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add MultiFieldCreatorArray - a generic MultiField constructor from da…
…tatype, shape, variable_names
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * (C) Copyright 2013 ECMWF. | ||
| * | ||
| * This software is licensed under the terms of the Apache Licence Version 2.0 | ||
| * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. | ||
| * In applying this licence, ECMWF does not waive the privileges and immunities | ||
| * granted to it by virtue of its status as an intergovernmental organisation | ||
| * nor does it submit to any jurisdiction. | ||
| */ | ||
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| /// @author Slavko Brdar | ||
| /// @author Willem Deconinck | ||
| /// @date September 2024 | ||
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| #include <cmath> | ||
| #include <sstream> | ||
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| #include "atlas/array/ArrayDataStore.h" | ||
| #include "atlas/array/DataType.h" | ||
| #include "atlas/array/Range.h" | ||
| #include "atlas/field/MultiFieldCreatorArray.h" | ||
| #include "atlas/field/detail/MultiFieldImpl.h" | ||
| #include "atlas/grid/Grid.h" | ||
| #include "atlas/runtime/Exception.h" | ||
| #include "atlas/runtime/Log.h" | ||
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| namespace atlas { | ||
| namespace field { | ||
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| MultiFieldCreatorArray::MultiFieldCreatorArray() {} | ||
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| MultiFieldCreatorArray::MultiFieldCreatorArray(const eckit::Configuration&) {} | ||
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| MultiFieldCreatorArray::~MultiFieldCreatorArray() = default; | ||
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| MultiFieldImpl* MultiFieldCreatorArray::create(const eckit::Configuration&) const { | ||
| ATLAS_NOTIMPLEMENTED; | ||
| return nullptr; | ||
| } | ||
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| MultiFieldImpl* MultiFieldCreatorArray::create(const array::DataType datatype, const std::vector<int>& shape, const std::vector<std::string>& var_names) const { | ||
| const int dim = shape.size(); | ||
| const int nvar = var_names.size(); | ||
| ATLAS_ASSERT(nvar > 0 && dim > 2, "MultiField must have at least one field name."); | ||
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| int varidx = -1; | ||
| for (int i = 0; i < dim; i++) { | ||
| if (shape[i] == -1) { | ||
| varidx = i; | ||
| break; | ||
| } | ||
| } | ||
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| array::ArrayShape multiarray_shape = shape; | ||
| multiarray_shape[varidx] = nvar; | ||
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| MultiFieldImpl* multifield = new MultiFieldImpl{array::ArraySpec{datatype, multiarray_shape}}; | ||
| auto& multiarray = multifield->array(); | ||
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| std::vector<int> field_shape_vec(multiarray_shape.size() - 1); | ||
| std::vector<int> field_strides_vec(multiarray_shape.size() - 1); | ||
| for (int ivar = 0, i = 0; ivar < nvar; ivar++) { | ||
| if(ivar != varidx) { | ||
| field_shape_vec[i] = multiarray.shape()[ivar]; | ||
| field_strides_vec[i] = multiarray.strides()[ivar]; | ||
| ++i; | ||
| } | ||
| } | ||
| array::ArrayShape field_shape(field_shape_vec); | ||
| array::ArrayStrides field_strides(field_strides_vec); | ||
| array::ArraySpec field_array_spec = array::ArraySpec(field_shape, field_strides); | ||
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| for (size_t ifield = 0; ifield < nvar; ++ifield) { | ||
| idx_t start_index = multiarray.strides()[varidx] * ifield; | ||
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| Field field; | ||
| if (datatype.kind() == array::DataType::KIND_REAL64) { | ||
| double* slice_begin = multiarray.data<double>() + start_index; | ||
| field = Field(var_names[ifield], slice_begin, field_array_spec); | ||
| } | ||
| else if (datatype.kind() == array::DataType::KIND_REAL32) { | ||
| float* slice_begin = multiarray.data<float>() + start_index; | ||
| field = Field(var_names[ifield], slice_begin, field_array_spec); | ||
| } | ||
| else if (datatype.kind() == array::DataType::KIND_INT32) { | ||
| int* slice_begin = multiarray.data<int>() + start_index; | ||
| field = Field(var_names[ifield], slice_begin, field_array_spec); | ||
| } | ||
| else if (datatype.kind() == array::DataType::KIND_INT64) { | ||
| long* slice_begin = multiarray.data<long>() + start_index; | ||
| field = Field(var_names[ifield], slice_begin, field_array_spec); | ||
| } | ||
| else { | ||
| ATLAS_NOTIMPLEMENTED; | ||
| } | ||
| multifield->add(field); | ||
| } | ||
| Log::debug() << "Creating multifield of " << datatype.str() << " type" << std::endl; | ||
| return multifield; | ||
| } | ||
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| // ------------------------------------------------------------------ | ||
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| namespace { | ||
| static MultiFieldCreatorBuilder<MultiFieldCreatorArray> __MultiFieldCreatorArray("MultiFieldCreatorArray"); | ||
| } | ||
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| } // namespace field | ||
| } // namespace atlas |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| /* | ||
| * (C) Copyright 2013 ECMWF. | ||
| * | ||
| * This software is licensed under the terms of the Apache Licence Version 2.0 | ||
| * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. | ||
| * In applying this licence, ECMWF does not waive the privileges and immunities | ||
| * granted to it by virtue of its status as an intergovernmental organisation | ||
| * nor does it submit to any jurisdiction. | ||
| */ | ||
|
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| /// @author Slavko Brdar | ||
| /// @date September 2024 | ||
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| #pragma once | ||
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| #include "atlas/field/MultiFieldCreator.h" | ||
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| namespace eckit { | ||
| class Configuration; | ||
| } | ||
| namespace atlas { | ||
| namespace field { | ||
| class MultiFieldImpl; | ||
| } | ||
| } // namespace atlas | ||
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| namespace atlas { | ||
| namespace field { | ||
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| // ------------------------------------------------------------------ | ||
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| /*! | ||
| * \brief MultiField creator using datatype, shape, variable names as arguments | ||
| * \details | ||
| * shape argument contains -1 at the position which gets filled with variable names | ||
| * Example use: | ||
| * \code{.cpp} | ||
| * MultiFieldImpl* multifield = MultiField::create( | ||
| * datatype, | ||
| * shape, | ||
| * var_names | ||
| * ); | ||
| * \endcode | ||
| */ | ||
| class MultiFieldCreatorArray : public MultiFieldCreator { | ||
| public: | ||
| MultiFieldCreatorArray(); | ||
| MultiFieldCreatorArray(const eckit::Configuration& config); | ||
| ~MultiFieldCreatorArray() override; | ||
| MultiFieldImpl* create(const eckit::Configuration& config = util::Config()) const override; | ||
| MultiFieldImpl* create(const array::DataType datatype, const std::vector<int>& shape, | ||
| const std::vector<std::string>& var_names) const override; | ||
| }; | ||
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| // ------------------------------------------------------------------ | ||
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| } // namespace field | ||
| } // namespace atlas |
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