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engaging-computing / phpSENSE

An educational data analytics platform.
http://isenseproject.org
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"Full Detail" hides data in small data sets #586

Closed fgmart-zz closed 11 years ago

fgmart-zz commented 11 years ago

Take a look at this scatter plot:

http://isenseproject.org/highvis.php?sessions=6570+6569+6568+6567+6566

(You need to group by Name to get stuff to show up)

Some points are missing unless you check "Full Detail".

This is confusing. Either the right thing should happen, or Full Detail should be checked by default.

mmcguinn commented 11 years ago

I think the issue is the compression algorithm is not being given the correct range of values to consider (and that last point is thus off the map), or there is a bounding issue with point at the rightmost side.

stowellm commented 11 years ago

I've replicated the experiment on dev (http://isensedev.cs.uml.edu/highvis.php?sessions=6307+6306+6305+6304+6303) and it seems to work fine now. Note you can also see data on Scatter without having to first change "Group By:" to "name". A+

The only downside is that the one point off to the right took a second to load, but nevertheless, it did show up.

jaypoulz commented 11 years ago

Hmmmm. This fix works, sure. However, what is the point of even having a "full detail" check box for small data sets? It seems like it would be less confusing for the user if said option was hidden for smaller data sets.