Add some scaling options to the statistics histograms - too course now

as/grbk-1071...
now in edit-grade scale for ie8, bar chart loads the first time and I can navigate between the charts.

so now I'll pass it.

well, ie8 DOESN'T work right all the time for me!

for firefox -
on multiple sites -
selecting view-statistics, for course and item grades, all 3 chart types display - ok
selecting edit-grade scale gives me the 3 statistics charts - ok

an issue with firefox is that the abscissa letter grades for the bar chart and the line chart
are hard to read. maybe this is related to mike's comment 13-jul 15:46? or my screen resolution?
whatEVer, it's not a big deal.
the pie chart page letter grades are fine.

for ie8 -
on multiple sites -
selecting view-statistics, for course and item grades, all 3 chart types display - ok
selecting edit-grade scale initially (and sometimes mostly) gives the jpg image above - NOT ok

upon lots of beating on multiple sites...
1 - after getting the problem page, I've left ie8 sitting for up to an hour and the page does not correct itself.
2 - if I edit-grade scale, close and edit-grade scale again, sometimes I eventually get the default bar
chart page. sometimes I don't.
3 - if I edit-grade scale, reset (use the up arrow) and edit-grade scale, I get the usually get problem page and
sometimes I get the correct statistics chart.
4 - if I edit-grade scale, close, edit grade scale and get a good page, then reset and edit-grade scale
again, the problem page is back sometimes.
5 - if I dump the cache and edit-grade scale, I'll get the bad page. I assume the "sometimes works" above
are that gb is pulling the data from the cache and it works if the correct information is in the cache???
or not, at this point....
6 - I finally got an error message, other than the !Done at the bottom of the browser window.
I entered edit-grade scale, closed it, entered it again and got the popup
"Statistics
Was not able to load Visualization APIs"
trust me when I say I've been in and out of edit-grade scale on multiple sites MANY times and only got
the message ONCE.

at this point in time, the only consistency is the !Done at the bottom of the browser window and it's
resultant error message "errors on this web page may cause it to work incorrectly. "

I give up. have other folks test this and the pass or fail it. maybe there are random electrons in my
house that only affect ie8. but I'm pretty tired of beating on it................

in both browsers...
I've previously mentioned that, on the pie chart page, navigating between pages with the triangles
can be REALLY slow. going from page 1 to page 2 for the first time is ok, but navigation from then
on is cumbersome. I don't know if it is speed or if you have to click one specific pixel on the triangles
to precipitate a page change. whatever it is is a pain in the gluteus maximus.

Works fine on IE8

It worked on IE9...

One thing to note, is the algorithm to control the tilting of letter grades is busted, so on dev they tilt. You see this by looking at the course grade stats.

Is that a problem?

DEV
SmartSite@UCDavis - 2.7.2-rc1 - Sakai 2.7.1 - Server "ucddev1"
Gradebook2 v1.6.0-a4

still working but right off the bat I got ie8 to hang. it does it on the edit-grade scale page.
mine is the grbk-897.jpg image.

I'm failing it right now to get someone's attention but will keep testing other aspects