考慮兩個資料幀df1 和df2,它們具有相同的索引,但可能具有不同的列,其中每個資料幀行代表一個類別,每列代表一個指標。目標是建立聚類堆疊條形圖,其中每個類別的條形圖分組在一起,每個資料幀的條形圖彼此堆疊。
<code class="python">import pandas as pd import matplotlib.pyplot as plt import matplotlib.cm as cm def plot_clustered_stacked(df_list, labels=None, title="Clustered Stacked Bar Plot"): n_dataframes = len(df_list) n_columns = len(df_list[0].columns) n_index = len(df_list[0].index) fig, ax = plt.subplots() # Iterate through each dataframe for i, df in enumerate(df_list): # Plot the bars for the current dataframe df.plot(kind="bar", ax=ax, linewidth=0, stacked=True, legend=False, grid=False) # Adjust the position and width of the bars for df, j in zip(df_list, range(n_dataframes)): for n, rect in enumerate(ax.patches): if rect.get_y() == 0: # Stacked bar for dataframe df rect.set_x(rect.get_x() + j / float(n_dataframes)) rect.set_width(1 / float(n_dataframes)) # Set the x-axis labels and ticks ax.set_xticks(np.arange(0, n_index) + 0.5) ax.set_xticklabels(df.index) # Add a legend for the dataframes plt.legend([df.stack(level=0).index[0] for df in df_list], labels) # Set the plot title ax.set_title(title) # Create example dataframes df1 = pd.DataFrame(np.random.rand(4, 3), index=["A", "B", "C", "D"], columns=["x", "y", "z"]) df2 = pd.DataFrame(np.random.rand(4, 3), index=["A", "B", "C", "D"], columns=["x", "y", "z"]) # Plot the clustered stacked bar plot plot_clustered_stacked([df1, df2], labels=["df1", "df2"])</code>
<code class="python">import seaborn as sns # Concatenate the dataframes into a single dataframe with a wide format df = pd.concat([df1.reset_index().melt(id_vars=["index"]), df2.reset_index().melt(id_vars=["index"])]) # Plot the clustered stacked bar plot g = sns.FacetGrid(data=df, col="variable", hue="index") g.map_dataframe(sns.barplot, order=df["index"].unique())</code>
以上是如何使用 Pandas 和 Matplotlib 或 Seaborn 建立聚類堆積長條圖?的詳細內容。更多資訊請關注PHP中文網其他相關文章!