mirror of
https://github.com/ClickHouse/ClickHouse.git
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add h3ToCenterChild function (#33313)
This commit is contained in:
Bharat Nallan
GitHub
parent
62441f0a0f
commit
4dd8b65a1c
@ -812,4 +812,41 @@ Result:
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└─────────────────────┘
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```
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## h3ToCenterChild {#h3tocenterchild}
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Returns the center child (finer) [H3](#h3index) index contained by given [H3](#h3index) at the given resolution.
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**Syntax**
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``` sql
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h3ToCenterChild(index, resolution)
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```
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**Parameter**
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- `index` — Hexagon index number. Type: [UInt64](../../../sql-reference/data-types/int-uint.md).
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- `resolution` — Index resolution. Range: `[0, 15]`. Type: [UInt8](../../../sql-reference/data-types/int-uint.md).
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**Returned values**
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- [H3](#h3index) index of the center child contained by given [H3](#h3index) at the given resolution.
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Type: [UInt64](../../../sql-reference/data-types/int-uint.md).
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**Example**
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Query:
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``` sql
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SELECT h3ToCenterChild(577023702256844799,1) AS centerToChild;
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```
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Result:
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``` text
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┌──────centerToChild─┐
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│ 581496515558637567 │
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└────────────────────┘
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```
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[Original article](https://clickhouse.com/docs/en/sql-reference/functions/geo/h3) <!--hide-->
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115
src/Functions/h3ToCenterChild.cpp
Normal file
115
src/Functions/h3ToCenterChild.cpp
Normal file
@ -0,0 +1,115 @@
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#include "config_functions.h"
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#if USE_H3
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#include <Columns/ColumnArray.h>
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#include <Columns/ColumnsNumber.h>
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#include <DataTypes/DataTypeArray.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <Functions/FunctionFactory.h>
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#include <Functions/IFunction.h>
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#include <Common/typeid_cast.h>
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#include <IO/WriteHelpers.h>
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#include <base/range.h>
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#include <constants.h>
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#include <h3api.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int ARGUMENT_OUT_OF_BOUND;
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extern const int ILLEGAL_COLUMN;
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}
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namespace
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{
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class FunctionH3ToCenterChild : public IFunction
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{
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public:
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static constexpr auto name = "h3ToCenterChild";
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static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionH3ToCenterChild>(); }
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std::string getName() const override { return name; }
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size_t getNumberOfArguments() const override { return 2; }
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bool useDefaultImplementationForConstants() const override { return true; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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const auto * arg = arguments[0].get();
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if (!WhichDataType(arg).isUInt64())
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throw Exception(
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Illegal type {} of argument {} of function {}. Must be UInt64",
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arg->getName(), 1, getName());
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arg = arguments[1].get();
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if (!WhichDataType(arg).isUInt8())
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throw Exception(
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Illegal type {} of argument {} of function {}. Must be UInt8",
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arg->getName(), 2, getName());
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return std::make_shared<DataTypeUInt64>();
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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const auto * col_hindex = checkAndGetColumn<ColumnUInt64>(arguments[0].column.get());
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if (!col_hindex)
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throw Exception(
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ErrorCodes::ILLEGAL_COLUMN,
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"Illegal type {} of argument {} of function {}. Must be UInt64.",
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arguments[0].type->getName(),
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1,
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getName());
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const auto & data_hindex = col_hindex->getData();
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const auto * col_resolution = checkAndGetColumn<ColumnUInt8>(arguments[1].column.get());
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if (!col_resolution)
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throw Exception(
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ErrorCodes::ILLEGAL_COLUMN,
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"Illegal type {} of argument {} of function {}. Must be UInt8.",
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arguments[0].type->getName(),
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1,
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getName());
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const auto & data_resolution = col_resolution->getData();
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auto dst = ColumnVector<UInt64>::create();
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auto & dst_data = dst->getData();
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dst_data.resize(input_rows_count);
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for (size_t row = 0; row < input_rows_count; ++row)
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{
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if (data_resolution[row] > MAX_H3_RES)
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throw Exception(
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ErrorCodes::ARGUMENT_OUT_OF_BOUND,
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"The argument 'resolution' ({}) of function {} is out of bounds because the maximum resolution in H3 library is {}",
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toString(data_resolution[row]),
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getName(),
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toString(MAX_H3_RES));
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UInt64 res = cellToCenterChild(data_hindex[row], data_resolution[row]);
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dst_data[row] = res;
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}
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return dst;
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}
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};
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}
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void registerFunctionH3ToCenterChild(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionH3ToCenterChild>();
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}
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}
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#endif
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@ -36,6 +36,7 @@ void registerFunctionH3KRing(FunctionFactory &);
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void registerFunctionH3GetBaseCell(FunctionFactory &);
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void registerFunctionH3ToParent(FunctionFactory &);
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void registerFunctionH3ToChildren(FunctionFactory &);
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void registerFunctionH3ToCenterChild(FunctionFactory &);
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void registerFunctionH3IndexesAreNeighbors(FunctionFactory &);
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void registerFunctionStringToH3(FunctionFactory &);
