High Performance JS heatmaps

http://codeflow.org/entries/2013/feb/04/high-performance-js-heatmaps/

by mariuz • 13 years ago

99 13 13 years ago

borplk• 13 years ago

Interesting. I'd be interested to see a version that uses WebSockets to transfer the data points and draw it on another screen (e.g. analytics, see how users interact in realtime).

ibotty• 13 years ago

there's no need for that to be part of the library though or am i missing things?

pyalot24• 13 years ago

Nope. That's the idea. The library gives you a high performance drawing engine. What you feed it is up to the respective use-case.

mmcnickle4• 13 years ago

It only works for me once after I refresh the page. If I click overlay the data stops persisting. A hard refresh allows it to work again. Ubuntu 12.10 Firefox 18.0.1

pyalot24• 13 years ago

That's an interesting bug.

- Does it work in chrome? (please state chrome version)

- Do you have any error on the javascript console (ctrl+shift+k in firefox, ctrl+shift+j in chrome).

- What GPU/driver are you using?

- Please paste the content of about:gpu in chrome, and about:support (the graphics section) in Firefox

mmcnickle4• 13 years ago

Hi, I can't test it in chrome as WebGL isn't supported.

Firefox graphics: http://pastebin.com/XVdypYVq

Relevant error messages: http://pastebin.com/PvKVwWFi (These are repeated. I missed them the first time round because they were actually warnings rather than errors.

Hardware: http://pastebin.com/x7Jh025T

funthree• 13 years ago

I had the same issue in chrome

2468ben• 13 years ago

I get the same red "hotspot" from moving my mouse around, or scrolling with my cursor in one place. Is there a way to tell the difference with this?

High Performance JS heatmaps

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