graphviz和dot绘制流程图

graphviz和dot绘制流程图

step1:下载graphviz，https://graphviz.org/download/
step2：安装，记得添加环境变量
step3：验证是否安装成功 dot --version

C:\Users\wangrusheng>dot --version
dot - graphviz version 12.2.1 (20241206.2353)

step4：开始写流程图代码，保存在本地
C:\Users\wangrusheng\Downloads\flow.dot

digraph {
    rankdir="LR";

    graph [fontname="helvetica", fontsize=12];
    node [fontname="helvetica", fontsize=10];
    edge [fontname="helvetica", fontsize=10];

    start [shape="plaintext", style="rounded", label="I want to extract\nmembers from a zip file."];
    
    fewlarge [shape="box", label="Do you have a few\nlarge files zip files\nwith tens\nof thousands\nof members?"];
    manysmall [shape="box", label="Do you have\nmany small files\nwith a few\ndozen members?"];
    extractsome [shape="box", label="Do you need\nto extract many\nmembers but\nnot all?"];

    end [shape="plaintext", style="rounded", label="Use vanilla unzip."];
    unzippa [shape="plaintext", style="rounded", label="Maybe unzippa is faster."];

    {
        rank=same; start; fewlarge; manysmall; end;
    }
    {
        rank=same; extractsome; unzippa;
    }

    start -> fewlarge;
    fewlarge -> manysmall[label="No"];
    fewlarge -> extractsome[label="Yes"];
    manysmall -> end[label="No"];
    manysmall -> extractsome[label="Yes"];
    extractsome -> end[label="No"];
    extractsome -> unzippa[label="Yes"];
}

step5：用命令行，生成图片

Microsoft Windows [版本 10.0.26100.3915]
(c) Microsoft Corporation。保留所有权利。

C:\Users\wangrusheng>dot --version
dot - graphviz version 12.2.1 (20241206.2353)

C:\Users\wangrusheng>dot -Tpng "C:\Users\wangrusheng\Downloads\flow.dot" -o "C:\Users\wangrusheng\Downloads\flow.png"

C:\Users\wangrusheng>

step6：去对应目录打开图片，就能看到效果
end