I totally agree.

Nonetheless, thanks to any contribution to this issue, maybe it helps 
others.

Here is the solution, I made:


<$fieldmangler>
  <$list filter="[is[current]tag[Aktiv]]">
    <$button message="tm-remove-tag" param="Aktiv">&not;Aktiv</$button>
  </$list>
  <$list filter="[is[current]!tag[Aktiv]]">
    <$button message="tm-add-tag" param="Aktiv">Aktiv</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[m]]">
    <$button message="tm-remove-tag" param="m">&not;m</$button>
  </$list>
  <$list filter="[is[current]!tag[m]]">
    <$button message="tm-add-tag" param="m">m</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[w]]">
    <$button message="tm-remove-tag" param="w">&not;w</$button>
  </$list>
  <$list filter="[is[current]!tag[w]]">
    <$button message="tm-add-tag" param="w">w</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[FW51]]">
    <$button message="tm-remove-tag" param="FW51">&not;FW51</$button>
  </$list>
  <$list filter="[is[current]!tag[FW51]]">
    <$button message="tm-add-tag" param="FW51">FW51</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[FW61]]">
    <$button message="tm-remove-tag" param="FW61">&not;FW61</$button>
  </$list>
  <$list filter="[is[current]!tag[FW61]]">
    <$button message="tm-add-tag" param="FW61">FW61</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[FW71]]">
    <$button message="tm-remove-tag" param="FW71">&not;FW71</$button>
  </$list>
  <$list filter="[is[current]!tag[FW71]]">
    <$button message="tm-add-tag" param="FW71">FW71</$button>
  </$list>
</$fieldmangler>
<$fieldmangler>
  <$list filter="[is[current]tag[Facharbeit]]">
    <$button message="tm-remove-tag" 
param="Facharbeit">&not;Facharbeit</$button>
  </$list>
  <$list filter="[is[current]!tag[Facharbeit]]">
    <$button message="tm-add-tag" param="Facharbeit">Facharbeit</$button>
  </$list>
</$fieldmangler>
<!-- Berechne die Summen für alle tiddler, die mit FW51 getaggt sind. Das 
kann später der tag ctr sein.-->

{{!!title}}

[[Wirtschaftsinformatik]]

US01 KA01 + KA02: <$edit-text field='fw51-wi-ka01' size=2/> + <$edit-text 
field='fw51-wi-ka02' size=2/> = {{!!fw51-wi-ka1u2}}<br>
US02 KA03 + KA04: <$edit-text field='fw51-wi-ka03' size=2/> + <$edit-text 
field='fw51-wi-ka04' size=2/> = {{!!fw51-wi-ka3u4}}<br>
//= {{!!fw51-wi-ka1b4}} Punkte Zwischenzeugnis// <br>

MS01 KA05 + KA06: <$edit-text field='fw51-wi-ka05' size=2/> + <$edit-text 
field='fw51-wi-ka06' size=2/> = {{!!fw51-wi-ka5u6}} <br>
= ''{{!!fw51-us-os-wi-summe}}'' Punkte Abschlusszeugnis<br>

Päd. Punkte Abschlusszeugnis WI: <$edit-text 
field='fw51-wi-zeugnis_abschluss' size=2/><br>

<$button>WI: Aktualisieren und Speichern
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-wi-ka01' 
$sumfield2='fw51-wi-ka02' $storefield='fw51-wi-ka1u2'/>
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-wi-ka03' 
$sumfield2='fw51-wi-ka04' $storefield='fw51-wi-ka3u4'/>
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-wi-ka1u2' 
$sumfield2='fw51-wi-ka3u4' $storefield='fw51-wi-ka1b4'/>
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-wi-ka05' 
$sumfield2='fw51-wi-ka06' $storefield='fw51-wi-ka5u6'/>
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-wi-ka1u2' 
$sumfield2='fw51-wi-ka3u4' $storefield='fw51-us-wi-summe'/>
<$action-sumfield2 $filter='[tag[FW51]]' $sumfield='fw51-us-wi-summe' 
$sumfield2='fw51-wi-ka5u6' $storefield='fw51-us-os-wi-summe'/>
</$button>

---

{{!!title}}

[[Controlling]]

MS02 KA01 + KA02: <$edit-text field='fw51-ctr-ka01' size=2/> + <$edit-text 
field='fw51-ctr-ka02' size=2/> <br>//= {{!!fw51-ctr-ka1u2}} Punkte 
Zwischenzeugnis// <br>

OS01 KA03 + KA04: <$edit-text field='fw51-ctr-ka03' size=2/> + <$edit-text 
field='fw51-ctr-ka04' size=2/> = {{!!fw51-ctr-ka3u4}} <br>
= ''{{!!fw51-ctr-summe}}'' Punkte Abschlusszeugnis<br>

Päd. Punkte Abschlusszeugnis CTR: <$edit-text 
field='fw51-ctr-zeugnis_abschluss' size=2/><br>

<$button>CTR: Aktualisieren und Speichern
<$action-sumfield2 $filter='[tag[FW51]]'| $sumfield='fw51-ctr-ka01' 
$sumfield2='fw51-ctr-ka02'| $storefield='fw51-ctr-ka1u2'/>
<$action-sumfield2 $filter='[tag[FW51]]'| $sumfield='fw51-ctr-ka03' 
$sumfield2='fw51-ctr-ka04'| $storefield='fw51-ctr-ka3u4'/>
<$action-sumfield2 $filter='[tag[FW51]]'| $sumfield='fw51-ctr-ka1u2' 
$sumfield2='fw51-ctr-ka3u4'| $storefield='fw51-ctr-summe'/>
</$button>

And this is the (button based) solution only for adding the percentage 
based points, not for the points themselves, not for the grades.

Automatically calculating values in the fields and in the tiddler like this 
example would be a great simplification:

{{!!schnitt}}=({{!!field1}}+{{!!field2}}+{{!!field3}}+{{!!field4}})/4

To comfortably calc with (more than two) fields is often needed. Perhaps 
some day a developer will see this problem and solve it. Let me know. ;-)

Greetings,

Uwe


Am Mittwoch, 2. August 2017 22:21:07 UTC+2 schrieb @TiddlyTweeter:
>
> Welcome to the club of non-functioning math in TW.
>
> Its a mess of half solutions.
>
> Josiah
>
>
> Uwe wrote:
>>
>> in some tiddlers I have some (< 20) fields with numbers in them, ie 
>> {{!!field1}}=2, {{!!field2}}=4 and {{!!field3}}=5 and so on.
>>
>> I imported $:/plugins/mklauber/math.js 
>> <http://mklauber.github.io/tiddly-mathjs/#%24%3A%2Fplugins%2Fmklauber%2Fmath.js>
>>  
>> from http://mklauber.github.io/tiddly-mathjs/
>>
>> Using <$calc>, I *cannot *add the sum of these three fields  
>> {{!!field4}}=<$calc>{{!!field1}} + {{!!field2}} + {{!!field3}}</$calc> 
>> into field4.
>> What went wrong?
>>
>

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