non scalable SVG ?

[<pl...@pi...>]

Hi,

I came across this SVG on WikiPedia and tried to scale up but it would 
not budge.

http://upload.wikimedia.org/wikipedia/commons/e/e5/Window_function_and_frequency_response_-_Cosine.svg

I had a look at the document source and found that it was created by 
gnuplot 4.6 patch level 0.  That is ostensibly the same as I use on my 
embedded system and it produces SVG that do scale perfectly.

I do notice that the group "gnuplot_canvas" on mine in inside a rect , 
while thier non-scaling one it's the other way around, the rect is the 
outermost element.

<!-- Tie mousing to entire bounding box of the plot -->
<rect x="0" y="0" width="600" height="480" fill="#ffffff" stroke="black" 
stroke-width="1"
onclick="gnuplot_svg.toggleCoordBox(evt)" 
onmousemove="gnuplot_svg.moveCoordBox(evt)"/>

<!-- Also track mouse when it is on a plot element -->
<g id="gnuplot_canvas" onclick="gnuplot_svg.toggleCoordBox(evt)" 
onmousemove="gnuplot_svg.moveCoordBox(evt)">



<g id="gnuplot_canvas">
<rect x="0" y="0" width="576" height="288" fill="none"/>


Now I can't understand why the WP graph is not scalable, indeed what is 
the point of scalable vector graphic that will not scale.

Am I missing something?

Regards, Peter.