Thanks Fred, I think I will play with it a bit more and see if I can find some sort of fix - I really like the simple "% return line" on the linear charts! Fred, would you happen to know if logarithms will work OK for numbers between 0 and 1? ( or GP or anyone? ) Thanks!
Steve ----- Original Message ----- From: "Fred" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, July 05, 2007 7:49 PM Subject: [amibroker] Re: Linear / Logarithmic Equity Line > It'll be simpler to start at either 1 or the value of Initial > Equity ... > > You can always calc for any place along the Equity Curve what CAR or > Total Return or any other performance metric are and put that info in > the title. > > --- In [email protected], "gp_sydney" <[EMAIL PROTECTED]> > wrote: >> >> Steve, >> >> You can't display zero or negative numbers on a log chart. >> >> I'd suggest you filter the equity array before displaying, setting >> some minimum value for all values that are less than that. You might >> need to use trial and error to pick a good minimum value that will >> display the rest of your data in a useful fashion. You won't then be >> able to see values below that minimum, but the rest of your data >> should make more sense. >> >> GP >> >> >> --- In [email protected], "Steve Dugas" <sjdugas@> wrote: >> > >> > Hi All, >> > >> > I wrote some code that plots an equity line with overlying >> regression line. It will plot correctly on linear or semi-log chart. >> Then I applied a little change so that the scale on the right starts >> at zero and displays % return rather than actual account equity. The >> line looks the same, only the scale is different. I like this > better, >> except that the line looks very strange when I switch to the >> logaritmic chart. I *think* this is because the line starts at zero, >> and may go negative at times, and logarithms do not seem to work so >> well with these values. Just wondering if any math wizards out there >> might know of a workaround to correct this kind of problem? Thanks >> very much! >> > >> > Steve >> > >> > > > > > Please note that this group is for discussion between users only. > > To get support from AmiBroker please send an e-mail directly to > SUPPORT {at} amibroker.com > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > http://www.amibroker.com/devlog/ > > For other support material please check also: > http://www.amibroker.com/support.html > > Yahoo! Groups Links > > > >
