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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) DIGITEO - 2009 - Sylvestre LEDRU
*
* This file is released under the 3-clause BSD license. See COPYING-BSD.
*
* This example shows how to read / write a matrix from Scilab engine
*
* This example works from Scilab 5.2
* but the previous way of doing is also described as comment
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "api_scilab.h"
#include "call_scilab.h" /* Provide functions to call Scilab engine */
/*------------------------------------------------------------*/
int main(void)
{
#ifdef _MSC_VER
if ( StartScilab(NULL, NULL, 0) == FALSE )
#else
if ( StartScilab(getenv("SCI"), NULL, 0) == FALSE )
#endif
{
fprintf(stderr, "Error while calling StartScilab\n");
return -1;
}
/******************************** WRITE ****************************/
/*
* Write a line matrix into Scilab
* A=[ 1 3 3 2 ];
*/
{
double A[] = {1, 3, 3, 2}; /* Declare the matrix */
int rowA = 1, colA = 4; /* Size of the matrix */
char variableName[] = "A";
SciErr sciErr;
/*
* Write it into Scilab's memory
*/
sciErr = createNamedMatrixOfDouble(pvApiCtx, variableName, rowA, colA, A);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
printf("Display from Scilab of A:\n");
SendScilabJob("disp(A);"); /* Display A */
}
/*
* Write a matrix into Scilab
* B=[1 4 2 3;
* 3 9 8 2 ]
* Note that it is done column by column
*/
{
double B[] = {1, 3, 4, 9, 2, 8, 3, 2}; /* Declare the matrix */
int rowB = 2, colB = 4; /* Size of the matrix */
char variableNameB[] = "B";
SciErr sciErr;
/*
* Write it into Scilab's memory
*/
sciErr = createNamedMatrixOfDouble(pvApiCtx, variableNameB, rowB, colB, B);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
printf("\n");
printf("Display from Scilab of B:\n");
SendScilabJob("disp(B);"); /* Display B */
}
/******************************** READ ****************************/
/* Load the previously set variable A */
{
int rowA_ = 0, colA_ = 0, lp = 0;
int i = 0, j = 0;
double *matrixOfDouble = NULL;
char variableToBeRetrieved[] = "A";
SciErr sciErr;
/* First, retrieve the size of the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrieved, &rowA_, &colA_, NULL);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
/* Alloc the memory */
matrixOfDouble = (double*)malloc((rowA_ * colA_) * sizeof(double));
/* Load the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrieved, &rowA_, &colA_, matrixOfDouble);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
printf("\n");
printf("Display from A (size: %d, %d):\n", rowA_, colA_);
for (i = 0; i < rowA_ * colA_; i++)
{
fprintf(stdout, "A[%d] = %5.2f\n", i, matrixOfDouble[i]);
}
if (matrixOfDouble)
{
free(matrixOfDouble);
matrixOfDouble = NULL;
}
}
/* Load the previously set variable B */
{
int rowB_ = 0, colB_ = 0, lp_ = 0;
double *matrixOfDoubleB = NULL;
int i = 0, j = 0;
char variableToBeRetrievedB[] = "B";
SciErr sciErr;
/* First, retrieve the size of the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, NULL);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
/* Alloc the memory */
matrixOfDoubleB = (double*)malloc((rowB_ * colB_) * sizeof(double));
/* Load the matrix */
sciErr = readNamedMatrixOfDouble(pvApiCtx, variableToBeRetrievedB, &rowB_, &colB_, matrixOfDoubleB);
if (sciErr.iErr)
{
printError(&sciErr, 0);
}
printf("\n");
printf("Display from B raw (size: %d, %d):\n", rowB_, colB_);
for (i = 0; i < rowB_ * colB_; i++)
{
/* Display the raw matrix */
fprintf(stdout, "B[%d] = %5.2f\n", i, matrixOfDoubleB[i]);
}
printf("\n");
printf("Display from B formated (size: %d, %d):\n", rowB_, colB_);
for (j = 0 ; j < rowB_ ; j++)
{
for (i = 0 ; i < colB_ ; i++)
{
/* Display the formated matrix ... the way the user
* expect */
printf("%5.2f ", matrixOfDoubleB[i * rowB_ + j]);
}
printf("\n"); /* New row of the matrix */
}
if (matrixOfDoubleB)
{
free(matrixOfDoubleB);
matrixOfDoubleB = NULL;
}
}
if ( TerminateScilab(NULL) == FALSE )
{
fprintf(stderr, "Error while calling TerminateScilab\n");
return -2;
}
return 0;
}
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