All values are NaN on matrix and heatmap views for large 2D datasets

[t20100]

Describe the bug

When opening a large 2D dataset containing many curves (shape: 1e6 x 3000, dtype: float32), the matrix and heatmap views display only NaN data, but the line view display the correct data,

To Reproduce

All NaN datasets

Expected behaviour

The correct data should be displayed (or the view disabled).

Screenshots

Context

• OS: Debian10
• Browser: Chromium
• Version: 90.0.4430.212
• H5Web context: jupyterlab_h5web