René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Raster graphics / heatmap performance","articleBody":"(continued from #332)\r\n\r\n@jackparmer pointed me towards https://plot.ly/~PythonPlotBot/829, which is a good example of the sort of plots I'm working with.\r\n\r\nOn my machine (laptop without super graphics card, but 16GB ram), that page takes around 17s to load, and then clicking the \"code\" heading crashes the browser tab.\r\n\r\nFrom chrome's profiler, it looks like there's a gap in the middle where the CPU isn't doing much, I'm not sure what's going on there.\r\n![image](https://user-images.githubusercontent.com/734386/27618775-42218d84-5b8c-11e7-9259-5075e4b0da60.png)\r\n\r\nThe plots [here](https://jsfiddle.net/9wh2nz5z/2/) (which are larger) load OK, but demonstrate some unexpected performance differences between the GL and non-GL\r\n\r\n* The mouse interactions for the GL version are laggier than the non-GL one, particularly with the box zoom-selection.\r\n* timing the loads separately (commenting out one at a time) the GL one takes about 4-5sec to load and the non-GL takes 2-3sec.\r\n* when repeatedly re-loading the GL heatmap, it occasionally renders only the color bar, not the actual heatmap.","author":{"url":"https://github.com/ssfrr","@type":"Person","name":"ssfrr"},"datePublished":"2017-06-28T03:47:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/1827/plotly.js/issues/1827"}