Unable to enhance width of bars in a stacked barchart (plotly graph objects)

📊 Plotly Python
1

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image1200×1000 21.8 KB

Hello,
The following code produces a stacked bar-chart. However I am unable to increase the width of the bars produced. I have used the width parameter as discussed in documentation but it isn’t helping.

The code is as follows:

#python
import datetime
import plotly.graph_objects as go
from numpy import array

  def plot_barchart(title_p: str, x_label: str, y_label: str):
      barchart_fig_go = go.Figure(layout=go.Layout(plot_bgcolor='#FFFFFF'))
      barchart_fig_go.add_trace(
          go.Bar(
              name='INDEX1',
              x=array([datetime.datetime(2022, 1, 31, 0, 0),
                       datetime.datetime(2022, 2, 28, 0, 0),
                       datetime.datetime(2022, 3, 31, 0, 0),
                       datetime.datetime(2022, 4, 29, 0, 0),
                       datetime.datetime(2022, 5, 31, 0, 0),
                       datetime.datetime(2022, 6, 30, 0, 0),
                       datetime.datetime(2022, 7, 29, 0, 0),
                       datetime.datetime(2022, 8, 31, 0, 0),
                       datetime.datetime(2022, 9, 30, 0, 0),
                       datetime.datetime(2022, 10, 31, 0, 0),
                       datetime.datetime(2022, 11, 30, 0, 0),
                       datetime.datetime(2022, 12, 30, 0, 0),
                       datetime.datetime(2023, 1, 31, 0, 0),
                       datetime.datetime(2023, 2, 28, 0, 0),
                       datetime.datetime(2023, 3, 31, 0, 0),
                       datetime.datetime(2023, 4, 28, 0, 0),
                       datetime.datetime(2023, 5, 31, 0, 0),
                       datetime.datetime(2023, 6, 2, 0, 0)], dtype=object),
              y=array([-0.00348633, -0.00259967, 0.02014313, -0.00132585, -0.00307056,
                       0.00600349, -0.00106385, -0.00131315, -0.01125965, -0.00553509,
                       0.01206035, -0.00654606, 0.01196162, 0.00026996, 0.00474922,
                       0.00020395, 0.00169865, 0.00119708]),
              width=[0.8,0.8]
          )
      )
      barchart_fig_go.add_trace(
          go.Bar(
              name='INDEX2',
              x=array([datetime.datetime(2022, 1, 31, 0, 0),
                       datetime.datetime(2022, 2, 28, 0, 0),
                       datetime.datetime(2022, 3, 31, 0, 0),
                       datetime.datetime(2022, 4, 29, 0, 0),
                       datetime.datetime(2022, 5, 31, 0, 0),
                       datetime.datetime(2022, 6, 30, 0, 0),
                       datetime.datetime(2022, 7, 29, 0, 0),
                       datetime.datetime(2022, 8, 31, 0, 0),
                       datetime.datetime(2022, 9, 30, 0, 0),
                       datetime.datetime(2022, 10, 31, 0, 0),
                       datetime.datetime(2022, 11, 30, 0, 0),
                       datetime.datetime(2022, 12, 30, 0, 0),
                       datetime.datetime(2023, 1, 31, 0, 0),
                       datetime.datetime(2023, 2, 28, 0, 0),
                       datetime.datetime(2023, 3, 31, 0, 0),
                       datetime.datetime(2023, 4, 28, 0, 0),
                       datetime.datetime(2023, 5, 31, 0, 0),
                       datetime.datetime(2023, 6, 2, 0, 0)], dtype=object),
              y=array([1.21058407e-05, 1.27078335e-03, -1.91812714e-03, 1.00472469e-02,
                       3.14907763e-04, -1.98958319e-03, -8.61364898e-03, 1.54027556e-03,
                       -5.37822304e-03, -1.18758409e-02, -1.71503169e-04, 5.94205473e-03,
                       5.48899570e-03, 1.35409234e-02, -3.16090870e-03, -4.06147230e-03,
                       3.71189220e-03, 1.23621180e-03]),
              width=[0.8,0.8]
  
          )
      )
      barchart_fig_go.update_layout(
          xaxis_tickangle=-45,
          xaxis=dict(
              title=x_label
          ),
          yaxis=dict(
              title=y_label
          ),
          title=title_p,
          barmode='stack'
      )
      barchart_fig_go.update_yaxes(showline=True, linewidth=2, gridcolor='#CCCCCC')
  
      return barchart_fig_go
  
  
  
  monthly_bar = plot_barchart(
      title_p="SAMPLE CHART",
      x_label='Date',
      y_label='')
  
  monthly_bar.write_image('SAMPLE' + '_' + '_ma.png',
                          width=1200,
                          height=1000, engine='kaleido')
2

I think this is a similar issue as this one

I’m just guessing here, but it looks like using a datetime axis, plotly is reserving the space for each day in your range and therefore the bars for single days are quite narrow.

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