类 OneDimDistance

定义于文件 OneDimDistance.h

嵌套关系

嵌套类型

结构体 OneDimDistance::Parameter

继承关系

基类

public gwm::Distance (类 Distance)

类文档

class OneDimDistance : public gwm::Distance 

Class for calculating spatial distance according to coordinate reference system.

公有成员函数

OneDimDistance()

explicit OneDimDistance(bool isGeographic)

Construct a new OneDimDistance object

参数: isGeographic – Whether the coordinate reference system is geographical.

OneDimDistance(const OneDimDistance &distance)

Construct a new OneDimDistance object.

参数: distance – Refernce to object for copying.

inline virtual Distance *clone() override

克隆这个 Distance 对象。

返回: Distance* 重新创建的对象指针

inline virtual DistanceType type() override

返回该对象的类型。

返回: DistanceType 距离陆良类型

virtual void makeParameter(std::initializer_list<DistParamVariant> plist) override

Create Parameter for Caclulating CRS Distance.

参数

plist – A list of parameters containing 2 items:

arma::vec focus coordinates (one column)
arma::vec data coordinates (one column)

返回

DistanceParameter* The pointer to parameters.

virtual arma::vec distance(arma::uword focus) override

为一个目标点计算距离向量。

参数: focus – 目标点索引，要求 focus 小于参数中的 total
返回: arma::vec 目标点到所有数据点的距离向量

virtual double maxDistance() override

获取最大距离。

返回: double 最大距离

virtual double minDistance() override

获取最小距离。

返回: double 最小距离

公有静态方法

static inline arma::vec AbstractDistance(const double &out_loc, const arma::vec &in_locs)

Calculate spatial distance for points with geographical coordinate reference system.

参数

out_loc – Matrix of focus point’ coordinate. The shape of it must be 1x2 and the first column is longitudes, the second column is latitudes.
in_locs – Matrix of data points’ coordinates. The shape of it must be nx2 and the first column is longitudes, the second column is latitudes.

返回

arma::vec Distance vector for out_loc.

保护属性

std::unique_ptr<Parameter> mParameter = nullptr

struct Parameter : public gwm::Distance::Parameter 

Struct of parameters used in spatial distance calculating according to coordinate reference system. Usually a pointer to object of this class is passed to OneDimDistance::distance().

公有成员函数

inline Parameter(const arma::vec &fp, const arma::vec &dp)

Construct a new OneDimDistanceParameter object.

参数

fp – Reference to focus points.
dp – Reference to data points.

公有成员

arma::vec focusPoints: Matrix of focus points’ coordinates. The shape of it must be nx2 and the first column is longitudes or x-coordinate, the second column is latitudes or y-coordinate.

arma::vec dataPoints: Matrix of data points’ coordinates. The shape of it must be nx2 and the first column is longitudes or x-coordinate, the second column is latitudes or y-coordinate.