So I have tried this with Thomas Elmigers rpn plugin, found here:
https://tid.li/tw5/plugins.html
https://tid.li/tw5/hacks.html#rpnTest
<$macrocall $name="rpn" a={{!!field1}} b={{!!field2}} operation="+" 2/>
<$macrocall $name="rpn" a={{!!field3}} b={{!!field4}} operation="+" 2/>
It is also not possible to add more than 2 fields in a macrocall.
But how can I add the results of each of these expressions? (Has it
something to do with the listwidget you mentioned?)
Perhaps anyone has an idea for a completely other solution of the problem
(see first post). [Please not: An external link to an Excel spreadsheet ;-)]
Am Dienstag, 8. August 2017 13:09:54 UTC+2 schrieb Mat:
>
> Uwe wrote:
>
>
>> Automatically calculating values in the fields and in the tiddler like
>> this example would be a great simplification:
>>
>> {{!!schnitt}}=({{!!field1}}+{{!!field2}}+{{!!field3}}+{{!!field4}})/4
>>
>
>
> While it's not direct (i.e not optimized), it should not be overly
> difficult to make a macro with a listwidget and the argument "( field1 +
> field2 + field3 + field4 ) / 4" and iterates through this to pairwise (i.e
> two numbers and one operator at a time) apply one of the existing
> calculators (e.g Thomas Elmigers rpn plugin).
>
> But then, there must be a *zillion* great js calculators that could just
> be wrapped up as a TW plugin (...he said confidently without having ever
> made a js plugin)
>
> <:-)
>
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