- Ajuda do Scilab
- API Scilab
- legacy
- Low level functions
- AssignOutputVariable
- Boolean reading (Scilab gateway)
- Boolean writing (Scilab gateway)
- Boolean sparse reading (Scilab gateway)
- Boolean sparse writing (Scilab gateway)
- CallOverloadFunction
- Check variable dimensions (Scilab gateway)
- CheckInputArgument
- CheckOutputArgument
- Variable Reference (Scilab gateway)
- Variable dimension (Scilab gateway)
- Variable Type (Scilab gateway)
- Variable Complexity (Scilab gateway)
- Matrix Type (Scilab gateway)
- deleteNamedVariable
- Double reading (Scilab gateway)
- Double writing (Scilab gateway)
- getNbInputArgument (Scilab gateway)
- getNbOutputArgument (Scilab gateway)
- Handle reading (Scilab gateway)
- Handle writing (Scilab gateway)
- Integer Precision (Scilab gateway)
- Integer reading (Scilab gateway)
- Integer writing (Scilab gateway)
- nbInputArgument (Scilab gateway)
- Pointer reading (Scilab gateway)
- Pointer writing (Scilab gateway)
- Polynomial Symbolic Variable (Scilab gateway)
- Polynomial reading (Scilab gateway)
- Polynomial writing (Scilab gateway)
- ReturnArguments
- Sparse matrix reading (Scilab gateway)
- Sparse writing (Scilab gateway)
- String reading (Scilab gateway)
- String writing (Scilab gateway)
- UpdateStack
Please note that the recommended version of Scilab is 2024.1.0. This page might be outdated.
However, this page did not exist in the previous stable version.
Boolean sparse reading (Scilab gateway)
How to read boolean sparse in a gateway.
Syntax
Input argument profile:
SciErr getBooleanSparseMatrix(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, int* _piNbItem, int** _piNbItemRow, int** _piColPos)
Named variable profile:
SciErr readNamedBooleanSparseMatrix(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, int* _piNbItem, int* _piNbItemRow, int* _piColPos)
Arguments
- _pvCtx
Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h
- _piAddress
Address of the Scilab variable.
- _pstName
Name of the variable for "named" functions.
- _piRows
Return number of rows of the variable.
- _piCols
Return number of columns of the variable.
- _piNbItem
Return number of non zero value.
- _piNbItemRow
Return number of item in each rows (size: _iRows). For "Named" function, _piNbItemRow must be allocated before calling function.
- _piColPos
Return column position for each item (size: _iNbItem). For "Named" function, _piColPos must be allocated before calling function.
- SciErr
Error structure where is stored errors messages history and first error number.
Description
This help describes how to read boolean sparse.
Gateway Source
#include "api_scilab.h" int read_write_bsparse(char *fname,void* pvApiCtx) { SciErr sciErr; int i = 0; int j = 0; int k = 0; //first variable info : real matrix of double int iRows = 0; int iCols = 0; int *piAddr = NULL; int iNbItem = 0; int* piNbItemRow = NULL; int* piColPos = NULL; int iCol = 0; int iNewCol = 0; int iNewItem = 0; int* piNewRow = NULL; int* piNewCol = NULL; //check input and output arguments CheckInputArgument(pvApiCtx, 1, 1); CheckOutputArgument(pvApiCtx, 1, 1); //get variable address of the first input argument sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //get size and data from Scilab memory sciErr = getBooleanSparseMatrix(pvApiCtx, piAddr, &iRows, &iCols, &iNbItem, &piNbItemRow, &piColPos); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //Do something with data //convert %T -> %F and %F -> %T iNewItem = (iRows * iCols) - iNbItem; piNewRow = (int*)MALLOC(sizeof(int) * iRows); piNewCol = (int*)MALLOC(sizeof(int) * iNewItem); for(i = 0 ; i < iRows ; i++) { piNewRow[i] = iCols - piNbItemRow[i]; for(j = 0 ; j < iCols ; j++) { int iFind = 0; for(k = 0 ; k < piNbItemRow[i] ; k++) { if(piColPos[iCol + k] == (j + 1)) { iFind = 1; break; } } if(iFind == 0) { piNewCol[iNewCol++] = (j + 1); } } iCol += piNbItemRow[i]; } sciErr = createBooleanSparseMatrix(pvApiCtx, nbInputArgument(pvApiCtx) + 1, iRows, iCols, iNewItem, piNewRow, piNewCol); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1; return 0; }
Scilab test script
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