Error : Command returned non-zero exit status 3221225477

1

Hi all,

The graph sometimes renders but mostly fails with the above error code and I am not sure why.

I am using the Graphviz Python API.
https://graphviz.readthedocs.io/en/stable/api.html

The version of Graphviz is 12.0.0.

The purpose is to move the every single node such that the node layers align at the top and not the center.

G = Digraph (
    graph_attr = {
        "rankdir":"BT",
        "splines":"ortho",
        "nodesep" : "1",
        "ranksep" : "1",
        "pad" : "3",
        "margin" : "0"
    },
    node_attr = {
        "shape":"plaintext",
        "margin" : "1,1",
        "fontsize": "3",
        "pin": "true",
        "fixedsize":"true",
        "shape":"rect"
    },
    engine="neato"
)

for n in g.nodes:
    x1 = n._bbox[0].x/1000
    x2 = n._bbox[1].x/1000
    y1 = n._bbox[0].y/1000
    y2 = n._bbox[1].y/1000
    width = x2 - x1
    height = y2 - y1

    pos[n.name] = "%.3f, %.3f!"%((x1+(width/2))*72, (-y1)*72)

    # This line below often fails
    # pos[n.name] = "%.3f, %.3f!"%((x1+(width/2))*72, (-y1-(height/2))*72)

    G.node(
        n.name,
        n.name,
        width = "%.3f"%width,
        height = "%.3f"%height,
        pos = pos[n.name]
    )

for e in g.edges:
    G.edge(e.start, e.end)

G.format = "svg"
G.filename = "%s.dot"%str(uuid4())
G.render(neato_no_op=1, directory = directory)

From:

test-82054ba5-6b76-4004-9f45-91a1627123c4
test-82054ba5-6b76-4004-9f45-91a1627123c41688×1332 78.4 KB

This is the output for the above.

