python - How can I change the x axis in matplotlib so there is no white space? -

so learning how import data , work in matplotlib , having trouble tho have exact code book.

this plot looks like, question how can there no white space between start , end of x-axis.

here code:

import csv  matplotlib import pyplot plt datetime import datetime  # dates , high temperatures file. filename = 'sitka_weather_07-2014.csv' open(filename) f:     reader = csv.reader(f)     header_row = next(reader)      #for index, column_header in enumerate(header_row):         #print(index, column_header)     dates, highs = [], []     row in reader:         current_date = datetime.strptime(row[0], "%y-%m-%d")         dates.append(current_date)          high = int(row[1])         highs.append(high)  # plot data.  fig = plt.figure(dpi=128, figsize=(10,6)) plt.plot(dates, highs, c='red')   # format plot. plt.title("daily high temperatures, july 2014", fontsize=24) plt.xlabel('', fontsize=16) fig.autofmt_xdate() plt.ylabel("temperature (f)", fontsize=16) plt.tick_params(axis='both', which='major', labelsize=16)  plt.show() 

in matplotlib 2.x there automatic margin set @ edges, ensures data nicely fitting within axis spines. in case such margin desired on y axis. default set 0.05 in units of axis span. set margin 0 on x axis, use

plt.margins(x=0) 

or

ax.margins(x=0) 

depending on context. see the documentation.

in case want rid of margin in whole script, can use

plt.rcparams['axes.xmargin'] = 0 

at beginning of script (same y of course). if want rid of margin entirely , forever, might want change according line in matplotlib rc file.

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alternatively changing margins, use plt.xlim(..) or ax.set_xlim(..) manually set limits of axes such there no white space left.

wiki