#encoding=utf8
 import matplotlib
 from matplotlib.font_manager import FontProperties
 import pylab
 import sys
 # (name, MJ/kg, MJ/L, [label-adjustments])
 data = (
 #    ('Kernspaltung (U-235, rein)', 88.25e6, 1.5e9),
    ('TNT', 4610, 6.92),
    (u'Wasserstoff (flüssig)', 143, 10.1, {'halign': 'left', 'valign': 'center'}),
    ('Wasserstoff (700 bar)', 143, 5.6, {'halign': 'left', 'valign': 'center'}),
    ('Wasserstoff', 143, 0.01079, {'valign': 'top'}),
   # ('Beryllium', 67.6, 125.1),
   # ('Lithiumborhydrid', 65.2, 43.4),
   # ('Bor', 58.9, 137.8),
    ('Methan', 55.6, 0.0378),
    ('Erdgas (200 bar)', 53.6, 10),
   # (u'Propan (flüssig)', 49.6, 25.3),
   # (u'Butane (flüssig)', 49.1, 27.7),
    ('Benzin', 46.4, 34.2), #{'halign': 'left', 'valign': 'center'}),
    ('Diesel', 46.2, 37.3, {'valign': 'top'}),
   # ('Polyethylen', 46.3, 42.6),
   # ('Polypropylen', 46.4, 41.7),
   # ('Gasohol E10', 43.54, 33.72),
   # ('Gasohol E85', 33.1, 25.65),
   # ('Lithium', 43.1, 23.0),
   # ('Kerosin', 42.8, 33),
   # ('Biodiesel', 42.20, 33),
   # ('DMF (2,5-Dimethylfuran)', 42, 37.8),
    (u'Rohöl', 46.3, 37, {'halign': 'left', 'valign': 'center'}),
   # ('Polystyrol', 41.4, 43.5),
   # ('Fettstoffwechsel', 38, 35),
   # ('Butanol', 36.6, 29.2),
    ('Graphit', 32.7, 72.9),
   # ('Anthrazit', 32.5, 72.4),   # ('Silizium', 32.2, 75.1),
    ('Aluminium', 31.0, 83.8, {'valign': 'center', 'halign': 'left'}),
    ('Ethanol', 30, 24),
   # ('Polyester', 26.0, 35.6),
   # ('Magnesium', 24.7, 43.0),
   # ('Bitumen', 24, 20),
    ('Methanol', 19.7, 15.6),
   # ('Hydrazin', 19.5, 19.3),
   # (u'Ammoniak (flüssig)', 18.6, 11.5),
    ('PVC', 18.0, 25.2),
   # ('Zuckerstoffwechsel', 17, 26.2),
   # ('Calcium', 15.9, 24.6),
   # ('Glukose', 15.55, 23.9),
  #  ('Natrium (NaOH)', 13.3, 12.8), #  (burned to wet NaOH)
    ('Natrium', 9.1, 8.8),
    ('Zink', 5.3, 38.0),
    ('Teflon', 5.1, 11.2),
    ('Eisen', 5.2, 40.68, {'valign':'top'}), # (burned to Fe2O3)
  #  ('Eisen (FeO)', 4.9, 38.2),
    # 0.54-0.72, 0.9-1.9 (values used are from the Li-Ion battery article)
    ('Alkali-Mangan-Batterie', 0.59, 1.43),
    ('Zink-Luft-Batterie', 1.59, 6.02),
    ('Lithium-Ionen-Akku', 0.576, 0.972),
    ('NiMH Akku', 0.4, 1.55, {'valign': 'top'}),
    (u'Blei-Säure-Akku', 0.14, 0.36),
    ('Druckluft (300 bar, isotherm)', 0.47, 0.17),
 )
 font12 = FontProperties(family=['sans-serif'], size=12)
 font10 = FontProperties(family=['sans-serif'], size=10)
 font8 = FontProperties(family=['sans-serif'], size=8)
 pylab.rcParams.update({'figure.figsize': [12, 7.5]})
 fig=pylab.figure(1)
 fig.figurePatch.set_alpha(0.0)
 ax.set_xscale('log')
 ax.set_yscale('log')
 for v in data:
    # (name, MJ/kg, MJ/L, label-adjustments)
    label = v[0]
    x = v[1]
    y = v[2]
    if len(v) < 4:
        halign = 'center'
        valign = 'bottom'
        x_text = x
        y_text = y * 0.7
    else:
        halign = v[3].get('halign', 'center')
        valign = v[3].get('valign', 'bottom')
        x_text = x + v[3].get('x', 0)
        y_text = y + v[3].get('y', 0)
        if valign == 'bottom':
            y_text *= 0.7
        elif valign == 'top':
            y_text *= 1.4
        if halign == 'left':
            x_text *= 1.2
    pylab.scatter(x=[x], y=[y])
    pylab.text(x=x_text, y=y_text, s=label,
               horizontalalignment=halign,
               verticalalignment=valign)
              # fontproperties=font10)
 pylab.title('Energiedichte')#, fontproperties=font12)
 pylab.ylabel('MJ / l')#, fontproperties=font10)
 pylab.xlabel('MJ / kg')#, fontproperties=font10)
 ax.xaxis.grid(True)
 ax.yaxis.grid(True)
 #pylab.xlim(0, 160)
 #pylab.ylim(0, 90)
 #pylab.show()
 pylab.savefig('energy_density.png')