On Friday, April 22, 2016 at 12:34:51 PM UTC+2, Martian wrote:
>
> I am playing with D3 plugin examples
> <http://www.google.com/url?q=http%3A%2F%2Ftiddlywiki.com%2Fplugins%2Ftiddlywiki%2Fd3%2F&sa=D&sntz=1&usg=AFQjCNF42mPQhxLfI5zeUQJ1PdtSSAWSYA>
> .
>
ok
> my idea was to create a tiddlers with Title and Text = city names and add
> field "size". I tagged these tiddlers with tag "Cities"
>
> then I created a tiddler "*toJSON*" with macro as
> in $:/core/templates/exporters/JsonFile
>
> \define renderContent()
> <$text text=<<jsontiddlers filter:"[tag[Cities]]">>/>
> \end
> <<renderContent>>
>
>
good idea and imo you are at the right way. But it seems the <$d3cloud>
widget has a very exact idea, how the data has to be presented. ... I had a
very fast look at the code. So it seems the data parameter can only handle
tiddlers with the type application/json. I thought it would be more
flexible and also allows a "json formatted text stream". ... It doesn't :/
> then tried to use these tiddler "toJSON" as source for D3 macros as
> This is a demo of TiddlyWiki5 incorporating a plugin for the [[D3.js]]
> visualization library.
>
> ! Word Cloud
>
> <$d3cloud data="*toJSON*" spiral={{$:/spiral}}/>
>
> but it doesn't work because [[toJSON]] don't have "application/json".
>
> But then I manually copied [[toJSON]] content to tiddler [[toJSON2]] typed
> with "*application/json*" and put it into data="toJSON2" to $d3cloud -
> then it works ok and showed me Word Cloud.
>
Yea. That's the workflow it would need. You need to create a button, that
uses the output of <<jsontiddlers filter:"[tag[Cities]]">> and creates a
new tiddler type application/json that can be fed into the widget. So no
"one click" but a "two click" solution and a bit cumbersome. if you modify
the "city" tiddlers or create a new on, you'll also need to create a new
"data set" the the $d3cloud widget can understand. That's sub-optimal.
IMO the better way would be to extend the widget, so it can be called like
this:
<$d3cloud data=<<jsontiddlers filter:"[tag[Cities]]">> spiral={{$:/spiral}}/
>
---------
The problem is, that I don't have a fast solution.
The button to create a data tiddler that works looks like this:
<$button>
<$action-sendmessage $message="tm-new-tiddler" title="citiesCloudData"
type="application/json" text=<<jsontiddlers filter:"[tag[city]]">>/>
createCouldData
</$button>
Some remarks:
I would use city as a tag for a city and not the plural. It just looks
stange. (most of the time my tags are lower case. So I can remember how to
write them :)
And I would rewrite the d3cloud widget. It seems the examples are the
minimum required functionality to show something. .. Imo they are there to
show, how the library can be used. The widgets are very simple examples and
imo not production ready.
have fun!
Mario
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