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Scout, if you use the on screen angle of a line then it will change during
zooming in/out of the chart. Using the angle of price/bar provides a
consistent approach that will remain the same regardless of how many bars
are viewed. For charting this is more important and is anything but
arbitrary as it is a consistent axis scale across all charts.
Maybe you just need to set up a price/bar that would give you a suitable 1:1
reference
Cheers,
Graham
http://groups.msn.com/asxsharetrading
http://groups.msn.com/fmsaustralia
-----Original Message-----
From: scourt2000 [mailto:stevehite@xxxxxxxxxxx]
Sent: Thursday, 25 December 2003 8:10 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Anyone have any ideas on how to calc an angle on a
34 EMA?
Thanks for the code Anthony.
I think this isn't working out the way I expected because what's
being measured on the x and y axis is not the same unit. There
needs to be a common reference point. If you take an angle tool
from a paint-type package, and, as long as one uses the same width
to height viewing ratio with all charts measured (their images), the
angles will make sense (e.g., the measurements are pixels to pixels
when calculating the slope of a line). However, the angles are
being calculated incorrectly with this Amibroker code because the x- axis is
some arbitrary unit (a price bar) whereas the y-axis is a
price measurement.
Is this making sense?
Steve
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