Visualizing Many Data Sets hangs browser

[fgmart-zz]

http://isenseproject.org/projects/2437 try to view all data sets and the browser will hang

We should figure out what's wrong (i.e., let's not destroy data sets in an attempt to fix; find the underlying problem instead)

[doug-salvati]

This project was gradually getting slower to load due to increasing number of data sets. Now, it appears it completely never loads. From stack overflow:

"Aw Snap" means that the OS killed the Chrome process for this tab. This happens when your OS thinks that Chrome did something wrong (like when it allocates too much memory, memory corruption, outdated shared libraries after a system patch).

We may need to make the data delivery more efficient in some way, as it seems loading all at once overloads the browser

[doug-salvati]

The issue is that this project has one clever fellow that put in an astronomical amount of jumps. This breaks the following code from line 182 of Histogram.coffee:

# Make 'fake' data to ensure proper bar spacing
fakeDat = for i in [@globalmin...@globalmax] by @configs.binSize
[i, 0]

It's an out of memory error because the array becomes massive. My first impression is that this code snippet looks like a wrong approach to the problem and the whole step should be re-evaluated. Calculating bar spacing should be a constant time operation, not dependent on the amount of integers appearing on the X-Axis.

The offending data set could be removed, to reproduce the issue just add a huge number to your local project.