Fix downscaling large models #145
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DirkEilander
approved these changes
Nov 8, 2023
hydromt_sfincs/utils.py
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| with rasterio.open(dep) as src: | ||
| # Define block size | ||
| n1, m1 = src.shape | ||
| nrcb = 2000 # nr of cells in a block |
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Good one, added an nrmax (similar as in setup_subgrid) argument.
| # check for nan-data | ||
| if np.all(np.isnan(block_data)): | ||
| continue | ||
| # Convert row and column indices to pixel coordinates |
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I don't think we need to do this now, but since we are working with rasterio (rather than xarray) it would make sense to also directly use the rasterio warp method rather than the raster.reproject method in _downscale_floodmap_da. I think this could provide quite a significant performance improvement. That would affect the whole block of code below this line.
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Interesting suggestion but let's postpone that for now. I added a TODO to the code
Co-authored-by: DirkEilander <dirk.eilander@gmail.com>
…s/hydromt_sfincs into fix_downscaling_large_models
…tares/hydromt_sfincs into fix_downscaling_large_models
…o fix_downscaling_large_models
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Note this PR builds upon #144 and it solves issue #127