digraph {
	graph [margin=0 nodesep=1 pad=3 rankdir=BT ranksep=1 splines=ortho]
	node [fixedsize=true fontsize=3 margin="1,1" pin=true shape=rect]
	0 [label=0 height=0.075 pos="170.586, -514.620!" width=0.365]
	1 [label=1 height=0.270 pos="100.602, -455.760!" width=0.364]
	2 [label=2 height=0.270 pos="138.510, -455.760!" width=0.364]
	3 [label=3 height=0.270 pos="214.326, -455.760!" width=0.364]
	4 [label=4 height=0.270 pos="290.142, -455.760!" width=0.364]
	5 [label=5 height=0.270 pos="328.050, -455.760!" width=0.365]
	6 [label=6 height=0.270 pos="365.958, -455.760!" width=0.364]
	7 [label=7 height=0.270 pos="403.866, -455.760!" width=0.365]
	8 [label=8 height=0.270 pos="62.694, -455.760!" width=0.364]
	9 [label=9 height=0.270 pos="24.786, -455.760!" width=0.364]
	10 [label=10 height=0.270 pos="252.234, -455.760!" width=0.365]
	11 [label=11 height=0.270 pos="176.418, -455.760!" width=0.365]
	12 [label=12 height=0.105 pos="142.884, -488.700!" width=0.162]
	13 [label=13 height=0.105 pos="166.212, -488.700!" width=0.162]
	14 [label=14 height=0.105 pos="212.868, -488.700!" width=0.162]
	15 [label=15 height=0.105 pos="259.524, -488.700!" width=0.162]
	16 [label=16 height=0.105 pos="282.852, -488.700!" width=0.162]
	17 [label=17 height=0.105 pos="306.180, -488.700!" width=0.162]
	18 [label=18 height=0.105 pos="329.508, -488.700!" width=0.162]
	19 [label=19 height=0.105 pos="119.556, -488.700!" width=0.162]
	20 [label=20 height=0.105 pos="96.228, -488.700!" width=0.162]
	21 [label=21 height=0.105 pos="236.196, -488.700!" width=0.162]
	22 [label=22 height=0.105 pos="189.540, -488.700!" width=0.162]
	23 [label=23 height=0.420 pos="231.822, -527.040!" width=1.013]
	24 [label=24 height=0.300 pos="406.782, -378.000!" width=0.364]
	25 [label=25 height=0.300 pos="444.690, -378.000!" width=0.365]
	26 [label=26 height=0.270 pos="427.194, -305.640!" width=0.364]
	27 [label=27 height=0.285 pos="389.286, -306.180!" width=0.365]
	28 [label=28 height=0.270 pos="503.010, -305.640!" width=0.364]
	29 [label=29 height=0.285 pos="351.378, -306.180!" width=0.364]
	30 [label=30 height=0.270 pos="465.102, -305.640!" width=0.365]
	31 [label=31 height=0.165 pos="344.088, -414.180!" width=0.162]
	32 [label=32 height=0.165 pos="367.416, -414.180!" width=0.162]
	33 [label=33 height=0.165 pos="390.744, -414.180!" width=0.162]
	34 [label=34 height=0.165 pos="460.728, -414.180!" width=0.162]
	35 [label=35 height=0.165 pos="437.400, -414.180!" width=0.162]
	36 [label=36 height=0.165 pos="484.056, -414.180!" width=0.162]
	37 [label=37 height=0.165 pos="507.384, -414.180!" width=0.162]
	38 [label=38 height=0.165 pos="414.072, -414.180!" width=0.162]
	39 [label=39 height=0.165 pos="402.408, -341.820!" width=0.162]
	40 [label=40 height=0.105 pos="449.064, -339.660!" width=0.162]
	41 [label=41 height=0.165 pos="472.392, -341.820!" width=0.162]
	42 [label=42 height=0.105 pos="379.080, -339.660!" width=0.162]
	43 [label=43 height=0.165 pos="425.736, -341.820!" width=0.162]
	44 [label=44 height=0.285 pos="351.378, -162.540!" width=0.364]
	45 [label=45 height=0.285 pos="465.102, -162.540!" width=0.365]
	46 [label=46 height=0.285 pos="427.194, -162.540!" width=0.364]
	47 [label=47 height=0.285 pos="389.286, -162.540!" width=0.365]
	48 [label=48 height=0.270 pos="503.010, -162.000!" width=0.364]
	49 [label=49 height=0.270 pos="389.286, -228.960!" width=0.365]
	50 [label=50 height=0.270 pos="427.194, -228.960!" width=0.364]
	51 [label=51 height=0.270 pos="465.102, -228.960!" width=0.365]
	52 [label=52 height=0.105 pos="379.080, -196.020!" width=0.162]
	53 [label=53 height=0.105 pos="449.064, -196.020!" width=0.162]
	54 [label=54 height=0.105 pos="425.736, -196.020!" width=0.162]
	55 [label=55 height=0.105 pos="402.408, -196.020!" width=0.162]
	56 [label=56 height=0.105 pos="472.392, -196.020!" width=0.162]
	57 [label=57 height=0.165 pos="390.744, -264.060!" width=0.162]
	58 [label=58 height=0.165 pos="414.072, -264.060!" width=0.162]
	59 [label=59 height=0.165 pos="437.400, -264.060!" width=0.162]
