Charts widget.

[Paul Dupuis]

Yes, I see it in LC10.0.0dp4. It must be a new widget for LC10, possibly 
only working in LC10 and not earlier versions?

Thank you for directing me to 10.


On 9/26/2022 5:11 PM, Mike Kerner via use-livecode wrote:
> well, i learned something new.
> i don't even see that widget in 9, but i do in 10.
>
> On Mon, Sep 26, 2022 at 4:54 PM Alex Tweedly via use-livecode <
> use-livecode at lists.runrev.com> wrote:
>
>> No, I mean the chart widget (chart - not charts, my mistake).
>>
>> The graph (or linegraph) widget - com.livecode.widget.linegraph - does
>> simple line graphs only.
>>
>> The chart widget - com.livecode.widget.chart - can do everything you
>> ever imagined a chart could do, and more. (*)
>>
>>> The Chart widget is a wrapper forChart.js v3.7.0
>>> <https://www.chartjs.org>in LiveCode. It allows you to create
>>> beautiful and highly customizable charts, in a simple way. Data can be
>>> displayed as a line graph, bar chart, radar chart, donut/pie chart,
>>> polar chart, bubble chart or scatter plot.
>> It really is wonderful - all kinds of charts, very fast, animations,
>> etc. The only drawback I've found so far is that doing time sequence or
>> date sequence charts needs some extra magic, and I don't know how to
>> find that magic.
>>
>> Thanks for the suggestion of reading the .lcb; I probably couldn't have
>> made sense of it anyway - but there is no .lcb file for the chart widget.
>>
>> It's just my bad luck that all the charts I want to do are the kind that
>> is beyond me :-)
>>
>> Alex.
>>
>> (*) not quite true, I don't think it can do the complex time + bubble
>> animations that Hans Rosling uses to such amazing effect -
>>
>> https://singularityhub.com/2010/12/09/hans-rosling-shows-you-200-years-of-global-growth-in-4-minutes-video/
>>
>> On 25/09/2022 23:21, Mike Kerner via use-livecode wrote:
>>> do you mean the graph widget?
>>> if that's what you mean, then...
>>> sorry this isn't more helpful, but to get you started, the graph.lcb file
>>> is in Tools/Extensions/com.livecode.widget.linegraph, if you want to try
>>> reading through it.
>>> it's only 1300 lines, total, including the docs. there is not that much
>>> going on.
>>> there are no private properties that i can see.
>>>
>>> On Sun, Sep 25, 2022 at 4:55 PM Alex Tweedly via use-livecode <
>>> use-livecode at lists.runrev.com> wrote:
>>>
>>>> Anyone using this widget ?
>>>>
>>>> Is there some documentation (other than the obvious dictionary entries)
>>>> about how to do different kinds of chart ?
>>>>
>>>> In the last 4-6 months, I've done 3 or 4 little personal projects where
>>>> I wanted to create a chart, but I've not been able to figure out how to
>>>> use the charts widget to do time-based charts.
>>>>
>>>> What I mean is, e.g., create a chart for the following data ....
>>>>
>>>> 2022-02-01    100
>>>> 2022-02-04    500
>>>> 2022-02-05    525
>>>> 2022-02-17    900
>>>> ....
>>>>
>>>> Obviously, the dates along the X-axis should be spaced properly
>>>> according to their data value, not equally spaced and simply labelled.
>>>>
>>>> Looking at the charts.js documentation, it tells me (or rather, fails to
>>>> tell me, since I can't understand it) that I need to define an 'adapter'
>>>> and shows some sample javascript. I don't really understand how to do it
>>>> simply in javascript - far less how I could use that in the widget.
>>>>
>>>> Can anyone give me a clue or a pointer ?
>>>>
>>>> Many thanks,
>>>>
>>>> Alex.
>>>>
>>>> P.S. currently I solved it using my own GraphMaker library (see LC
>>>> conference from 2018) - but I'd really like to retire that library in
>>>> favour of the new widget.
>>>>
>>>>
>>>>
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