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Simple answer: Instead of using Print(...) use
FileAppend(...)
syntax can be found in the on line help
H
--- Jay Mackro <jmackro@xxxxxxxxxxxx> wrote:
> I thought I had a terrific idea for creating a "poor
> mans"
> portfolio analyizer. BUT, fate stepped in the way.
> Here's
> the problem I am trying to solve....
>
> I created a workspace with 12 different commodity
> charts.
> I wrote one system, and applied it to all of these
> charts. Of
> course, if I want to optimize a parameter to see its
> impact,
> I have to do this separately on each chart, and
> tally up the
> results manually.
>
> Another way is to change the parameters by
> hard-coding
> them in EasyLanguage, re-verify the system, and let
> it run in
> all 12 charts. Of course, this isn't an
> optimization, but it
> does allow me to see the effect of a change of input
> (or of
> logic) across all of the commodities I am testing.
> The problem
> again is that I need to add up the results manually
> to see if
> the change represents an improvement.
>
> My bright idea was to have the system write its
> results to a
> file upon completion of the final bar, with a
> statement like:
>
> If LastBarOnChart then
> Print(File("c:\directory\filenam.xls"),
> @NetProfit, @NumWinTrades, @TotalTrades);
>
> If this could create a file with multiple rows, one
> for each
> commodity analyized, I could import it into Excel,
> and simply
> add the columns to get a total Net and % winners (of
> course,
> I could write other stuff, and get other statistics
> as well).
>
> The problem is that TradeStation overwrites the file
> each
> time the system runs on the next chart. It doesn't
> keep
> adding rows - as it does when a system/indicator
> writes to
> the print log. So, I was left with a file that just
> had one row
> - which just contained data for the last chart run.
>
> Does anyone know a way around this (yea, I know -
> buy
> Portfolio Analyizer) For example, is there a way I
> can
> write a "new line" command, so when the file is
> re-opened
> the next time around, the system/indicator will
> begin to
> write at record number N + 1 ?
>
> thanks
>
> Jay Mackro
>
>
>
>
>
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