fix #3962
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1825c92bbc
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@ -33,7 +33,7 @@ from electrum.util import block_explorer_URL
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from electrum.util import timestamp_to_datetime, profiler
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try:
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from electrum.plot import plot_history
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from electrum.plot import plot_history, NothingToPlotException
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except:
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plot_history = None
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@ -195,11 +195,11 @@ class HistoryList(MyTreeWidget, AcceptFileDragDrop):
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_("Can't plot history.") + '\n' +
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_("Perhaps some dependencies are missing...") + " (matplotlib?)")
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return
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if len(self.transactions) > 0:
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try:
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plt = plot_history(self.transactions)
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plt.show()
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else:
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self.parent.show_message(_("Nothing to plot."))
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except NothingToPlotException as e:
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self.parent.show_message(str(e))
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@profiler
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def on_update(self):
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20
lib/plot.py
20
lib/plot.py
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@ -14,7 +14,14 @@ from matplotlib.patches import Ellipse
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from matplotlib.offsetbox import AnchoredOffsetbox, TextArea, DrawingArea, HPacker
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class NothingToPlotException(Exception):
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def __str__(self):
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return _("Nothing to plot.")
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def plot_history(history):
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if len(history) == 0:
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raise NothingToPlotException()
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hist_in = defaultdict(int)
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hist_out = defaultdict(int)
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for item in history:
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@ -42,12 +49,19 @@ def plot_history(history):
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xfmt = md.DateFormatter('%Y-%m')
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ax.xaxis.set_major_formatter(xfmt)
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width = 20
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dates, values = zip(*sorted(hist_in.items()))
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r1 = axarr[0].bar(dates, values, width, label='incoming')
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axarr[0].legend(loc='upper left')
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r1 = None
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r2 = None
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dates_values = list(zip(*sorted(hist_in.items())))
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if dates_values and len(dates_values) == 2:
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dates, values = dates_values
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r1 = axarr[0].bar(dates, values, width, label='incoming')
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axarr[0].legend(loc='upper left')
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dates_values = list(zip(*sorted(hist_out.items())))
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if dates_values and len(dates_values) == 2:
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dates, values = dates_values
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r2 = axarr[1].bar(dates, values, width, color='r', label='outgoing')
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axarr[1].legend(loc='upper left')
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if r1 is None and r2 is None:
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raise NothingToPlotException()
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return plt
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