svg - d3js - need to find the full size of g element -

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i using d3js create graph. retrieve size of graph use elsewhere in code in javascript. when inspecting element in firebug , going layout tab, shows dimensions in pixels trying grab programatically. however, trying grab g typing $('g').height() returns 0. there special way supposed grab element full rendered height , width?

the svg way call element.getbbox(). give object width , height properties.


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