33 from daal.data_management
import PackedSymmetricMatrix, NumericTableIface, BlockDescriptor, readOnly, readWrite
35 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
36 if utils_folder
not in sys.path:
37 sys.path.insert(0, utils_folder)
38 from utils
import printArray
41 if __name__ ==
"__main__":
43 print(
"Packed symmetric matrix example\n")
50 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)
52 dataTable = PackedSymmetricMatrix(NumericTableIface.lowerPackedSymmetricMatrix, data)
54 block = BlockDescriptor()
57 dataTable.getBlockOfRows(firstReadRow, nRead, readOnly, block)
58 print(
"{} rows are read".format(block.getNumberOfRows()))
59 printArray(block.getArray(), nDim, block.getNumberOfRows(), block.getNumberOfColumns(),
60 "Print 3 rows from packed symmetric matrix as float:")
64 dataTable.getBlockOfColumnValues(readFeatureIdx, firstReadRow, nDim, readWrite, block)
65 printArray(block.getArray(), 1, block.getNumberOfRows(), block.getNumberOfColumns(),
66 "Print the third feature of packed symmetric matrix:")
69 dataBlock = block.getArray()
70 dataBlock[readFeatureIdx - 1] = -1
71 dataBlock[readFeatureIdx + 1] = -2
72 dataTable.releaseBlockOfColumnValues(block)
75 dataTable.getBlockOfRows(firstReadRow, nRead, readOnly, block)
76 print(
"{} rows are read".format(block.getNumberOfRows()))
77 printArray(block.getArray(), nDim, block.getNumberOfRows(), block.getNumberOfColumns(),
78 "Print 3 rows from packed symmetric matrix as float:")