本文整理汇总了C++中AbstractMatrix::writeElementAs方法的典型用法代码示例。如果您正苦于以下问题：C++ AbstractMatrix::writeElementAs方法的具体用法？C++ AbstractMatrix::writeElementAs怎么用？C++ AbstractMatrix::writeElementAs使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AbstractMatrix的用法示例。
在下文中一共展示了AbstractMatrix::writeElementAs方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: assignDoubleMatrix
/**
* direction: 0 -- copy values from @values to @ptr,
* 1 -- copy values from @ptr to @values...
*/
SEXP assignDoubleMatrix(SEXP ptr, SEXP obsIndexes, SEXP varIndexes, SEXP values, SEXP direction){
//flush(cout);
unsigned long varNum, obsNum, obsIndexNum, varIndexNum;
AbstractMatrix * p = getAbstractMatrixFromSEXP(ptr);
double coeff = 1. * length(obsIndexes) / p->getNumObservations();
unsigned long dir = (unsigned long) INTEGER(direction)[0];
double *currentValues = 0;
if (!(coeff < WRITE_SPEED_PROPORTION)) {
currentValues = new double[p->getNumObservations()];
}
unsigned long varIndexesLength = length(varIndexes);
unsigned long obsIndexesLength = length(obsIndexes);
for(varIndexNum = 0; varIndexNum < varIndexesLength; varIndexNum ++){
varNum = (unsigned long)INTEGER(varIndexes)[varIndexNum]-1;
if ( coeff < WRITE_SPEED_PROPORTION) {
for(obsIndexNum = 0; obsIndexNum < obsIndexesLength; obsIndexNum ++){
obsNum = (unsigned long)INTEGER(obsIndexes)[obsIndexNum]-1;
try {
if (dir==0) {
double value = REAL(values)[varIndexNum *obsIndexesLength + obsIndexNum];
p->writeElementAs(varNum, obsNum,value);
} else {
double value;
p->readElementAs(varNum, obsNum,value);
REAL(values)[varIndexNum *obsIndexesLength + obsIndexNum] = value;
}
} catch(int errorCode) {
return R_NilValue;
}
}
} else {
try {
if (dir==0) {
p->readVariableAs(varNum, currentValues);
for(obsIndexNum = 0; obsIndexNum < obsIndexesLength; obsIndexNum ++){
obsNum = (unsigned long)INTEGER(obsIndexes)[obsIndexNum] - 1;
currentValues[obsNum] = REAL(values)[varIndexNum*obsIndexesLength+obsIndexNum];
}
p->writeVariableAs(varNum, currentValues);
} else {
p->readVariableAs(varNum, currentValues);
for(obsIndexNum = 0; obsIndexNum < obsIndexesLength; obsIndexNum ++){
obsNum = (unsigned long)INTEGER(obsIndexes)[obsIndexNum] - 1;
REAL(values)[varIndexNum*obsIndexesLength+obsIndexNum] = currentValues[obsNum];
}
}
} catch(int errorCode){
delete [] currentValues;
return R_NilValue;
}
}
}
if (!(coeff < WRITE_SPEED_PROPORTION)) {
delete [] currentValues;
}
SEXP ret;
PROTECT(ret = allocVector(LGLSXP, 1));
LOGICAL(ret)[0] = TRUE;
UNPROTECT(1);
//flush(cout);
return ret;
}