	60 [label=60 height=0.165 pos="460.728, -264.060!" width=0.162]
	61 [label=61 height=0.270 pos="351.378, -85.320!" width=0.364]
	62 [label=62 height=0.270 pos="465.102, -85.320!" width=0.365]
	63 [label=63 height=0.270 pos="427.194, -85.320!" width=0.364]
	64 [label=64 height=0.270 pos="503.010, -85.320!" width=0.364]
	65 [label=65 height=0.270 pos="389.286, -85.320!" width=0.365]
	66 [label=66 height=0.165 pos="351.378, -18.900!" width=0.364]
	67 [label=67 height=0.165 pos="465.102, -18.900!" width=0.365]
	68 [label=68 height=0.165 pos="427.194, -18.900!" width=0.364]
	69 [label=69 height=0.165 pos="389.286, -18.900!" width=0.365]
	70 [label=70 height=0.165 pos="503.010, -18.900!" width=0.364]
	71 [label=71 height=0.165 pos="379.080, -120.420!" width=0.162]
	72 [label=72 height=0.165 pos="449.064, -120.420!" width=0.162]
	73 [label=73 height=0.165 pos="425.736, -120.420!" width=0.162]
	74 [label=74 height=0.165 pos="472.392, -120.420!" width=0.162]
	75 [label=75 height=0.165 pos="402.408, -120.420!" width=0.162]
	76 [label=76 height=0.165 pos="379.080, -50.220!" width=0.162]
	77 [label=77 height=0.165 pos="449.064, -50.220!" width=0.162]
	78 [label=78 height=0.165 pos="425.736, -50.220!" width=0.162]
	79 [label=79 height=0.165 pos="402.408, -50.220!" width=0.162]
	80 [label=80 height=0.165 pos="472.392, -50.220!" width=0.162]
	81 [label=81 height=0.075 pos="599.238, -514.620!" width=0.365]
	82 [label=82 height=0.270 pos="794.610, -455.760!" width=0.365]
	83 [label=83 height=0.270 pos="756.702, -455.760!" width=0.364]
	84 [label=84 height=0.270 pos="642.978, -455.760!" width=0.365]
	85 [label=85 height=0.270 pos="491.346, -455.760!" width=0.364]
	86 [label=86 height=0.270 pos="453.438, -455.760!" width=0.365]
	87 [label=87 height=0.270 pos="529.254, -455.760!" width=0.365]
	88 [label=88 height=0.270 pos="567.162, -455.760!" width=0.364]
	89 [label=89 height=0.270 pos="605.070, -455.760!" width=0.364]
	90 [label=90 height=0.270 pos="718.794, -455.760!" width=0.364]
	91 [label=91 height=0.270 pos="832.518, -455.760!" width=0.364]
	92 [label=92 height=0.270 pos="680.886, -455.760!" width=0.364]
	93 [label=93 height=0.105 pos="734.832, -488.700!" width=0.162]
	94 [label=94 height=0.105 pos="711.504, -488.700!" width=0.162]
	95 [label=95 height=0.105 pos="641.520, -488.700!" width=0.162]
	96 [label=96 height=0.105 pos="548.208, -488.700!" width=0.162]
	97 [label=97 height=0.105 pos="524.880, -488.700!" width=0.162]
	98 [label=98 height=0.105 pos="571.536, -488.700!" width=0.162]
	99 [label=99 height=0.105 pos="594.864, -488.700!" width=0.162]
	100 [label=100 height=0.105 pos="618.192, -488.700!" width=0.162]
	101 [label=101 height=0.105 pos="688.176, -488.700!" width=0.162]
	102 [label=102 height=0.105 pos="758.160, -488.700!" width=0.162]
	103 [label=103 height=0.105 pos="664.848, -488.700!" width=0.162]
	104 [label=104 height=0.420 pos="660.474, -527.040!" width=1.013]
	105 [label=105 height=0.165 pos="427.194, -574.020!" width=1.985]
	44 -> 71
	71 -> 61
	45 -> 72
	72 -> 62
	46 -> 73
	73 -> 63
	48 -> 74
	74 -> 64
	47 -> 75
	75 -> 65
	61 -> 76
	76 -> 66
	62 -> 77
	77 -> 67
	63 -> 78
	78 -> 68
	65 -> 79
	79 -> 69
	64 -> 80
	80 -> 70
	49 -> 52
	52 -> 44
	50 -> 53
	53 -> 45
	50 -> 54
	54 -> 46
	50 -> 55
	55 -> 47
	51 -> 56
	56 -> 48
	11 -> 57
	57 -> 49
	29 -> 58
	58 -> 49
	27 -> 59
	59 -> 50
	27 -> 60
	60 -> 51
	4 -> 31
	31 -> 24
	5 -> 32
	32 -> 24
	86 -> 33
	33 -> 24
	85 -> 34
	34 -> 24
	7 -> 35
	35 -> 25
	87 -> 36
	36 -> 25
	88 -> 37
	37 -> 25
	6 -> 38
	38 -> 25
	24 -> 39
	39 -> 26
	25 -> 40
	40 -> 27
	25 -> 41
	41 -> 28
	24 -> 42
	42 -> 29
	24 -> 43
	43 -> 30
	0 -> 12
	12 -> 1
	0 -> 13
	13 -> 2
	0 -> 14
	14 -> 3
	0 -> 15
	15 -> 4
	0 -> 16
	16 -> 5
	0 -> 17
	17 -> 6
	0 -> 18
	18 -> 7
	0 -> 19
	19 -> 8
	0 -> 20
	20 -> 9
	0 -> 21
	21 -> 10
	0 -> 22
	22 -> 11
	81 -> 93
	93 -> 82
	81 -> 94
	94 -> 83
	81 -> 95
	95 -> 84
	81 -> 96
	96 -> 85
	81 -> 97
	97 -> 86
	81 -> 98
	98 -> 87
	81 -> 99
	99 -> 88
	81 -> 100
	100 -> 89
	81 -> 101
	101 -> 90
	81 -> 102
	102 -> 91
	81 -> 103
	103 -> 92
}

