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POTypeError: 'float' object is not subscriptable When trying to make a histogram in matplotlib
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copied!<p>When I try and run the following code </p> <pre><code>import matplotlib.pyplot as plt import math import numpy as np from numpy.random import normal masses = [] f = open( 'myfile.txt','r') f.readline() for line in f: if line != ' ': line = line.strip() # Strips end of line character columns = line.split() # Splits into coloumn mass = columns[8] # Column which contains mass values mass = float(mass) masses.append(mass) mass = math.log10(mass) #print(mass) #gaussian_numbers = #normal(size=1000) plt.hist(mass, bins = 50, normed = True) plt.title("Gaussian Histogram") plt.xlabel("Value") plt.ylabel("Frequency") plt.show() </code></pre> <p>I get this error </p> <pre><code>Traceback (most recent call last): File "C:\Documents and Settings\Khary\My Documents\Python\HALOMASS_READER_PLOTTER.py", line 23, in <module> plt.hist(mass, bins = 50, normed = True) File "C:\Python32\lib\site-packages\matplotlib\pyplot.py", line 2191, in hist ret = ax.hist(x, bins, range, normed, weights, cumulative, bottom, histtype, align, orientation, rwidth, log, color, label, **kwargs) File "C:\Python32\lib\site-packages\matplotlib\axes.py", line 7606, in hist if isinstance(x, np.ndarray) or not iterable(x[0]): TypeError: 'float' object is not subscriptable </code></pre> <p>Can one not use floats when doing histograms or am I missing something else? Any and all help would be appreciated.</p>

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