OutputDataReadNumpyTXTStrategy Class Reference

Inheritance diagram for OutputDataReadNumpyTXTStrategy:

Collaboration diagram for OutputDataReadNumpyTXTStrategy:

Public Member Functions
OutputData< double > *	readOutputData (std::istream &input_stream)

Detailed Description

Strategy to read OutputData from simple ASCII file with the layout as in numpy.savetxt.

Definition at line 53 of file OutputDataReadStrategy.h.

Member Function Documentation

readOutputData()

OutputData< double > * OutputDataReadNumpyTXTStrategy::readOutputData ( std::istream &  input_stream )

virtual

Implements IOutputDataReadStrategy.

Definition at line 130 of file OutputDataReadStrategy.cpp.

{
    std::string line;
    std::vector<std::vector<double>> data;
 
    // Read numbers from input stream:
    while (std::getline(input_stream, line)) {
        line = trim(line);
        if (line.empty() || !isDoubleStartChar(line[0]))
            continue;
 
        try {
            std::vector<double> dataInRow = DataFormatUtils::parse_doubles(line);
            data.push_back(dataInRow);
        } catch (...) {
            continue;
        }
    }
 
    // validating
    size_t nrows = data.size();
    size_t ncols(0);
    if (nrows)
        ncols = data[0].size();
 
    if (ncols == 0)
        throw std::runtime_error("OutputDataReadNumpyTXTStrategy::readOutputData() -> Error. "
                                 "Can't parse file");
 
    for (size_t row = 0; row < nrows; row++) {
        if (data[row].size() != ncols)
            throw std::runtime_error("OutputDataReadNumpyTXTStrategy::readOutputData() -> Error. "
                                     "Number of elements is different from row to row.");
    }
 
    if (nrows < 2) {
        return ArrayUtils::createData(std::move(data[0])).release();
    } else if (ncols < 2) {
        const size_t size = data.size();
        std::vector<double> vector1d(size);
        for (size_t i = 0; i < size; ++i) {
            vector1d[i] = data[i][0];
        }
        return ArrayUtils::createData(std::move(vector1d)).release();
    } else {
        return ArrayUtils::createData(data).release();
    }
}

References ArrayUtils::createData(), anonymous_namespace{OutputDataReadStrategy.cpp}::isDoubleStartChar(), DataFormatUtils::parse_doubles(), and anonymous_namespace{OutputDataReadStrategy.cpp}::trim().

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The documentation for this class was generated from the following files:

• /home/www/ba/Device/InputOutput/OutputDataReadStrategy.h
• /home/www/ba/Device/InputOutput/OutputDataReadStrategy.cpp