To:

test-408009e9-f9e6-4ce4-a51e-1754bdae2e99.dot
test-408009e9-f9e6-4ce4-a51e-1754bdae2e99.dot1688×1332 74.4 KB

This is the output for the above.

digraph {
	graph [margin=0 nodesep=1 pad=3 rankdir=BT ranksep=1 splines=ortho]
	node [fixedsize=true fontsize=3 margin="1,1" pin=true shape=rect]
	0 [label=0 height=0.300 pos="406.782, -367.200!" width=0.364]
	1 [label=1 height=0.300 pos="444.690, -367.200!" width=0.365]
	2 [label=2 height=0.270 pos="389.286, -295.920!" width=0.365]
	3 [label=3 height=0.285 pos="503.010, -295.920!" width=0.364]
	4 [label=4 height=0.270 pos="427.194, -295.920!" width=0.364]
	5 [label=5 height=0.285 pos="465.102, -295.920!" width=0.365]
	6 [label=6 height=0.270 pos="351.378, -295.920!" width=0.364]
	7 [label=7 height=0.165 pos="390.744, -408.240!" width=0.162]
	8 [label=8 height=0.165 pos="344.088, -408.240!" width=0.162]
	9 [label=9 height=0.165 pos="367.416, -408.240!" width=0.162]
	10 [label=10 height=0.165 pos="414.072, -408.240!" width=0.162]
	11 [label=11 height=0.165 pos="460.728, -408.240!" width=0.162]
	12 [label=12 height=0.165 pos="484.056, -408.240!" width=0.162]
	13 [label=13 height=0.165 pos="507.384, -408.240!" width=0.162]
	14 [label=14 height=0.165 pos="437.400, -408.240!" width=0.162]
	15 [label=15 height=0.165 pos="402.408, -335.880!" width=0.162]
	16 [label=16 height=0.105 pos="472.392, -335.880!" width=0.162]
	17 [label=17 height=0.165 pos="425.736, -335.880!" width=0.162]
	18 [label=18 height=0.105 pos="449.064, -335.880!" width=0.162]
	19 [label=19 height=0.165 pos="379.080, -335.880!" width=0.162]
	20 [label=20 height=0.270 pos="389.286, -75.600!" width=0.365]
	21 [label=21 height=0.270 pos="427.194, -75.600!" width=0.364]
	22 [label=22 height=0.270 pos="503.010, -75.600!" width=0.364]
	23 [label=23 height=0.270 pos="351.378, -75.600!" width=0.364]
	24 [label=24 height=0.270 pos="465.102, -75.600!" width=0.365]
	25 [label=25 height=0.165 pos="389.286, -12.960!" width=0.365]
	26 [label=26 height=0.165 pos="427.194, -12.960!" width=0.364]
	27 [label=27 height=0.165 pos="503.010, -12.960!" width=0.364]
	28 [label=28 height=0.165 pos="465.102, -12.960!" width=0.365]
	29 [label=29 height=0.165 pos="351.378, -12.960!" width=0.364]
	30 [label=30 height=0.165 pos="402.408, -114.480!" width=0.162]
	31 [label=31 height=0.165 pos="425.736, -114.480!" width=0.162]
	32 [label=32 height=0.165 pos="472.392, -114.480!" width=0.162]
	33 [label=33 height=0.165 pos="379.080, -114.480!" width=0.162]
	34 [label=34 height=0.165 pos="449.064, -114.480!" width=0.162]
	35 [label=35 height=0.165 pos="402.408, -44.280!" width=0.162]
	36 [label=36 height=0.165 pos="425.736, -44.280!" width=0.162]
	37 [label=37 height=0.165 pos="472.392, -44.280!" width=0.162]