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void registerFunctionH3ToString(FunctionFactory &);
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@ -96,6 +97,7 @@ void registerFunctionsGeo(FunctionFactory & factory)
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registerFunctionH3GetBaseCell(factory);
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registerFunctionH3ToParent(factory);
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registerFunctionH3ToChildren(factory);
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registerFunctionH3ToCenterChild(factory);
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registerFunctionH3IndexesAreNeighbors(factory);
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registerFunctionStringToH3(factory);
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registerFunctionH3ToString(factory);
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120
tests/queries/0_stateless/02155_h3_to_center_child.reference
Normal file
120
tests/queries/0_stateless/02155_h3_to_center_child.reference
Normal file
@ -0,0 +1,120 @@
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581496515558637567
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585996266895310847
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590499385486344191
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595002924984172543
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599506517095350271
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604010115783196671
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608513715293126655
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613017314905817087
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617520914531352575
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622024514158493695
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626528113785835519
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631031713413202431
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635535313040572479
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640038912667942919
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644542512295313408
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586018257127866367
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590521375718899711
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595024915216728063
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599528507327905791
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604032106015752191
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608535705525682175
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613039305138372607
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617542904763908095
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622046504391049215
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626550104018391039
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631053703645757951
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635557303273127999
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640060902900498439
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644564502527868928
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590524674253783039
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595028213751611391
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599531805862789119
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604035404550635519
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608539004060565503
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613042603673255935
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617546203298791423
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622049802925932543
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626553402553274367
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631057002180641279
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635560601808011327
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640064201435381767
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644567801062752256
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595028557348995071
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599532149460172799
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604035748148019199
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608539347657949183
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613042947270639615
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617546546896175103
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622050146523316223
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626553746150658047
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631057345778024959
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635560945405395007
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640064545032765447
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644568144660135936
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599532200999780351
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604035799687626751
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608539399197556735
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613042998810247167
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617546598435782655
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622050198062923775
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626553797690265599
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631057397317632511
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635560996945002559
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640064596572372999
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644568196199743488
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604035805056335871
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608539404566265855
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613043004178956287
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617546603804491775
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622050203431632895
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626553803058974719
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631057402686341631
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635561002313711679
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640064601941082119
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644568201568452608
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608539405371572223
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613043004984262655
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617546604609798143
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622050204236939263
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626553803864281087
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631057403491647999
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635561003119018047
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640064602746388487
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644568202373758976
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612640339485786111
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617143939111321599
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621647538738462719
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626151138365804543
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630654737993171455
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635158337620541503
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639661937247911943
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644165536875282432
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617143939115515903
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621647538742657023
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626151138369998847
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630654737997365759
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635158337624735807
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639661937252106247
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644165536879476736
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621647538742657023
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626151138369998847
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630654737997365759
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635158337624735807
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639661937252106247
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644165536879476736
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626151138369998847
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630654737997365759
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635158337624735807
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639661937252106247
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644165536879476736
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630654737997365759
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635158337624735807
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639661937252106247
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644165536879476736
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635158337624735807
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639661937252106247
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644165536879476736
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||||
639661937252106247
|
||||
644165536879476736
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644165536879476736
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135
tests/queries/0_stateless/02155_h3_to_center_child.sql
Normal file
135
tests/queries/0_stateless/02155_h3_to_center_child.sql
Normal file
@ -0,0 +1,135 @@
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-- Tags: no-fasttest
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DROP TABLE IF EXISTS h3_indexes;
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--Note: id column just exists to keep the test results sorted.
