Testing my new portfolio report

[Derek Atkins]

Hi,

You can hook in your new report (you need to give it a unique
name -- you cannot call it the portfolio report) basically by
putting your scheme file in the right directory, get it installed,
make sure you give it a unique module name, set up a unique
menu location, and then in standard-reports.scm you want to
add something that looks like:

        (use-modules (gnucash report payables))

This is the magic to hook into the report system with a new report.
Obviously you'd use your new report's module name in place of
"payables" here.

-derek

Martijn van Oosterhout <kleptog@svana.org> writes:

> [Please CC any replies as I'm subscribed no-mail]
> 
> Hi,
> 
> I've been using gnucash quite successfully for the last few months for my
> accounts and it works really well. Except, the portfolio report. It told me
> what I had but not how it compared with what I'd put in and stuff like that.
> So, I started browsing the source and did a crash course in Scheme (ie, I
> read a few websites) and came up with my own portfolio report. It gives much
> detail.
> 
> Note: there is no guarentee anyone else will find it useful, but it tells me
> what I want to know.
> 
> For each stock you select it displays:
> 
> Money In: How much have you paid in total for these stocks, ever.
> Brokerage: Total fees paid
> Dividends: Total dividend received
> Units: How many stock you currently have
> Value: How much these are worth right now
> Money Out: How much you have received in total in sales of these stock, ever
> Gain: Total gain/loss, including unrealised. Value + Money Out - Money In
> Total margin: % gain. Gain / MoneyIn
> Avg Age: Average number of days holding this stock. May be used to estimate
>           annual return
> 
> Note: it can only pick up stuff that appears in transactions attached to the
> account. So for dividends you have to put a zero value split to get it to
> show.
> 
> It does work right now but since I couldn't work out how to add a new report
> to the system, you actually have to copy it over the old portfolio.scm to
> get it to load. Some help here would be nice.
> 
> Known bugs:
> - If you give it an empty account, it dies
> - It doesn't deal will multiple currencies at all
> - It ignores the date you give it
> - It probably gets a divide by zero error sometimes
> 
> The reason I'm emailing now is:
> - Is anyone else interested in this? Should I fix these problems or am I the
>   only one who cares?
> - I'm unhappy about the number of variables I had to add. I wanted to use an
>   ADT but once I saw mention of 6 different types of hash tables I skipped it.
>   There's something to be said for Perl's just-give-me-a-hash approach.
> - If anyone sees a way to replace the large chunks of code with a few
>   filter/map expressions, I'd be very interested.
> 
> Anyway, the code is here. Experienced scheme coders may which to shield
> their eyes :)
> 
> http://svana.org/kleptog/gnucash/portfolio2.scm
> 
> Thanks in advance,
> -- 
> Martijn van Oosterhout <kleptog@svana.org>
> http://svana.org/kleptog/
> > If the company that invents a cure for AIDS is expected to make their
> > money back in 17 years, why can't we ask the same of the company that
> > markets big-titted lip-syncing chicks and goddamn cartoon mice?
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-- 
       Derek Atkins
       Computer and Internet Security Consultant
       derek@ihtfp.com             www.ihtfp.com