{ "info": { "author": "WAN Ji", "author_email": "wanji@live.com", "bugtrack_url": null, "classifiers": [], "description": "Array stored in database\n========================\n\n`DBArray` is an 2D array stored in database.\nThe purpose of this class is to provide a way to store and access large\narray which can not be loaded into memory.\n\n## Example\n\n```python\nimport numpy as np\nfrom dbarray import DBArray\n\n# Create random array\nnrows = 5\nncols = 8\ndtype = np.float32\narr = np.random.random((nrows, ncols))\narr = np.require(arr, dtype)\nprint arr\n\n\"\"\" `DBArray` from scratch\n\"\"\"\n# Create `DBArray`\ndba1 = DBArray('test1.db')\n# Initialize\ndba1.set_shape((nrows, ncols))\ndba1.set_dtype(dtype)\n\n# Set rows\nfor i in range(nrows):\n dba1[i] = arr[i]\n\n# Convert to ndarray\nprint dba1.tondarray()\n\n\"\"\" `DBArray` from `ndarray`\n\"\"\"\n# Create `DBArray`\ndba2 = DBArray.fromndarray(arr, 'test2.db')\n\n# Check attributes\nprint dba2.nrows, dba2.ncols, 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