Python中matplotlib默认绘制的条形图比较胖？如何设置成体型匀称的条形图，达到最佳的可视化效果。

Posted 2021-10-15 Data+Science+Insight

Python中matplotlib默认绘制的条形图比较胖？如何设置成体型匀称的条形图，达到最佳的可视化效果。

#默认情形下的条形图

n_bars = len(x_labels)
    xval = np.arange(n_bars)
    colors = [\'r\', \'g\', \'b\', \'orange\', \'black\',\'purple\']
    # plot diabetes results
    plt.figure(figsize=(8, 5))
    ax1 = plt.subplot(111)
    for j in xval:
        ax1.bar(j, auc_mean_list[j], yerr=auc_std_list[j],
                 color=\'dodgerblue\', alpha=0.6, align=\'center\')
    for index,data in enumerate(auc_mean_list):
        ax1.text(x =index-0.1,y = data-0.15, s=f"{round(data,2)}" , fontdict=dict(fontsize=10))
    
    ax1.set_title(\'trainset cross-validation AUC result\')
    ax1.set_xticklabels(x_labels)
    ax1.set_xlabel(\'Models\')
    ax1.set_ylabel(\'AUC\')
    ax1.set_xticks(xval)
    plt.savefig("trainset_cross-validation_AUC.jpeg")