	38 [label=38 height=0.165 pos="449.064, -44.280!" width=0.162]
	39 [label=39 height=0.165 pos="379.080, -44.280!" width=0.162]
	40 [label=40 height=0.075 pos="599.238, -511.920!" width=0.365]
	41 [label=41 height=0.270 pos="832.518, -446.040!" width=0.364]
	42 [label=42 height=0.270 pos="642.978, -446.040!" width=0.365]
	43 [label=43 height=0.270 pos="794.610, -446.040!" width=0.365]
	44 [label=44 height=0.270 pos="491.346, -446.040!" width=0.364]
	45 [label=45 height=0.270 pos="453.438, -446.040!" width=0.365]
	46 [label=46 height=0.270 pos="567.162, -446.040!" width=0.364]
	47 [label=47 height=0.270 pos="529.254, -446.040!" width=0.365]
	48 [label=48 height=0.270 pos="756.702, -446.040!" width=0.364]
	49 [label=49 height=0.270 pos="680.886, -446.040!" width=0.364]
	50 [label=50 height=0.270 pos="718.794, -446.040!" width=0.364]
	51 [label=51 height=0.270 pos="605.070, -446.040!" width=0.364]
	52 [label=52 height=0.105 pos="758.160, -484.920!" width=0.162]
	53 [label=53 height=0.105 pos="641.520, -484.920!" width=0.162]
	54 [label=54 height=0.105 pos="734.832, -484.920!" width=0.162]
	55 [label=55 height=0.105 pos="548.208, -484.920!" width=0.162]
	56 [label=56 height=0.105 pos="524.880, -484.920!" width=0.162]
	57 [label=57 height=0.105 pos="594.864, -484.920!" width=0.162]
	58 [label=58 height=0.105 pos="571.536, -484.920!" width=0.162]
	59 [label=59 height=0.105 pos="711.504, -484.920!" width=0.162]
	60 [label=60 height=0.105 pos="664.848, -484.920!" width=0.162]
	61 [label=61 height=0.105 pos="688.176, -484.920!" width=0.162]
	62 [label=62 height=0.105 pos="618.192, -484.920!" width=0.162]
	63 [label=63 height=0.420 pos="660.474, -511.920!" width=1.013]
	64 [label=64 height=0.075 pos="170.586, -511.920!" width=0.365]
	65 [label=65 height=0.270 pos="24.786, -446.040!" width=0.364]
	66 [label=66 height=0.270 pos="138.510, -446.040!" width=0.364]
	67 [label=67 height=0.270 pos="62.694, -446.040!" width=0.364]
	68 [label=68 height=0.270 pos="328.050, -446.040!" width=0.365]
	69 [label=69 height=0.270 pos="290.142, -446.040!" width=0.364]
	70 [label=70 height=0.270 pos="403.866, -446.040!" width=0.365]
	71 [label=71 height=0.270 pos="365.958, -446.040!" width=0.364]
	72 [label=72 height=0.270 pos="176.418, -446.040!" width=0.365]
	73 [label=73 height=0.270 pos="252.234, -446.040!" width=0.365]
	74 [label=74 height=0.270 pos="100.602, -446.040!" width=0.364]
	75 [label=75 height=0.270 pos="214.326, -446.040!" width=0.364]
	76 [label=76 height=0.105 pos="96.228, -484.920!" width=0.162]
	77 [label=77 height=0.105 pos="166.212, -484.920!" width=0.162]
	78 [label=78 height=0.105 pos="119.556, -484.920!" width=0.162]
	79 [label=79 height=0.105 pos="282.852, -484.920!" width=0.162]
