Area chart should fill negative values from zero

[phraktle]

Values in an XYChart area should be filled from zero, not the bottom of the chart so negative values are rendered properly.

Related to #247

[phraktle]

Thanks @KIvanov23, I will test it soon!

[phraktle]

@KIvanov23, thank you, it works as expected.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

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Work for 15.0 AEUR has been submitted by:

1. @kivanov23

@phraktle please take a look at the submitted work:

• (Link Not Provided) by @KIvanov23

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[konstiv23]

The pull request: #327

[timmolter]

The PR broke normal area chart rendering. See PR for comments.

[phraktle]

Hi @KIvanov23, can you please submit a fix as requested in #327? Thanks!

[konstiv23]

Hi, @phraktle, sorry but no. Filling to bottom is expected behavior for previous users. Filling to zero would require a new XYSeriesRenderStyle. I don't have time for that now. I have removed myself from the task. Goodbye.

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

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Workers have applied to start work.

These users each claimed they can complete the work by 1 month, 3 weeks from now.
Please review their action plans below:

1) mikegsus has applied to start work (Funders only: approve worker | reject worker).

Verify the datas and check how chart is working to can add functions to get negative fill to zero.

Learn more on the Gitcoin Issue Details page.