[Request for comment] Chart Components Project

[Evaldas Latoškinas]

Hello everyone,

As part of the Google Summer of Code 2019, I have worked on a project which aims to add Charts to App Inventor. The project

is in a relatively complete state, and any feedback would be greatly appreciated!

The pull request for the project can be found here: https://github.com/mit-cml/appinventor-sources/pull/1776

Various links, a list of features and some comments can be seen in the main post of the pull request. Also,

I am working on a documentation document which will describe all the features in more depth (it will

also be included in the main post of the PR)

Regards,

Evaldas

[Peter Mathijssen]

Hi Evaldas,

I  asked the AI Power Users to test your new component. Great job.

Peter

[Abraham Getzler]

The internals docs are well detailed,

and a great example for future

component developers.

I learned from the discussion of real time data

and Futures.

The appinventortest board gets lots of

questions from people trying to reinvent

these wheels.

The test server provided worked well,

with design time responsiveness to

sample data in the mocks.

Best Component Ever!

ABG

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[Abraham Getzler]

For your Ideas For Expansion section, you might mention:

BLE Data Sources

Real Time Sync for wave form display

in anticipation of requests from people trying to graph

from their Heart Rate Monitors.

ABG

 

[Evaldas Latoškinas]

Thank you for the feedback on various points! I am really glad that you liked the components!

I will add your recommendations to the PR's Future Work section soon. It might be worthwhile to later on create issues or documentation internally which

would specify possible expansions to the Chart components so it does not get lost with the PR.

Evaldas

On Friday, 23 August 2019 20:09:01 UTC+3, Abraham Getzler wrote:

The internals docs are well detailed,

and a great example for future

component developers.

I learned from the discussion of real time data

and Futures.

The appinventortest board gets lots of

questions from people trying to reinvent

these wheels.

The test server provided worked well,

with design time responsiveness to

sample data in the mocks.

Best Component Ever!

ABG

On Fri, Aug 23, 2019 at 12:28 PM Peter Mathijssen <pmath...@gmail.com> wrote:

Hi Evaldas,

I  asked the AI Power Users to test your new component. Great job.

Peter

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[bh26]

Hi,

This looks very nice.

I have played just a few with it and I may have misunderstood something because I am getting one strange effect.

I add entries everytime I click on a button and I use the Chartdata.clear block to clear the data;

When I use a pie chart the y entry is actually cleared but not the x.

as you can see in the screen after a few clicks I get numerous "labels" for each share of the pie.

what am I doing wrong here?

thanks

Bernard

[Abraham Getzler]

I can't test because the supplied Companion.apk won't run in Genymotion emulators.

What I suspect is happening is that you might have to reset the titles list of the

Chart components to an empty list when you clear the datasets.

ABG

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[Evaldas Latoškinas]

Hi Bernard,

Thank you for reporting the issue. This is, in fact, a bug internally which only happens when using the Clear block with the Pie Chart. I have noted the issue and will push a fix as well as update the link soon.

Cheers,
Evaldas