	80 [label=80 height=0.105 pos="259.524, -484.920!" width=0.162]
	81 [label=81 height=0.105 pos="329.508, -484.920!" width=0.162]
	82 [label=82 height=0.105 pos="306.180, -484.920!" width=0.162]
	83 [label=83 height=0.105 pos="189.540, -484.920!" width=0.162]
	84 [label=84 height=0.105 pos="236.196, -484.920!" width=0.162]
	85 [label=85 height=0.105 pos="142.884, -484.920!" width=0.162]
	86 [label=86 height=0.105 pos="212.868, -484.920!" width=0.162]
	87 [label=87 height=0.420 pos="231.822, -511.920!" width=1.013]
	88 [label=88 height=0.285 pos="389.286, -152.280!" width=0.365]
	89 [label=89 height=0.285 pos="427.194, -152.280!" width=0.364]
	90 [label=90 height=0.285 pos="503.010, -152.280!" width=0.364]
	91 [label=91 height=0.285 pos="465.102, -152.280!" width=0.365]
	92 [label=92 height=0.270 pos="351.378, -152.280!" width=0.364]
	93 [label=93 height=0.270 pos="427.194, -219.240!" width=0.364]
	94 [label=94 height=0.270 pos="465.102, -219.240!" width=0.365]
	95 [label=95 height=0.270 pos="389.286, -219.240!" width=0.365]
	96 [label=96 height=0.105 pos="402.408, -192.240!" width=0.162]
	97 [label=97 height=0.105 pos="425.736, -192.240!" width=0.162]
	98 [label=98 height=0.105 pos="472.392, -192.240!" width=0.162]
	99 [label=99 height=0.105 pos="449.064, -192.240!" width=0.162]
	100 [label=100 height=0.105 pos="379.080, -192.240!" width=0.162]
	101 [label=101 height=0.165 pos="414.072, -258.120!" width=0.162]
	102 [label=102 height=0.165 pos="437.400, -258.120!" width=0.162]
	103 [label=103 height=0.165 pos="460.728, -258.120!" width=0.162]
	104 [label=104 height=0.165 pos="390.744, -258.120!" width=0.162]
	105 [label=105 height=0.165 pos="427.194, -568.080!" width=1.985]
	88 -> 30
	30 -> 20
	89 -> 31
	31 -> 21
	90 -> 32
	32 -> 22
	92 -> 33
	33 -> 23
	91 -> 34
	34 -> 24
	20 -> 35
	35 -> 25
	21 -> 36
	36 -> 26
	22 -> 37
	37 -> 27
	24 -> 38
	38 -> 28
	23 -> 39
	39 -> 29
	93 -> 96
	96 -> 88
	94 -> 97
	97 -> 89
	94 -> 98
	98 -> 90
	94 -> 99
	99 -> 91
	95 -> 100
	100 -> 92
	5 -> 101
	101 -> 93
	51 -> 102
	102 -> 93
	3 -> 103
	103 -> 94
	3 -> 104
	104 -> 95
	45 -> 7
	7 -> 0
	69 -> 8
	8 -> 0
	68 -> 9
	9 -> 0
	44 -> 10
	10 -> 0
	70 -> 11
	11 -> 1
	47 -> 12
	12 -> 1
	46 -> 13
	13 -> 1
	71 -> 14
	14 -> 1
	0 -> 15
	15 -> 2
	1 -> 16
	16 -> 3
	1 -> 17
	17 -> 4
	0 -> 18
	18 -> 5
	0 -> 19
	19 -> 6
	40 -> 52
	52 -> 41
	40 -> 53
	53 -> 42
	40 -> 54
	54 -> 43
	40 -> 55
	55 -> 44
	40 -> 56
	56 -> 45
	40 -> 57
	57 -> 46
	40 -> 58
	58 -> 47
	40 -> 59
	59 -> 48
	40 -> 60
	60 -> 49
	40 -> 61
	61 -> 50
	40 -> 62
	62 -> 51
	64 -> 76
	76 -> 65
	64 -> 77
	77 -> 66
	64 -> 78
	78 -> 67
	64 -> 79
	79 -> 68
	64 -> 80
	80 -> 69
	64 -> 81
	81 -> 70
	64 -> 82
	82 -> 71
	64 -> 83
	83 -> 72
	64 -> 84
	84 -> 73
	64 -> 85
	85 -> 74
	64 -> 86
	86 -> 75
}

