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opencv-wasm

ml_TrainData_getSubMatrix

mlfunctionOpenCV 5.0.0
import { ml_TrainData_getSubMatrix } from '@banou/opencv-wasm'

Use after await initOpenCV(). See the initialization and named imports guide.

ARGUMENTSmatrix, idx, layout
FUNCTIONml_TrainData_getSubMatrix
RETURN TYPEMat
Call structure. A void return can still write to destination arguments. The parameter descriptions define inputs, outputs and ownership.

Extract from matrix rows/cols specified by passed indexes.

ml_TrainData_getSubMatrix(matrix: Mat, idx: Mat, layout: number): Mat;
matrix

input matrix (supported types: CV_32S, CV_32F, CV_64F)

idx

1D index vector

layout

specifies to extract rows (cv::ml::ROW_SAMPLES) or to extract columns (cv::ml::COL_SAMPLES)

Returns

The Mat result. Release returned native handles with using or delete(), including handles nested in results.

Upstream declaration ↗

These signatures describe this package. Upstream documentation can mention optional backends that are absent from this build. Check runtime compatibility before choosing a backend or file format.