Pandas - How to repeat axvline through each graph












2















New to pandas/python and trying to figure out how to get a repeating line throughout all of my graphs to pin point and exact location, my code is working and I have the line showing for one therefore I would imagine I need to loop through all of them, but I simply don't know how to do it.



Code is following:



crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
fig3.index = pd.DatetimeIndex(fig2.index)
fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
plt.axvline(x = ['2016-01'], color='red',linestyle='--');


Graph is the following:
Graphs










share|improve this question





























    2















    New to pandas/python and trying to figure out how to get a repeating line throughout all of my graphs to pin point and exact location, my code is working and I have the line showing for one therefore I would imagine I need to loop through all of them, but I simply don't know how to do it.



    Code is following:



    crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
    crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
    fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
    fig3.index = pd.DatetimeIndex(fig2.index)
    fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
    plt.axvline(x = ['2016-01'], color='red',linestyle='--');


    Graph is the following:
    Graphs










    share|improve this question



























      2












      2








      2








      New to pandas/python and trying to figure out how to get a repeating line throughout all of my graphs to pin point and exact location, my code is working and I have the line showing for one therefore I would imagine I need to loop through all of them, but I simply don't know how to do it.



      Code is following:



      crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
      crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
      fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
      fig3.index = pd.DatetimeIndex(fig2.index)
      fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
      plt.axvline(x = ['2016-01'], color='red',linestyle='--');


      Graph is the following:
      Graphs










      share|improve this question
















      New to pandas/python and trying to figure out how to get a repeating line throughout all of my graphs to pin point and exact location, my code is working and I have the line showing for one therefore I would imagine I need to loop through all of them, but I simply don't know how to do it.



      Code is following:



      crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
      crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
      fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
      fig3.index = pd.DatetimeIndex(fig2.index)
      fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
      plt.axvline(x = ['2016-01'], color='red',linestyle='--');


      Graph is the following:
      Graphs







      python pandas matplotlib






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 23 '18 at 13:36









      Mr. T

      4,18791535




      4,18791535










      asked Nov 23 '18 at 13:26









      Stuart AllenStuart Allen

      132




      132
























          1 Answer
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          0














          The DataFrame.plot() method returns as its first argument a numpy array of all the matplotlib subplot axes in the resulting figure.



          Solution: save the axis array, loop through it, and call ax.axvline() on each subplot.



          # Unchanged lines from your example
          crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
          crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
          fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
          fig3.index = pd.DatetimeIndex(fig2.index)

          # Modified lines below
          axarr = fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
          for ax in axarr.flat:
          ax.axvline(x = ['2016-01'], color='red',linestyle='--');





          share|improve this answer


























          • Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

            – Stuart Allen
            Nov 23 '18 at 14:02








          • 1





            You need to flatten axarr, i.e. for ax in axarr.flat:

            – DavidG
            Nov 23 '18 at 14:06











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          The DataFrame.plot() method returns as its first argument a numpy array of all the matplotlib subplot axes in the resulting figure.



          Solution: save the axis array, loop through it, and call ax.axvline() on each subplot.



          # Unchanged lines from your example
          crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
          crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
          fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
          fig3.index = pd.DatetimeIndex(fig2.index)

          # Modified lines below
          axarr = fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
          for ax in axarr.flat:
          ax.axvline(x = ['2016-01'], color='red',linestyle='--');





          share|improve this answer


























          • Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

            – Stuart Allen
            Nov 23 '18 at 14:02








          • 1





            You need to flatten axarr, i.e. for ax in axarr.flat:

            – DavidG
            Nov 23 '18 at 14:06
















          0














          The DataFrame.plot() method returns as its first argument a numpy array of all the matplotlib subplot axes in the resulting figure.



          Solution: save the axis array, loop through it, and call ax.axvline() on each subplot.



          # Unchanged lines from your example
          crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
          crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
          fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
          fig3.index = pd.DatetimeIndex(fig2.index)

          # Modified lines below
          axarr = fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
          for ax in axarr.flat:
          ax.axvline(x = ['2016-01'], color='red',linestyle='--');





          share|improve this answer


























          • Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

            – Stuart Allen
            Nov 23 '18 at 14:02








          • 1





            You need to flatten axarr, i.e. for ax in axarr.flat:

            – DavidG
            Nov 23 '18 at 14:06














          0












          0








          0







          The DataFrame.plot() method returns as its first argument a numpy array of all the matplotlib subplot axes in the resulting figure.



          Solution: save the axis array, loop through it, and call ax.axvline() on each subplot.



          # Unchanged lines from your example
          crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
          crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
          fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
          fig3.index = pd.DatetimeIndex(fig2.index)

          # Modified lines below
          axarr = fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
          for ax in axarr.flat:
          ax.axvline(x = ['2016-01'], color='red',linestyle='--');





          share|improve this answer















          The DataFrame.plot() method returns as its first argument a numpy array of all the matplotlib subplot axes in the resulting figure.



          Solution: save the axis array, loop through it, and call ax.axvline() on each subplot.



          # Unchanged lines from your example
          crimeDataBelfastMonthByType = crimeData[['Ward Name','Month']]
          crimeDataBelfastMonthByType = pd.DataFrame({'count' : crimeDataBelfastMonthByType.groupby([ "Ward Name", "Month"] ).size()}).reset_index()
          fig3 = pd.pivot_table(crimeDataBelfastMonthByType, values='count', index=['Month'], columns=['Ward Name'], fill_value=0)
          fig3.index = pd.DatetimeIndex(fig2.index)

          # Modified lines below
          axarr = fig3.plot(figsize=(30, 30), subplots=True, layout=(-1, 6), sharex=False, sharey=False);
          for ax in axarr.flat:
          ax.axvline(x = ['2016-01'], color='red',linestyle='--');






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 23 '18 at 14:17









          DavidG

          11k103242




          11k103242










          answered Nov 23 '18 at 13:54









          Peter LeimbiglerPeter Leimbigler

          4,0431415




          4,0431415













          • Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

            – Stuart Allen
            Nov 23 '18 at 14:02








          • 1





            You need to flatten axarr, i.e. for ax in axarr.flat:

            – DavidG
            Nov 23 '18 at 14:06



















          • Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

            – Stuart Allen
            Nov 23 '18 at 14:02








          • 1





            You need to flatten axarr, i.e. for ax in axarr.flat:

            – DavidG
            Nov 23 '18 at 14:06

















          Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

          – Stuart Allen
          Nov 23 '18 at 14:02







          Hey there, thank you so much for replying but I still seem to be getting an error: AttributeError: 'numpy.ndarray' object has no attribute 'axvline'

          – Stuart Allen
          Nov 23 '18 at 14:02






          1




          1





          You need to flatten axarr, i.e. for ax in axarr.flat:

          – DavidG
          Nov 23 '18 at 14:06





          You need to flatten axarr, i.e. for ax in axarr.flat:

          – DavidG
          Nov 23 '18 at 14:06




















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