I appreciate the help.
Thanks.

2

Can you tell if the exit status is a Python/library thing or if it is a Graphviz thing? (maybe run dot multiple times at the command line level)

3

Hi @steveroush,

I tested running dot at the command line using dot files from the above for both successful and unsuccessful cases. The dot file for graphs that rendered successfully took only a short time to render with successful output from the command line. On the other hand, graphs that rendered unsuccessfully took a slightly longer time to render and did not provide an output despite the lack of an error message when using verbose(-v).

I used:
dot -Kneato -Tsvg -n1 -v test.dot -o test.svg

Thanks.

4

What OS (Mac, Windows, Linux, …)?

5

Hi @steveroush,

Windows 11.

Thanks.

6

Hi @steveroush,

This is an example of another graph that passes / fails.

This dot file renders successfully.

digraph {
	graph [margin=0 nodesep=1 pad=3 rankdir=BT ranksep=1 splines=ortho]
	node [fixedsize=true fontsize=3 margin="1,1" pin=true shape=rect]
	0 [label=0 height=0.300 pos="214.326, -228.960!" width=0.364]
	1 [label=1 height=0.270 pos="118.098, -91.800!" width=0.365]
	2 [label=2 height=0.270 pos="24.786, -227.880!" width=0.364]
	3 [label=3 height=0.270 pos="42.282, -91.800!" width=0.364]
	4 [label=4 height=0.270 pos="156.006, -91.800!" width=0.365]
	5 [label=5 height=0.300 pos="138.510, -228.960!" width=0.364]
	6 [label=6 height=0.075 pos="100.602, -220.860!" width=0.364]
	7 [label=7 height=0.270 pos="118.098, -157.680!" width=0.365]
	8 [label=8 height=0.075 pos="176.418, -220.860!" width=0.365]
	9 [label=9 height=0.270 pos="156.006, -157.680!" width=0.365]
	10 [label=10 height=0.075 pos="62.694, -220.860!" width=0.364]
	11 [label=11 height=0.270 pos="80.190, -157.680!" width=0.365]
	12 [label=12 height=0.270 pos="193.914, -91.800!" width=0.365]
	13 [label=13 height=0.270 pos="80.190, -91.800!" width=0.365]
	14 [label=14 height=0.165 pos="142.884, -265.140!" width=0.162]
	15 [label=15 height=0.105 pos="119.556, -124.740!" width=0.162]
	16 [label=16 height=0.165 pos="96.228, -265.140!" width=0.162]
	17 [label=17 height=0.105 pos="72.900, -124.740!" width=0.162]
	18 [label=18 height=0.105 pos="142.884, -124.740!" width=0.162]
	19 [label=19 height=0.165 pos="119.556, -265.140!" width=0.162]
	20 [label=20 height=0.165 pos="131.220, -192.780!" width=0.162]
	21 [label=21 height=0.105 pos="84.564, -190.620!" width=0.162]
	22 [label=22 height=0.105 pos="107.892, -190.620!" width=0.162]
	23 [label=23 height=0.165 pos="201.204, -192.780!" width=0.162]
	24 [label=24 height=0.105 pos="154.548, -190.620!" width=0.162]
	25 [label=25 height=0.105 pos="177.876, -190.620!" width=0.162]
	26 [label=26 height=0.105 pos="37.908, -190.620!" width=0.162]
	27 [label=27 height=0.105 pos="61.236, -190.620!" width=0.162]
	28 [label=28 height=0.105 pos="166.212, -124.740!" width=0.162]
	29 [label=29 height=0.105 pos="96.228, -124.740!" width=0.162]
	30 [label=30 height=0.165 pos="193.914, -18.900!" width=0.365]
	31 [label=31 height=0.165 pos="42.282, -18.900!" width=0.364]
	32 [label=32 height=0.165 pos="118.098, -18.900!" width=0.365]
	33 [label=33 height=0.165 pos="80.190, -18.900!" width=0.365]
	34 [label=34 height=0.165 pos="156.006, -18.900!" width=0.365]
	35 [label=35 height=0.165 pos="163.296, -50.220!" width=0.162]
	36 [label=36 height=0.165 pos="69.984, -50.220!" width=0.162]
	37 [label=37 height=0.165 pos="116.640, -50.220!" width=0.162]
	38 [label=38 height=0.165 pos="93.312, -50.220!" width=0.162]
	39 [label=39 height=0.165 pos="139.968, -50.220!" width=0.162]
	40 [label=40 height=0.075 pos="97.686, -366.660!" width=0.364]
	41 [label=41 height=0.270 pos="156.006, -306.720!" width=0.365]
	42 [label=42 height=0.270 pos="80.190, -306.720!" width=0.365]
	43 [label=43 height=0.285 pos="118.098, -307.260!" width=0.365]
	44 [label=44 height=0.105 pos="139.968, -340.740!" width=0.162]
	45 [label=45 height=0.105 pos="93.312, -340.740!" width=0.162]
	46 [label=46 height=0.105 pos="116.640, -340.740!" width=0.162]
	47 [label=47 height=0.420 pos="135.594, -379.080!" width=0.365]
	48 [label=48 height=0.165 pos="119.556, -426.060!" width=0.810]
	43 -> 14
	14 -> 0
	7 -> 15
	15 -> 1
	42 -> 16
	16 -> 2
	11 -> 17
	17 -> 3
	9 -> 18
	18 -> 4
	43 -> 19
	19 -> 5
	41 -> 20
	20 -> 7
	6 -> 21
	21 -> 7
	5 -> 22
	22 -> 7
	41 -> 23
	23 -> 9
	8 -> 24
	24 -> 9
	0 -> 25
	25 -> 9
	2 -> 26
	26 -> 11
	10 -> 27
	27 -> 11
	9 -> 28
	28 -> 12
	7 -> 29
	29 -> 13
	12 -> 35
	35 -> 30
	3 -> 36
	36 -> 31
	1 -> 37
	37 -> 32
	13 -> 38
	38 -> 33
	4 -> 39
	39 -> 34
	40 -> 44
	44 -> 41
	40 -> 45
	45 -> 42
	40 -> 46
	46 -> 43
}

example2
example21894×471 39.6 KB

This dot file fails to render.

