本文整理汇总了C++中IRasterCoverage::source方法的典型用法代码示例。如果您正苦于以下问题：C++ IRasterCoverage::source方法的具体用法？C++ IRasterCoverage::source怎么用？C++ IRasterCoverage::source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IRasterCoverage的用法示例。
在下文中一共展示了IRasterCoverage::source方法的5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: resample
bool OperationHelperRaster::resample(IRasterCoverage& raster1, IRasterCoverage& raster2, ExecutionContext *ctx) {
if ( !raster1.isValid())
return false;
IGeoReference commonGeoref = raster1->georeference();
if ( ctx->_masterGeoref != sUNDEF) {
if(!commonGeoref.prepare(ctx->_masterGeoref))
return false;
}
if (raster1->georeference()!= commonGeoref ){
Resource res;
res.prepare();
QString expr = QString("%3=resample(%1,%2,bicubic)").arg(raster1->source().url().toString()).arg(commonGeoref->source().url().toString()).arg(res.name());
ExecutionContext ctxLocal;
SymbolTable symtabLocal;
if(!commandhandler()->execute(expr,&ctxLocal,symtabLocal))
return false;
QVariant var = symtabLocal.getValue(res.name());
raster1 = var.value<IRasterCoverage>();
}
if ( raster2.isValid() && raster2->georeference()!= commonGeoref ){
Resource res;
res.prepare();
QString expr = QString("%3=resample(%1,%2,bicubic)").arg(raster2->source().url().toString()).arg(commonGeoref->source().url().toString()).arg(res.name());
ExecutionContext ctxLocal;
SymbolTable symtabLocal;
if(!commandhandler()->execute(expr,&ctxLocal,symtabLocal))
return false;
QVariant var = symtabLocal.getValue(res.name());
IRasterCoverage outRaster = var.value<IRasterCoverage>();
raster2.assign(outRaster);
}
return true;
}示例2: process
void OperationWorker::process(){
try {
Operation op(_expression);
SymbolTable tbl;
ExecutionContext ctx;
if(op->execute(&ctx, tbl)){
if ( ctx._results.size() > 0){
for(auto resultName : ctx._results){
Symbol symbol = tbl.getSymbol(resultName);
if ( hasType(symbol._type, itNUMBER)){
result += symbol._var.toDouble();
}else if ( hasType(symbol._type, itSTRING)){
result += symbol._var.toString();
}else if ( hasType(symbol._type, (itCOVERAGE | itTABLE))){
if ( symbol._type == itRASTER){
IRasterCoverage raster = symbol._var.value<IRasterCoverage>();
if ( raster.isValid())
result = raster->source().url().toString();
}
}
}
}
}else {
qDebug() << "operation failed";
}
emit finished();
}catch(const ErrorObject& err){
}
emit finished();
}示例3: runApplication
bool runApplication( OperationExpression opExpr, QString *result){
Operation op(opExpr);
SymbolTable tbl;
ExecutionContext ctx;
if(op->execute(&ctx, tbl)){
if ( ctx._results.size() > 0){
for(auto resultName : ctx._results){
Symbol symbol = tbl.getSymbol(resultName);
if ( hasType(symbol._type, itNUMBER)){
*result += symbol._var.toDouble();
}else if ( hasType(symbol._type, itSTRING)){
*result += symbol._var.toString();
}else if ( hasType(symbol._type, (itCOVERAGE | itTABLE))){
if ( symbol._type == itRASTER){
IRasterCoverage raster = symbol._var.value<IRasterCoverage>();
QUrl url = raster->source().container();
}
}
}
}
return true;
}
return false;
}示例4: execute
bool AggregateRaster::execute(ExecutionContext *ctx, SymbolTable& symTable)
{
if (_prepState == sNOTPREPARED)
if((_prepState = prepare(ctx,symTable)) != sPREPARED)
return false;
IRasterCoverage outputRaster = _outputObj.as<RasterCoverage>();
quint64 currentCount = 0;
BoxedAsyncFunc aggregateFun = [&](const BoundingBox& box) -> bool {
//Size sz = outputRaster->size();
PixelIterator iterOut(outputRaster, box);
BoundingBox inpBox(Pixel(box.min_corner().x,
box.min_corner().y * groupSize(1),
box.min_corner().z * groupSize(2)),
Pixel((box.max_corner().x+1) * groupSize(0) - 1,
(box.max_corner().y + 1) * groupSize(1) - 1,
(box.max_corner().z + 1) * groupSize(2) - 1) );
BlockIterator blockIter(_inputObj.as<RasterCoverage>(),Size<>(groupSize(0),groupSize(1), groupSize(2)), inpBox);
NumericStatistics stats;
PixelIterator iterEnd = iterOut.end();
while(iterOut != iterEnd) {
GridBlock& block = *blockIter;
stats.calculate(block.begin(), block.end(), _method);
double v = stats[_method];
*iterOut = v;
++iterOut;
++blockIter;
updateTranquilizer(currentCount++, 1000);
}
return true;
};
bool res = OperationHelperRaster::execute(ctx, aggregateFun, outputRaster);
if ( res && ctx != 0) {
QVariant value;
value.setValue<IRasterCoverage>(outputRaster);
ctx->setOutput(symTable,value,outputRaster->name(), itRASTER, outputRaster->source() );
}
return res;
}示例5: execute
bool Selection::execute(ExecutionContext *ctx, SymbolTable& symTable)
{
if (_prepState == sNOTPREPARED)
if((_prepState = prepare(ctx, symTable)) != sPREPARED)
return false;
IRasterCoverage outputRaster = _outputObj.as<RasterCoverage>();
IRasterCoverage inputRaster = _inputObj.as<RasterCoverage>();
quint32 rec = 0;
quint32 colIndex = iUNDEF;
std::unordered_map<quint32, quint32> coverageIndex;
if ( _attribColumn != "") {
ITable tbl = inputRaster->attributeTable();
std::vector<QVariant> values = tbl->column(COVERAGEKEYCOLUMN);
for(const QVariant& val : values) {
coverageIndex[val.toInt()] = rec++;
}
colIndex = tbl->columnIndex(_attribColumn);
}
BoxedAsyncFunc selection = [&](const BoundingBox& box ) -> bool {
BoundingBox inpbox = box.size();
inpbox += _base;
inpbox += std::vector<qint32>{0, box.min_corner().y,0};
if ( _zvalue == iUNDEF)
inpbox.copyFrom(box, BoundingBox::dimZ);
PixelIterator iterOut(outputRaster, box);
PixelIterator iterIn(inputRaster, inpbox);
double v_in = 0;
std::for_each(iterOut, iterOut.end(), [&](double& v){
v_in = *iterIn;
if ( v_in != rUNDEF) {
if ( _attribColumn != "") {
quint32 rec = coverageIndex[v_in];
QVariant var = inputRaster->attributeTable()->cell(colIndex, rec);
v = var.toDouble();
if ( isNumericalUndef(v))
v = rUNDEF;
} else {
v = v_in;
}
}
++iterIn;
++iterOut;
}
);
return true;
};
ctx->_threaded = false;
bool resource = OperationHelperRaster::execute(ctx,selection, outputRaster, _box);
if ( resource && ctx != 0) {
QVariant value;
value.setValue<IRasterCoverage>(outputRaster);
ctx->setOutput(symTable, value, outputRaster->name(), itRASTER,outputRaster->source());
}
return resource;
}