264 lines
7.8 KiB
Python
264 lines
7.8 KiB
Python
#!/usr/bin/env python3
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# author J.Beale, T.Mason
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"""
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# aim
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given a regular array of crystfel folders with different detector distances
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- naming covention = #.###/#.###.stream
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script will generate a graph analysing the detector distance as a function of the unit-cell constants
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# usage
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python update-geom-from-lab6.py <path-to-scan-folder>
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# output
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creates plots of the unit cell axis against clen
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"""
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# modules
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import pandas as pd
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import regex as re
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import os
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import numpy as np
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import matplotlib.pyplot as plt
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import sys
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from scipy.optimize import curve_fit
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from scipy.signal import peak_widths, find_peaks
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def scrub_clen( stream_pwd ):
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# get clen from stream name
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# example - /sf/cristallina/data/p20590/work/process/jhb/detector_refinement/coarse_scan/0.115/0.115.stream
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# scrub clen and return - else nan
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try:
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pattern = r"0\.\d+/(0\.\d+)\.stream"
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re_search = re.search( pattern, stream_pwd )
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clen = re_search.group( 1 )
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if AttributeError:
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return float( clen )
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except AttributeError:
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return np.nan
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def find_streams( top_dir ):
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# create df for streams
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stream_df = pd.DataFrame()
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# search for all files that end with .stream
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for path, dirs, files in os.walk( top_dir ):
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for name in files:
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if name.endswith( ".stream" ):
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# get stream pwd
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stream_pwd = os.path.join( path, name )
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# scrub clen from stream
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clen = scrub_clen( stream_pwd )
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# put clen and stream pwd into df
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data = [ { "stream_pwd" : stream_pwd,
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"clen" : clen
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} ]
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stream_df_1 = pd.DataFrame( data )
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stream_df = pd.concat( ( stream_df, stream_df_1 ) )
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# sort df based on clen
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stream_df = stream_df.sort_values( by="clen" )
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# reset df index
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stream_df = stream_df.reset_index( drop=True )
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# return df of streams and clens
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return stream_df
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def scrub_us( stream ):
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# get uc values from stream file
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# example - Cell parameters 7.71784 7.78870 3.75250 nm, 90.19135 90.77553 90.19243 deg
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# scrub clen and return - else nan
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try:
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pattern = r"Cell\sparameters\s(\d+\.\d+)\s(\d+\.\d+)\s(\d+\.\d+)\snm,\s(\d+\.\d+)\s(\d+\.\d+)\s(\d+\.\d+)\sdeg"
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cells = re.findall( pattern, stream )
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if AttributeError:
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return cells
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except AttributeError:
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return np.nan
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def find_clen_values( stats_df ):
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def find_min_clen(col_name):
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min_val = stats_df[col_name].min()
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min_row = stats_df[stats_df[col_name] == min_val]
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min_clen = min_row['clen'].values[0]
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return min_val, min_clen
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def gauss(x, *p):
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A, mu, sigma = p
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return A * np.exp(-(x-mu)**2/(2.*sigma**2))
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p0 = [ 30, 0.111, 0.01 ]
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parameters, covariance = curve_fit( gauss, stats_df.clen, stats_df.indexed, p0=p0 )
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# Get the fitted curve
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stats_df[ "gaus" ] = gauss( stats_df.clen, *parameters)
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# find peak centre
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peaks = find_peaks( stats_df.gaus.values )
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# find full peak width
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fwhm = peak_widths( stats_df.gaus.values, peaks[0], rel_height=0.5 )
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fwhm_str = int( round( fwhm[2][0], 0 ) )
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fwhm_end = int( round( fwhm[3][0], 0 ) )
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# translate width into motor values
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indexed_start = stats_df.iloc[ fwhm_str, 0 ]
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indexed_end = stats_df.iloc[ fwhm_end, 0 ]
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mid_gauss = stats_df.clen.iloc[ peaks[0] ].values[0]
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# cut df to only include indexed patterns
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stats_df = stats_df[ ( stats_df.clen < indexed_end ) & ( stats_df.clen > indexed_start ) ]
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# calculate minimum values
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min_alpha_val, min_alpha_clen = find_min_clen('std_alpha')
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min_beta_val, min_beta_clen = find_min_clen('std_beta')
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min_gamma_val, min_gamma_clen = find_min_clen('std_gamma')
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min_c_val, min_c_clen = find_min_clen('std_c')
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# find possible clens
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suggested_clen = (min_alpha_clen + min_beta_clen + min_gamma_clen )/3
