Line Plot Widget for sequential data

Hi @dstansby , hi all,

I currently have a couple local implementations of a plotter with line plots based on metadata.
Data are stored in metadata because sometimes I generate data from intensity images which in napari, as far as I know, do not have 'properties' or 'features'.
I would like to have a general line plotter to import from. Thus, I naturally thought about napari-matplotlib!

To encompass all layer types, including the Image layer, I thought about storing the plotting data as a nested dictionary in the layer metadata, somtehing like:

{'plugin_name': 
    {'x_data': array},
    {'y_data': array},
    {'other_data': array} }`

I have some code that works with that kind of structure. Would that be an interesting contribution here?
From a plugin developer's perspective, storing data as a two level dictionary would allow filtering data origin (by 'plugin_name', so different plugins could fit) apart from regular image metadata and then axes would come from the internal keys. @kevinyamauchi , do you think such structure would be interesting?

Here is an example:

For example, for plotting a time series, a developer could include a time dimension array there as well.

If this should not belong here, that's also OK, I could place it somewhere else, just let me know ;)
I can make a Draft PR to further discuss this.

Best,
Marcelo

ファイル、テスト、エントリポイントは特定されていません。まず、提案されているメタデータ構造とウィジェットのスコープについてメンテナーと確認してください。完了の定義は、関連する napari のレイヤー型全体でシーケンシャルデータをプロットするための実装計画について合意できていることです。