[amibroker] WARNING: Low-level gfx example: Yearly/monthly profit chart

["tipequity" <l3456@xxxxxxxxxx>]

on october 11th 2007, TJ posted a wondeful example of Low-Level gfx 
code showing monthly and yearly returns. Today I notice that for the 
yearly calculation it uses close at end of the first trading day of 
first year and compare it to the first trading day of the 2nd year. In 
my opinion this is an incorrect calculation of yearly change. It 
excludes the movement in prices of the first trading day of first year 
and includes the price movement of the first trading day of next year. 
Looking at the code it seems to me that it makes the same mistake is 
made in calculating monthly returns.


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