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qt::charts: revise behaviour if data source changes during preparation #168

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tc3t opened this issue May 21, 2023 · 0 comments
Closed

qt::charts: revise behaviour if data source changes during preparation #168

tc3t opened this issue May 21, 2023 · 0 comments
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charts Related to charting dfgQtTableEditor Related to dfgQtTableEditor example module qt Related to qt-module
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dfgQtTableEditor ...

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@tc3t
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tc3t commented May 21, 2023

Currently it's not clear what happens if data source changes during preparations: for example if constructing xy-graph and during preparation the following happens

  1. Data for column 1 is read for x-data
  2. Data source changes
  3. Data for column 2 is read for y-data

Resulting graph might be a mixture of different data snapshots. These should at least cause a warning, but preferably graph should also be left empty.
@tc3t tc3t added module qt Related to qt-module charts Related to charting dfgQtTableEditor Related to dfgQtTableEditor example labels May 21, 2023
@tc3t tc3t added this to the dfgQtTableEditor 2.6.0 milestone May 21, 2023
tc3t added a commit that referenced this issue Oct 22, 2023
@tc3t
[imp] qt::charts: added support for detecting source changes during d…
4c0b036 
…ata preparation (#168)

-If changes are detected during data preparation, a warning is generated to console.
-In order to detect changes, source must support snapshotID's, current both CsvItemModel and CsvTableView data sources do.
@tc3t tc3t closed this as completed Oct 28, 2023
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charts Related to charting dfgQtTableEditor Related to dfgQtTableEditor example module qt Related to qt-module
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