run2bmi21 schrieb:
> Hi,
>
> Does anyone have any hints on improving response times from ASV when
> SVG file has about 5,000 elements? The elements are simple lines
> (4,000) and circles (1,000). For every circle, there's a word or two
> of associated text, positioned just below the circle.
>
> Just wondering whether something as simple as not filling the circles
> with color (fill="none") may help ASV response times.
>
> Currently, the behavior I'm seeing on a Dell Latitude D610 laptop
> (i.e. a new laptop with average CPU) is about a 5 second delay in
> image appearance after file has completely loaded. Also, significant
> zoom and pan delays, say 3-5 seconds on a zoom, and extremely
> lethargic panning.
>
> My guess is, since line elements are the most numerous in the
> SVG, that I should concentrate on optimizing them, but they're already
> perhaps as simple as they're going to get, e.g.
>
> <line stroke="#bbbbbb" visibility="visible" id="edge1to0" x1="100"
> x2="100" y1="100" y2="2600" stroke-width="2"/>
>
> And a typical circle in the SVG looks like:
>
> <circle fill="red" fill-opacity="1.0" stroke="#bbbbbb"
> stroke-width="2" id="vertex0" cx="100" cy="2600" r="76"/>
>
> Does it take ASV a longer time to render an object positioned on the
> canvas with x,y coordinates with decimal values such as 34.56 instead
> of 34?
>
> Thanks in advance for any thoughts.
>
> Doug
hi Doug
have you tried shape-rendering="optimizeSpeed" ?
putting this into your <svg> Element, will cause your graphic to be
drawn without antialising.
usually this will speed up thinks significantly, at the cost of accuracy.
hth
Holger
p.s.: you might want to look at this fine paper by one of the main ASV
developers, which gives some hints on increasing perfomance:
http://www.svgopen.org/2002/papers/sorotokin__svg_secrets/
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