if you put up say AMD (from free kinetic dataserver)
if you measure a distance from 2.5 to 5 with a box which is a double, like so http://screencast.com/t/KLHVX3gle
then if you move the box so that the bottom is level with 5 , the top should be a double as well, so, it should be 10, but... it actually is (under 9.5)
this testing procedure works correctly on other charting platforms like freestockcharts.com so there is a scaling bug in your code.
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