Chip Anderson

Nice Curves for StockCharts Charts


Check out the cute curves on this "little number":


Those three lines were created with our new Parabola tool that we added to the Flash version of our ChartNotes annotation tool last weekend.

(The red curve was added for fun - just to complete the "smiling face" look on the chart!)

A parabola is a curve created from three points - one at each end of the line and one at the top/bottom of the curve.  By moving the three points around, you can stretch a parabola into any curve that you want.

To create a parabola using ChartNotes, click and hold down your mouse over the "Line" tool button near the top left corner of the ChartNotes window.  When you do that, two additional line drawing tool buttons will appear, one for our "Speed Lines" tool, and below that, the one for our Parabola tool.

After clicking the Parabola tool button, you can draw a parabola in one of two ways.  You can either click and release your mouse at each of the three points that make up the curve OR you can do it the "fun" way -  you can click and drag your mouse to create an "approximate" parabola that we will then replace with a real parabola as soon as you release your mouse button.

Parabolas are prefect for annotating things like rounding bottoms and cup-with-handle patterns but I bet there are lots of other great uses for them that you will find over time.  Enjoy!

- Chip

Chip Anderson
About the author: is the founder and president of He founded the company after working as a Windows developer and corporate consultant at Microsoft from 1987 to 1997. In this blog, Chip shares his tips and tricks on how to maximize the tools and resources available at, and provides updates about new features or additions to the site. Learn More
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Thank you for all the new features. With this one, I finally have a way to evaluate parabolic moves - "bending it" like Beck... er ... Daryl Guppy.
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