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For a project I have to use four sets of JSON datas (and one of the files is bigger than 10M).

I am loading these files asynchronously using queue.js. Once it's fully loaded and displayed I am meeting two problems.

Firstly, there is no animation when I zoom in or out the window. It's jerky and laggy. Secondly when I tried to zoom with the mouse the the zoom is systematically centered in the top-left corner.

I self-hosted my code here: http://adrienrahier.com/test/SFmap/

you can found the sources here: https://github.com/FracArt/ChallengeSF

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  • No time to look into this right now, but whith all the JSON data you are loading a jerky and laggy experience is what you would expect! – Decio Oct 8 '13 at 9:43
  • it's part of the specifications unfortunately. By the way, I am interested if you have another solution to offer. – Mr Washington Oct 9 '13 at 9:17
  • If the specification is about loading huge amounts of vector data, then I do not think there are very good solutions yet, but as you are already using d3, have a look at: topojson and bl.ock... – Decio Oct 10 '13 at 12:36
  • I will take a look at bl.ocks. Thank you for your answer :-). – Mr Washington Oct 11 '13 at 11:05
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You should check these code blocks from Mike Bostock.

  1. Click to zoom, please also check the comments on this example, links to another series of examples.
  2. Zoomable Geography
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