31 from daal.data_management
import PackedSymmetricMatrix, NumericTableIface, BlockDescriptor, readOnly, readWrite
33 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
34 if utils_folder
not in sys.path:
35 sys.path.insert(0, utils_folder)
36 from utils
import printArray
39 if __name__ ==
"__main__":
41 print(
"Packed symmetric matrix example\n")
48 data = np.array([0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4], dtype=np.float64)
50 dataTable = PackedSymmetricMatrix(NumericTableIface.lowerPackedSymmetricMatrix, data)
52 block = BlockDescriptor()
55 dataTable.getBlockOfRows(firstReadRow, nRead, readOnly, block)
56 print(
"{} rows are read".format(block.getNumberOfRows()))
57 printArray(block.getArray(), nDim, block.getNumberOfRows(), block.getNumberOfColumns(),
58 "Print 3 rows from packed symmetric matrix as float:")
62 dataTable.getBlockOfColumnValues(readFeatureIdx, firstReadRow, nDim, readWrite, block)
63 printArray(block.getArray(), 1, block.getNumberOfRows(), block.getNumberOfColumns(),
64 "Print the third feature of packed symmetric matrix:")
67 dataBlock = block.getArray()
68 dataBlock[readFeatureIdx - 1] = -1
69 dataBlock[readFeatureIdx + 1] = -2
70 dataTable.releaseBlockOfColumnValues(block)
73 dataTable.getBlockOfRows(firstReadRow, nRead, readOnly, block)
74 print(
"{} rows are read".format(block.getNumberOfRows()))
75 printArray(block.getArray(), nDim, block.getNumberOfRows(), block.getNumberOfColumns(),
76 "Print 3 rows from packed symmetric matrix as float:")