diagram.diag

blockdiag {
    orientation=portrait
    span_width=32
    span_height=32

    node_width = 95 // default value is 128
    node_height = 40 // default value is 40

    class dataset[color="#ffcc99",stacked,shape=box]
    class third_party[color="#ccf2ff",shape=box]
    class python[color="#ffff80",shape=roundedbox]
    class message[color="#ffffff",shape=roundedbox]

    group external {
        label = "External"
        color = "#ff7777"

        images[class=dataset,label="Image\ndataset"]
        xml_files[class=dataset,label="XML annotation\nfiles"]
        labelImg[class=third_party]
    }

    group my_repo {
        label = "This Repo"
        color = "#77ff77"

        generate_csv.py[class=python,height=30,width=110]
        generate_pbtxt.py[class=python,height=30,width=110]
        generate_tfrecord.py[class=python,height=30,width=110]
        generate_yolo_txt.py[class=python,height=30,width=110]
        generate_train_eval.py[class=python,height=30,width=110]

        csv[class=message,width=80,label="CSV"]
        pbtxt[class=message,width=80,label="label map"]
        tfrecord[class=message,width=80,label="TFRecord"]
        yolo_txt[class=message,width=80,label="YOLO\ntext files",stacked]
    }

    images -> labelImg -> xml_files -> generate_csv.py -> csv
    csv -> generate_pbtxt.py -> pbtxt -> generate_tfrecord.py -> tfrecord
    csv -> generate_yolo_txt.py -> yolo_txt
    csv -> generate_train_eval.py -> csv
    csv -> generate_tfrecord.py
}