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Jose,
Showing multiple symbols in one chart (using the PlotForeign
function) is indeed solving my problem but only if I show the
gapless data as the primary symbol and then add the gapped data
series to it using the PlotForeign function. There are no gaps in
the time line any more and the gapped price data nicely shows empty
space where no data is available.
Unfortunately it does not work the other way around: when I show the
gapped data as primary symbol (and this is what you want since all
indicators etdc operate on primary symbol) and then add the gapless
data using the PlotForeign function then the time line still shows
the gaps. The time axis doesn't change after adding the gapless
data series.
So one drawback of this workaround is that you can't use the gapped
data series ("secondary symbol") in indicators, systems
etc any more. Perhaps there is a workaround for that again (p.e.
using ParamStr function) but then things are getting more and more
complicated.
I will however investigate other possiblities: (i) see if I can
change price arrays using p.e. a custom ActiveX component and (ii)
see if I can make indicators etc operate on the secondary data
series...
Regards Robert (any new suggestions are more than welcome).
--- In amibroker@xxxxxxxxxxxxxxx, "rkapers" <rkaper@x> wrote:
> Hi Jose,
>
> Very interesting idea you presented! I will try this and see if it
> does the trick in AB as well. It would help me a lot as long as AB
> cannot force an evenly spaced proportional time axis itself.
Thanks!
>
> Robert.
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Jose" <josesilva22@xxxx> wrote:
> > Rkapers, I'm no expert on AB, but perhaps a "trick" used in
> MetaStock
> > may work here and force charts to show data gaps.
> >
> > In MS, I always plot a known "gapless" data series above the
main
> > price chart, such as an index (All Ords, S&P 500, etc) or known
> padded
> > data. This forces the main chart to display any missing data.
> > Suddenly, that nice chart plot that looked ok before, can look
> > distinctly anemic when all the missing data (i.e., non-trading
> > periods) shows up as data gaps. As a bonus, all indicators will
> now
> > display correct values.
> >
> > jose '-)
> >
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "rkapers" <rkaper@x> wrote:
> > > Hello,
> > >
> > > Yesterday my datafeed stopped for 20 minutes. When the price
> data is
> > > shown in a chart in Amibroker I would expect to SEE this
datagap
> in
> > > the chart.
> > >
> > > But Amibroker just pastes all price data one after another in
> the
> > > chart shoing up as one continuing line. This makes my
indicators
> > > worthless because now it looks like the price makes a big jump
> in
> > > jsut one minute (instead of 20 minutes)
> > >
> > > I try to show a picture of this since i cannot explain easily
(I
> > > hope it shows up properly on your screen):
> > >
> > > ACTUAL CHART:
> > > -- ----
> > > --- -- -- -
> > > - ---
> > >
> > > <-gap in chart
> > >
> > > -
> > > -- ---
> > > ---- ---- ----
> > > ---
> > > ?v?
> > > ... 2:01 2:02 2:03 2:04 2:25 2:26 2:27 ... <-- shown time
axis
> > > ... | | | | | | |
> > >
> > > EXPECTED CHART:
> > > -- ----
> > > --- -- -- -
> > > - ---
> > >
> > >
> > >
> > >
> > >
> > > ----
> > > ---
> > >
> > > ... 2:03 2:04 2:05 2:06 .... 2:23 2:24 2:25 2:26
> > > ... | | | | | | | | |
> > >
> > > Has anyone noticed this? How can I arrange that Amibroker
shows
> data
> > > as shown in the lower chart?
> > >
> > > Any help would be appreciated - this problem causes my trading
> > > systems to give false signals because the the system
interprets
> the
> > > data gap as a sudden price move...
> > >
> > > Robert.
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