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-- Order is not guaranteed with h3_index or res columns as we test the same h3_index at various resolutions.
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CREATE TABLE h3_indexes (id UInt8, h3_index UInt64, res UInt8) ENGINE = Memory;
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-- Test cases taken from fixture: https://github.com/uber/h3/blob/master/src/apps/testapps/testCellToCenterChild.c
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INSERT INTO h3_indexes VALUES (1,577023702256844799,1);
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INSERT INTO h3_indexes VALUES (2,577023702256844799,2);
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INSERT INTO h3_indexes VALUES (3,577023702256844799,3);
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INSERT INTO h3_indexes VALUES (4,577023702256844799,4);
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INSERT INTO h3_indexes VALUES (5,577023702256844799,5);
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INSERT INTO h3_indexes VALUES (6,577023702256844799,6);
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INSERT INTO h3_indexes VALUES (7,577023702256844799,7);
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INSERT INTO h3_indexes VALUES (8,577023702256844799,8);
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INSERT INTO h3_indexes VALUES (9,577023702256844799,9);
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INSERT INTO h3_indexes VALUES (10,577023702256844799,10);
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INSERT INTO h3_indexes VALUES (11,577023702256844799,11);
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INSERT INTO h3_indexes VALUES (12,577023702256844799,12);
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INSERT INTO h3_indexes VALUES (13,577023702256844799,13);
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INSERT INTO h3_indexes VALUES (14,577023702256844799,14);
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INSERT INTO h3_indexes VALUES (15,577023702256844799,15);
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INSERT INTO h3_indexes VALUES (16,581518505791193087,2);
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INSERT INTO h3_indexes VALUES (17,581518505791193087,3);
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INSERT INTO h3_indexes VALUES (18,581518505791193087,4);
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INSERT INTO h3_indexes VALUES (19,581518505791193087,5);
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INSERT INTO h3_indexes VALUES (20,581518505791193087,6);
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INSERT INTO h3_indexes VALUES (21,581518505791193087,7);
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INSERT INTO h3_indexes VALUES (22,581518505791193087,8);
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INSERT INTO h3_indexes VALUES (23,581518505791193087,9);
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INSERT INTO h3_indexes VALUES (24,581518505791193087,10);
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INSERT INTO h3_indexes VALUES (25,581518505791193087,11);
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INSERT INTO h3_indexes VALUES (26,581518505791193087,12);
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INSERT INTO h3_indexes VALUES (27,581518505791193087,13);
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INSERT INTO h3_indexes VALUES (28,581518505791193087,14);
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INSERT INTO h3_indexes VALUES (29,581518505791193087,15);
