plot_importance图片

调整plot_importance图片大小，保存图片，解决savefig(）打开图片空白的情况

代码如下

fig, ax = pyplot.subplots(figsize=(12,18))

plot_importance(model, max_num_features=85, height=0.4,ax=ax)

pyplot.savefig("FeatureImpotance1.jpg")

pyplot.show()