0
我正在试图生成一个决策树,我想要使用点可视化。得到的点文件将被转换为png。直接将决策树转换为PNG
虽然我可以使用像
export_graphviz(dectree, out_file="graph.dot")
接着在DOS命令
dot -Tps graph.dot -o outfile.ps
直接在Python DOWS做这一切的东西不起作用做在DOS下最后转换步骤,并产生一个错误
AttributeError: 'list' object has no attribute 'write_png'
这是我试过的程序代码:
from sklearn import tree
import pydot
import StringIO
# Define training and target set for the classifier
train = [[1,2,3],[2,5,1],[2,1,7]]
target = [10,20,30]
# Initialize Classifier. Random values are initialized with always the same random seed of value 0
# (allows reproducible results)
dectree = tree.DecisionTreeClassifier(random_state=0)
dectree.fit(train, target)
# Test classifier with other, unknown feature vector
test = [2,2,3]
predicted = dectree.predict(test)
dotfile = StringIO.StringIO()
tree.export_graphviz(dectree, out_file=dotfile)
graph=pydot.graph_from_dot_data(dotfile.getvalue())
graph.write_png("dtree.png")
我错过了什么?
相关岗位。 http://stackoverflow.com/questions/5316206/converting-dot-to-png-in-python – qmaruf