Python 创建保存png按钮到ipywidgets
我有一个函数可以将我的分类树显示为IPyWidget,如下所示:Python 创建保存png按钮到ipywidgets,python,tree,ipywidgets,Python,Tree,Ipywidgets,我有一个函数可以将我的分类树显示为IPyWidget,如下所示: labels = X.columns #functions to create and fit the decision tree def plot_tree(criterion, depth, split, min_split, min_leaf=0.2): #create tree clf = DecisionTreeClassifier(criterion = criterion, max_depth =
labels = X.columns
#functions to create and fit the decision tree
def plot_tree(criterion, depth, split, min_split, min_leaf=0.2):
#create tree
clf = DecisionTreeClassifier(criterion = criterion, max_depth = depth,
splitter = split, min_samples_split=min_split, min_samples_leaf=min_leaf)
clf.fit(X, y)
#create graph
graph = Source(tree.export_graphviz(clf, out_file=None, feature_names=labels, filled=True))
display(SVG(graph.pipe(format='svg')))
return clf
#create buttons for interactive graph
inter = interactive(plot_tree, criterion=["gini", "entropy"], depth=np.arange(1, 12),
split = ["best", "random"], min_split=(0.1,1), min_leaf=(0.1,0.5))
display(inter)
还有一种将树保存为png的方法:
png_bytes = graph.pipe(format='png')
with open('../graph/tree.png','wb') as f:
f.write(png_bytes)
Image(png_bytes);
问题是,如果我将save part作为函数放在“def plot_tree”之后,我将得到png作为第一个显示,树的深度只有1。如果我在另一个单元格中添加保存部分,我将保存整个树
我想向小部件添加一个按钮,该按钮将保存显示树,并显示所有参数集。我该怎么做呢?你试过把它放在
绘图树中吗?
?是的。。。这是第一种情况。在plot_tree内部,它只保存树的第一个深度,因为它是ipywidgets加载的第一个视图