Hi Evan,
I've just discovered Formulas and I'm enjoying its straightforward
crunching. Thank you so much for making this awesome plugin! I'd like to
make a tiddler that shows the overall "feeling score" of a food logging
database by counting the number of results for each mood (bad, decent,
good). Then, I'd find the average of their weighted values: (bad * -1 +
decent * 1 + good * 2) / totalEntries.
I'm stuck on converting the number of results for the filter into a number.
\define bad()
(= value([tag[Food Log]tag[July]tag[bad]count[]]) =)
\end
(= <<bad>> * 2 =)
returns:
ComputeError: Cannot convert "2" to number!
Yet (= value("2") * 2 =) returns 4 as expected. I suspected that the
mushrooms (?) may have been redundant when defining <<bad>>, but removing
them lead to another error.
Thanks,
Emily
On Tuesday, January 16, 2018 at 11:15:24 PM UTC-8 [email protected] wrote:
> Announcing the second generation of my formula plugin for TiddlyWiki.
>
> See the *Formula wiki* for the latest documentation:
> http://evanbalster.com/tiddlywiki/formulas.html
>
> *Report issues and view source GitHub*:
> https://github.com/EvanBalster/TiddlyWikiFormula
>
>
> Formula lets you do computation in TiddlyWiki in the style of popular
> spreadsheet apps Excel and Google Sheets, with the addition of TiddlyWiki's
> own filter, transclude and variable systems. Tiddlers can behave like
> individual rows in a spreadsheet. A large collection of built-in functions
> is included, for use with text, numbers, dates, arrays and regular
> expressions.
>
> Formula is implemented as a widget, with a special *(=* "mushroom
> bracket" *=)* syntax for inclusion in WikiText, and can also be used in
> widget/HTML attributes. Formulas included via transclusion, filters and
> variables are computed and refreshed like any other part of your wiki.
>
> (= ( sum([tag[Profits]get[value]]) - sum(tag[Expenses]get[value]]) ) * {{
> Tax!!rate}} =)
>
> The second generation of formula adds support for local variables,
> comments, lambda functions and element-wise operations on arrays (such as
> filter results), allowing more advanced computations to be expressed inside
> TiddlyWiki. Search the wiki for "demo" to see some of the things I've
> built.
>
>
> The plugin is a work in progress and may have bugs. Please report these
> on GitHub or in this thread.
>
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