graphviz.sources.Source怎样调整图片大小
时间: 2023-02-07 14:30:15 浏览: 191
可以使用 `size` 参数来调整图片大小。例如:
```python
from graphviz import Source
source = Source('''
graph {
A -- B
}
''', format='png', size='4,4')
source.render('test-output/test-size')
```
这将生成一个 4x4 英寸的图片。
相关问题
graphviz.sources.Source at 0x1b7181719a0
`graphviz.sources.Source` is a class from the Graphviz Python library used to represent and generate source code for Graphviz graphs. It is typically used in conjunction with the `graphviz.Digraph` class to create and render graphs in various formats.
Here is an example of using `graphviz.Digraph` and `graphviz.sources.Source` to create and render a simple directed graph:
```python
from graphviz import Digraph, Source
# create a new directed graph
dot = Digraph()
# add some nodes and edges
dot.node('A')
dot.node('B')
dot.node('C')
dot.edge('A', 'B')
dot.edge('B', 'C')
# render the graph as a PNG image
dot.format = 'png'
dot.render('example')
# generate the source code for the graph
src = Source(dot.source)
# print the source code
print(src)
```
The output of the above code would be the source code for the graph in a Graphviz DOT file format. It can be used to render the graph in other formats, such as PDF or SVG, by using the `dot.render` method with the appropriate file extension.
graphviz.Source
Graphviz是一个开源的图形生成工具,它提供了一个Python接口,名为`graphviz.Source`。这个模块用于创建和处理基于DOT语言(Directed Graph Description Language)的图形数据结构。`Source`类允许开发者构建复杂的图模型,包括节点(nodes)、边(edges)以及它们之间的属性。
通过`graphviz.Source`,你可以定义一个图形的基本结构,并可以设置各种样式、布局等选项。例如,你可以创建一个有向图:
```python
from graphviz import Source
# 创建一个源实例
g = Source("""
digraph {
node [shape=rectangle];
A -> B;
B -> C;
}
""")
# 输出图形到屏幕或保存为文件
g.view() # 在支持的环境(如浏览器)中显示
g.render('my_graph', view=True) # 保存为图片并自动打开查看
```
在这个例子中,`digraph`关键字声明了这是一个有向图,`A`, `B`, 和 `C` 是节点,箭头表示边的关系。
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