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||||
INSERT INTO h3_indexes VALUES (30,586021555662749695,3);
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INSERT INTO h3_indexes VALUES (31,586021555662749695,4);
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INSERT INTO h3_indexes VALUES (32,586021555662749695,5);
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INSERT INTO h3_indexes VALUES (33,586021555662749695,6);
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INSERT INTO h3_indexes VALUES (34,586021555662749695,7);
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||||
INSERT INTO h3_indexes VALUES (35,586021555662749695,8);
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||||
INSERT INTO h3_indexes VALUES (36,586021555662749695,9);
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||||
INSERT INTO h3_indexes VALUES (37,586021555662749695,10);
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||||
INSERT INTO h3_indexes VALUES (38,586021555662749695,11);
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INSERT INTO h3_indexes VALUES (39,586021555662749695,12);
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||||
INSERT INTO h3_indexes VALUES (40,586021555662749695,13);
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||||
INSERT INTO h3_indexes VALUES (41,586021555662749695,14);
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||||
INSERT INTO h3_indexes VALUES (42,586021555662749695,15);
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||||
INSERT INTO h3_indexes VALUES (43,590525017851166719,4);
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INSERT INTO h3_indexes VALUES (44,590525017851166719,5);
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||||
INSERT INTO h3_indexes VALUES (45,590525017851166719,6);
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INSERT INTO h3_indexes VALUES (46,590525017851166719,7);
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||||
INSERT INTO h3_indexes VALUES (47,590525017851166719,8);
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||||
INSERT INTO h3_indexes VALUES (48,590525017851166719,9);
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INSERT INTO h3_indexes VALUES (49,590525017851166719,10);
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||||
INSERT INTO h3_indexes VALUES (50,590525017851166719,11);
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||||
INSERT INTO h3_indexes VALUES (51,590525017851166719,12);
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||||
INSERT INTO h3_indexes VALUES (52,590525017851166719,13);
|
||||
INSERT INTO h3_indexes VALUES (53,590525017851166719,14);
|
||||
INSERT INTO h3_indexes VALUES (54,590525017851166719,15);
|
||||
INSERT INTO h3_indexes VALUES (55,595028608888602623,5);
|
||||
INSERT INTO h3_indexes VALUES (56,595028608888602623,6);
|
||||
INSERT INTO h3_indexes VALUES (57,595028608888602623,7);
|
||||
INSERT INTO h3_indexes VALUES (58,595028608888602623,8);
|
||||
INSERT INTO h3_indexes VALUES (59,595028608888602623,9);
|
||||
INSERT INTO h3_indexes VALUES (60,595028608888602623,10);
|
||||
INSERT INTO h3_indexes VALUES (61,595028608888602623,11);
|
||||
INSERT INTO h3_indexes VALUES (62,595028608888602623,12);
|
||||
INSERT INTO h3_indexes VALUES (63,595028608888602623,13);
|
||||
INSERT INTO h3_indexes VALUES (64,595028608888602623,14);
|
||||
INSERT INTO h3_indexes VALUES (65,595028608888602623,15);
|
||||
INSERT INTO h3_indexes VALUES (66,599532206368489471,6);
|
||||
INSERT INTO h3_indexes VALUES (67,599532206368489471,7);
|
||||
