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or emulate it
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"""
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if hasattr(ob, '_plot_'): return ob._plot_(opt_dict)
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elif callable(ob):
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n_points = opt_dict.pop('n_points',100)
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rx = opt_dict.pop('x_window', None)
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xmin, xmax = rx if rx else xlims()
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X = numpy.arange(xmin,xmax, (xmax- xmin)/float(n_points))
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Y = numpy.array( [ob(x) for x in X] )
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else:
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try: # generator x,y
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X, Y = izip (*ob)
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except:
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raise RuntimeError, "Object can not be plotted"
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name = opt_dict.pop('name','')
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if not name: name = str(ob)
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if numpy.iscomplexobj(Y):
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return( [ {'type': "XY", 'xdata':X, 'ydata':Y.real, 'label': "Re " + name} ,
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{'type': "XY", 'xdata':X, 'ydata':Y.imag, 'label': "Im " + name} ] )
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else:
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return( [ {'type': "XY", 'xdata':X, 'ydata':Y, 'label': name} ] )
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