alex at tweedly.net
Mon Sep 26 16:54:18 EDT 2022
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 :-)
(*) not quite true, I don't think it can do the complex time + bubble
animations that Hans Rosling uses to such amazing effect -
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'
>> Can anyone give me a clue or a pointer ?
>> Many thanks,
>> 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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