Some body explains portpos attribute for oreination (connection) between/among nodes

[clayms]

https://graphviz.org/docs/attr-types/portPos/

[ncamit]

This I knows but during usage i found difficulties. For example I have node A , B, C , D , E, F,G etc. i WANT TO CONNECT THIS WAY

On Sun, Apr 24, 2022 at 11:27 AM clayms @.***> wrote:

https://graphviz.org/docs/attr-types/portPos/

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-- Amit Nihalchandani.

[clayms]

If you want to connect it radially like that you will have to use a different layout engine like circo and twopi.

See code examples below.

circo

from diagrams import Diagram, Cluster, Edge, Node

graph_attr = {
    "layout":"circo",
    "fontsize": "24",
    "compound": "true",
    "splines":"spline",
}

node_attr = {
    "shape": "circle",
    "style": "filled",
    "color": "grey",
    "fontsize":"24",
    "labelloc":"c",
}

with Diagram("circo layout", show=False, graph_attr=graph_attr) as diag:
    a = Node("a", fillcolor="red", **node_attr)

    for idx in range(2,5):
        exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="green", **node_attr)')

    for idx in range(5,23):
        exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="orange", **node_attr)')

    a >> [b, c, d]
    b >> [e, f, g, h, i, j]
    c >> [k, l, m, n, o, p]
    d >> [q, r, s, t, u, v]

diag

twopi:

from diagrams import Diagram, Cluster, Edge, Node

graph_attr = {
    "layout":"twopi",
    "fontsize": "24",
    "compound": "true",
    "splines":"spline",
    "ranksep":"3",
}

node_attr = {
    "shape": "circle",
    "style": "filled",
    "color": "grey",
    "fontsize":"24",
    "labelloc":"c",
}

with Diagram("\ntwopi layout", show=False, graph_attr=graph_attr) as diag:
    a = Node("a", fillcolor="red", **node_attr)

    for idx in range(2,5):
        exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="green", **node_attr)')

    for idx in range(5,23):
        exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="orange", **node_attr)')

    a >> [b, c, d]
    b >> [e, f, g, h, i, j]
    c >> [k, l, m, n, o, p]
    d >> [q, r, s, t, u, v]

diag

[ncamit]

I want to connect interconnections among nodes thats absolute position is set by x y coordinates and node has the feature that any port can be assigned to to it for interconnection. My block diagram is generated from excel table as input

On Sun, Apr 24, 2022, 5:55 PM clayms @.***> wrote:

If you want to connect it radially like that you will have to use a different layout engine like circo and twopi.

See code examples below.

circo

from diagrams import Diagram, Cluster, Edge, Node

graph_attr = { "layout":"circo", "fontsize": "24", "compound": "true", "splines":"spline", } node_attr = { "shape": "circle", "style": "filled", "color": "grey", "fontsize":"24", "labelloc":"c", }

with Diagram("circo layout", show=False, graph_attr=graph_attr) as diag: a = Node("a", fillcolor="red", **node_attr)

for idx in range(2,5):
    exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="green", **node_attr)')

for idx in range(5,23):
    exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="orange", **node_attr)')

a >> [b, c, d]
b >> [e, f, g, h, i, j]
c >> [k, l, m, n, o, p]
d >> [q, r, s, t, u, v]

diag

[image: image] https://user-images.githubusercontent.com/12793783/164976320-b4db4883-8e26-4db7-a486-6e31b4c52765.png

twopi:

from diagrams import Diagram, Cluster, Edge, Node

graph_attr = { "layout":"twopi", "fontsize": "24", "compound": "true", "splines":"spline", "ranksep":"3", } node_attr = { "shape": "circle", "style": "filled", "color": "grey", "fontsize":"24", "labelloc":"c", }

with Diagram("\ntwopi layout", show=False, graph_attr=graph_attr) as diag: a = Node("a", fillcolor="red", **node_attr)

for idx in range(2,5):
    exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="green", **node_attr)')

for idx in range(5,23):
    exec(f'{chr(96+idx)} = Node("{chr(96+idx)}", fillcolor="orange", **node_attr)')

a >> [b, c, d]
b >> [e, f, g, h, i, j]
c >> [k, l, m, n, o, p]
d >> [q, r, s, t, u, v]

diag

[image: image] https://user-images.githubusercontent.com/12793783/164976375-9c28d8b7-bd50-40e3-bdbd-aedc514cbd2c.png

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[clayms]

@ncamit You'll have to show your code.