digraph {
	graph [margin=0 nodesep=1 pad=3 rankdir=BT ranksep=1 splines=ortho]
	node [fixedsize=true fontsize=3 margin="1,1" pin=true shape=rect]
	0 [label=0 height=0.075 pos="97.686, -366.660!" width=0.364]
	1 [label=1 height=0.270 pos="118.098, -306.720!" width=0.365]
	2 [label=2 height=0.270 pos="80.190, -306.720!" width=0.365]
	3 [label=3 height=0.285 pos="156.006, -307.260!" width=0.365]
	4 [label=4 height=0.105 pos="116.640, -340.740!" width=0.162]
	5 [label=5 height=0.105 pos="93.312, -340.740!" width=0.162]
	6 [label=6 height=0.105 pos="139.968, -340.740!" width=0.162]
	7 [label=7 height=0.420 pos="135.594, -379.080!" width=0.365]
	8 [label=8 height=0.165 pos="156.006, -18.900!" width=0.365]
	9 [label=9 height=0.165 pos="118.098, -18.900!" width=0.365]
	10 [label=10 height=0.165 pos="80.190, -18.900!" width=0.365]
	11 [label=11 height=0.165 pos="42.282, -18.900!" width=0.364]
	12 [label=12 height=0.165 pos="193.914, -18.900!" width=0.365]
	13 [label=13 height=0.165 pos="139.968, -50.220!" width=0.162]
	14 [label=14 height=0.165 pos="116.640, -50.220!" width=0.162]
	15 [label=15 height=0.165 pos="93.312, -50.220!" width=0.162]
	16 [label=16 height=0.165 pos="69.984, -50.220!" width=0.162]
	17 [label=17 height=0.165 pos="163.296, -50.220!" width=0.162]
	18 [label=18 height=0.300 pos="176.418, -228.960!" width=0.365]
	19 [label=19 height=0.270 pos="80.190, -91.800!" width=0.365]
	20 [label=20 height=0.270 pos="138.510, -227.880!" width=0.364]
	21 [label=21 height=0.270 pos="118.098, -91.800!" width=0.365]
	22 [label=22 height=0.270 pos="193.914, -91.800!" width=0.365]
	23 [label=23 height=0.300 pos="62.694, -228.960!" width=0.364]
	24 [label=24 height=0.075 pos="24.786, -220.860!" width=0.364]
	25 [label=25 height=0.270 pos="80.190, -157.680!" width=0.365]
	26 [label=26 height=0.075 pos="214.326, -220.860!" width=0.364]
	27 [label=27 height=0.270 pos="156.006, -157.680!" width=0.365]
	28 [label=28 height=0.075 pos="100.602, -220.860!" width=0.364]
	29 [label=29 height=0.270 pos="118.098, -157.680!" width=0.365]
	30 [label=30 height=0.270 pos="156.006, -91.800!" width=0.365]
	31 [label=31 height=0.270 pos="42.282, -91.800!" width=0.364]
	32 [label=32 height=0.165 pos="142.884, -265.140!" width=0.162]
	33 [label=33 height=0.105 pos="96.228, -124.740!" width=0.162]
	34 [label=34 height=0.165 pos="119.556, -265.140!" width=0.162]
	35 [label=35 height=0.105 pos="119.556, -124.740!" width=0.162]
	36 [label=36 height=0.105 pos="166.212, -124.740!" width=0.162]
	37 [label=37 height=0.165 pos="96.228, -265.140!" width=0.162]
	38 [label=38 height=0.105 pos="84.564, -190.620!" width=0.162]
	39 [label=39 height=0.105 pos="61.236, -190.620!" width=0.162]
	40 [label=40 height=0.165 pos="37.908, -192.780!" width=0.162]
	41 [label=41 height=0.165 pos="201.204, -192.780!" width=0.162]
	42 [label=42 height=0.105 pos="177.876, -190.620!" width=0.162]
	43 [label=43 height=0.105 pos="154.548, -190.620!" width=0.162]
	44 [label=44 height=0.105 pos="107.892, -190.620!" width=0.162]
	45 [label=45 height=0.105 pos="131.220, -190.620!" width=0.162]
	46 [label=46 height=0.105 pos="142.884, -124.740!" width=0.162]
	47 [label=47 height=0.105 pos="72.900, -124.740!" width=0.162]
	48 [label=48 height=0.165 pos="119.556, -426.060!" width=0.810]
	3 -> 32
	32 -> 18
	25 -> 33
	33 -> 19
	2 -> 34
	34 -> 20
	29 -> 35
	35 -> 21
	27 -> 36
	36 -> 22
	3 -> 37
	37 -> 23
	23 -> 38
	38 -> 25
	24 -> 39
	39 -> 25
	1 -> 40
	40 -> 25
	1 -> 41
	41 -> 27
	26 -> 42
	42 -> 27
	18 -> 43
	43 -> 27
	28 -> 44
	44 -> 29
	20 -> 45
	45 -> 29
	27 -> 46
	46 -> 30
	25 -> 47
	47 -> 31
	30 -> 13
	13 -> 8
	21 -> 14
	14 -> 9
	19 -> 15
	15 -> 10
	31 -> 16
	16 -> 11
	22 -> 17
	17 -> 12
	0 -> 4
	4 -> 1
	0 -> 5
	5 -> 2
	0 -> 6
	6 -> 3
}

example1
example11888×414 36.5 KB

The positions of each node differ slightly every time but remain in the same layer as I am using graphviz to do the initial layout, thus, the positions of the nodes are not fixed.

Thanks.

7

Hi @steveroush,

I tested removing the decimal points on a whim by rounding the numbers for pos, and the graph renders successfully without any problems 10/10 times. I am not sure why this occurs though. Is there a limit of less than 3d.p. for floating point numbers for node positions? If there is, shouldn’t the above line (before applying -height/2) have failed more often too?

Thanks.

8

Seems to be a Windows bug. I ran a loop 100 times with your 1st example on my Linux system and get 100 identical, good results.
Please create an issue here Issues · graphviz / graphviz · GitLab

You might also try removing the pin=true and the ! on the pos values. They are not needed when using the -n option.

9

@steveroush

Sure, thank you for the help.