Re: [graphviz-interest] Possible bug in dot

On Jul 12, 2013, at 19:13, Ron Savage wrote:
> On 13/07/13 02:00, Emden R. Gansner wrote:
>> On 7/12/13 12:29 AM, Ron Savage wrote:
>>> echo "digraph G { a->b }" | dot -Gsize=200,400
>>> 
>>> Outputs:
>>> 
>>> digraph G {
>>> graph [size="20,40"];
>>> node [label="\N"];
>>> graph [bb="0,0,54,108"];
>>> a [pos="27,90", width="0.75", height="0.5"];
>>> b [pos="27,18", width="0.75", height="0.5"];
>>> a -> b [pos="e,27,36.104 27,71.697 27,63.983 27,54.712 27,46.112"];
>>> }
>>> 
>>> but that bb and size should be the same.
>>> 
>>> I'm not familiar with bb, so I'll leave it for you to decide.
>>> 
>> The bb attribute gives the bounding box of image, in points.
>> The size attribute specifies the maximum size of the image, in inches.
>> As the input graph is small, the size attribute has no effect.
>> (Appending a '!' character to the size will cause the
>> output to be scaled uniformly to fit at least one of the size
>> dimensions. In this case, a small image will be scaled up.)
>> 
>> I assume either the graph [size="20,40"]; or -Gsize=200,400 is a
>> miscopy, as the numbers should be the same.
> 
> Nope. Exactly as output.

Just to let you know, I have:

$ dot -V
dot - graphviz version 2.31.20130706.0446 (20130706.0446)
$ echo "digraph G { a->b }" | dot -Gsize=200,400
digraph G {
	graph [bb="0,0,54,108",
		size="200,400"
	];
	node [label="\N"];
	a	 [height=0.5,
		pos="27,90",
		width=0.75];
	b	 [height=0.5,
		pos="27,18",
		width=0.75];
	a -> b	 [pos="e,27,36.104 27,71.697 27,63.983 27,54.712 27,46.112"];
}



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