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suggested_clen = round(suggested_clen, 4)
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print( "middle of indexing gaussion fit of scan = {0}".format( mid_gauss ) )
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print( "mean minimum of alpha, beta, gamma of scan = {0}".format( suggested_clen ) )
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def plot_indexed_std( stats_df, ax1, ax2 ):
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# indexed images plot
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color = "tab:red"
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ax1.set_xlabel("clen")
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ax1.set_ylabel("indexed", color=color)
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ax1.plot(stats_df.clen, stats_df.indexed, color=color)
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ax1.tick_params(axis="y", labelcolor=color)
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# label color
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color = "tab:blue"
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ax2.set_ylabel("a,b,c st.deviation", color=color)
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ax2.tick_params(axis='y', labelcolor=color)
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# std_a plot
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color = "turquoise"
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ax2.plot(stats_df.clen, stats_df.std_a, color=color, label="a" )
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# std_b plot
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color = "deepskyblue"
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ax2.plot(stats_df.clen, stats_df.std_b, color=color, label="b" )
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# std_c plot
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color = "royalblue"
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ax2.plot(stats_df.clen, stats_df.std_c, color=color, label="c" )
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def plot_indexed_std_alpha_beta_gamma( stats_df, ax1, ax2 ):
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# indexed images plot
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color = "tab:red"
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ax1.set_xlabel("clen")
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ax1.set_ylabel("indexed", color=color)
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ax1.plot(stats_df.clen, stats_df.indexed, color=color)
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ax1.tick_params(axis="y", labelcolor=color)
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# label color
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color = "tab:green"
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ax2.set_ylabel("alpha, beta, gamma st.deviation", color=color)
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ax2.tick_params(axis='y', labelcolor=color)
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# std_alpha plot
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color = "yellow"
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ax2.plot(stats_df.clen, stats_df.std_alpha, color=color, label="alpha" )
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# std_beta plot
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color = "green"
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ax2.plot(stats_df.clen, stats_df.std_beta, color=color, label="beta" )
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# std_gamma plot
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color = "darkolivegreen"
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ax2.plot(stats_df.clen, stats_df.std_gamma, color=color, label="gamma" )
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def main( top_dir ):
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# find stream files from process directory
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print( "finding stream files" )
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stream_df = find_streams( top_dir )
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print( "done" )
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# making results df for unit cell and index no.
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stats_df = pd.DataFrame()
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# loop through stream files and collect unit_cell information
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print( "looping through stream files to collect unit cell, indexed information" )
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for index, row in stream_df.iterrows():
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stream_pwd, clen = row[ "stream_pwd" ], row[ "clen" ]
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# open stream file
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stream = open( stream_pwd, "r" ).read()
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# scrub unit cell information
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cells = scrub_us( stream )
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# put cells in df
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cols = [ "a", "b", "c", "alpha", "beta", "gamma" ]
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cells_df = pd.DataFrame( cells, columns=cols )
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cells_df = cells_df.astype( float )
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# calc stats
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indexed = len( cells_df )
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std_a = cells_df.a.std()
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std_b = cells_df.b.std()
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std_c = cells_df.c.std()
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std_alpha = cells_df.alpha.std()
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std_beta = cells_df.beta.std()
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std_gamma = cells_df.gamma.std()
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# put stats in results df
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stats = [ { "clen" : clen,
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"indexed" : indexed,
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"std_a" : std_a,
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"std_b" : std_b,
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"std_c" : std_c,
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"std_alpha" : std_alpha,
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"std_beta" : std_beta,
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"std_gamma" : std_gamma,
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} ]
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stats_df_1 = pd.DataFrame( stats )
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stats_df = pd.concat( ( stats_df, stats_df_1 ) )
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print( "done" )
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# reset index
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stats_df = stats_df.reset_index( drop=True )
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#print clen for minimum alpha, beta, and gamma values
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find_clen_values(stats_df)
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# plot results
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fig, (ax1, ax3) = plt.subplots(1, 2)
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ax2 = ax1.twinx()
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ax4 = ax3.twinx()
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plot_indexed_std(stats_df, ax1, ax2)
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plot_indexed_std_alpha_beta_gamma(stats_df, ax3, ax4)
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fig.legend(loc="upper center")
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fig.tight_layout()
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plt.show()
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if __name__ == "__main__":
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stream_pwd = sys.argv[1]
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main( stream_pwd )
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