INSERT INTO h3_indexes VALUES (68,599532206368489471,8);
|
||||
INSERT INTO h3_indexes VALUES (69,599532206368489471,9);
|
||||
INSERT INTO h3_indexes VALUES (70,599532206368489471,10);
|
||||
INSERT INTO h3_indexes VALUES (71,599532206368489471,11);
|
||||
INSERT INTO h3_indexes VALUES (72,599532206368489471,12);
|
||||
INSERT INTO h3_indexes VALUES (73,599532206368489471,13);
|
||||
INSERT INTO h3_indexes VALUES (74,599532206368489471,14);
|
||||
INSERT INTO h3_indexes VALUES (75,599532206368489471,15);
|
||||
INSERT INTO h3_indexes VALUES (76,604035805861642239,7);
|
||||
INSERT INTO h3_indexes VALUES (77,604035805861642239,8);
|
||||
INSERT INTO h3_indexes VALUES (78,604035805861642239,9);
|
||||
INSERT INTO h3_indexes VALUES (79,604035805861642239,10);
|
||||
INSERT INTO h3_indexes VALUES (80,604035805861642239,11);
|
||||
INSERT INTO h3_indexes VALUES (81,604035805861642239,12);
|
||||
INSERT INTO h3_indexes VALUES (82,604035805861642239,13);
|
||||
INSERT INTO h3_indexes VALUES (83,604035805861642239,14);
|
||||
INSERT INTO h3_indexes VALUES (84,604035805861642239,15);
|
||||
INSERT INTO h3_indexes VALUES (85,608136739873095679,8);
|
||||
INSERT INTO h3_indexes VALUES (86,608136739873095679,9);
|
||||
INSERT INTO h3_indexes VALUES (87,608136739873095679,10);
|
||||
INSERT INTO h3_indexes VALUES (88,608136739873095679,11);
|
||||
INSERT INTO h3_indexes VALUES (89,608136739873095679,12);
|
||||
INSERT INTO h3_indexes VALUES (90,608136739873095679,13);
|
||||
INSERT INTO h3_indexes VALUES (91,608136739873095679,14);
|
||||
INSERT INTO h3_indexes VALUES (92,608136739873095679,15);
|
||||
INSERT INTO h3_indexes VALUES (93,612640339489980415,9);
|
||||
INSERT INTO h3_indexes VALUES (94,612640339489980415,10);
|
||||
INSERT INTO h3_indexes VALUES (95,612640339489980415,11);
|
||||
INSERT INTO h3_indexes VALUES (96,612640339489980415,12);
|
||||
INSERT INTO h3_indexes VALUES (97,612640339489980415,13);
|
||||
INSERT INTO h3_indexes VALUES (98,612640339489980415,14);
|
||||
INSERT INTO h3_indexes VALUES (99,612640339489980415,15);
|
||||
INSERT INTO h3_indexes VALUES (100,617143939115515903,10);
|
||||
INSERT INTO h3_indexes VALUES (101,617143939115515903,11);
|
||||
INSERT INTO h3_indexes VALUES (102,617143939115515903,12);
|
||||
INSERT INTO h3_indexes VALUES (103,617143939115515903,13);
|
||||
INSERT INTO h3_indexes VALUES (104,617143939115515903,14);
|
||||
INSERT INTO h3_indexes VALUES (105,617143939115515903,15);
|
||||
INSERT INTO h3_indexes VALUES (106,621647538742657023,11);
|
||||
INSERT INTO h3_indexes VALUES (107,621647538742657023,12);
|
||||
INSERT INTO h3_indexes VALUES (108,621647538742657023,13);
|
||||
INSERT INTO h3_indexes VALUES (109,621647538742657023,14);
|
||||
INSERT INTO h3_indexes VALUES (110,621647538742657023,15);
|
||||
INSERT INTO h3_indexes VALUES (111,626151138369998847,12);
|
||||
INSERT INTO h3_indexes VALUES (112,626151138369998847,13);
|
||||
INSERT INTO h3_indexes VALUES (113,626151138369998847,14);
|
||||
INSERT INTO h3_indexes VALUES (114,626151138369998847,15);
|
||||
INSERT INTO h3_indexes VALUES (115,630654737997365759,13);
|
||||
INSERT INTO h3_indexes VALUES (116,630654737997365759,14);
|
||||
INSERT INTO h3_indexes VALUES (117,630654737997365759,15);
|
||||
INSERT INTO h3_indexes VALUES (118,635158337624735807,14);
|
||||
INSERT INTO h3_indexes VALUES (119,635158337624735807,15);
|
||||
INSERT INTO h3_indexes VALUES (120,639661937252106247,15);
|
||||
|
||||
|
||||
SELECT h3ToCenterChild(h3_index,res) FROM h3_indexes ORDER BY id;
|
||||
|
||||
DROP TABLE h3_indexes;
|
||||
Loading…
Reference in New Issue
Block a user