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libgeoda.h
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libgeoda.h
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#ifndef LIBGEODA_LIBRARY_H
#define LIBGEODA_LIBRARY_H
#ifdef __MSVC__
#include <Windows.h>
#include <Psapi.h>
#endif
#include <list>
#include <vector>
#include <algorithm>
#include <map>
#include "./pg/geoms.h"
#include "gda_interface.h"
// forward declaration
class GeoDaColumn {
public:
enum FieldType { integer_type, string_type, real_type };
std::string name;
FieldType field_type;
int field_length;
int field_decimals;
std::vector<bool> undefs;
GeoDaColumn(const std::string& nm, FieldType ft, int flen, int fdec)
: name(nm), field_type(ft), field_length(flen), field_decimals(fdec) {}
virtual ~GeoDaColumn() {}
};
class GeoDaIntColumn : public GeoDaColumn {
public:
std::vector<long long> data;
virtual std::vector<long long>& GetData() { return data;}
virtual void SetData(const std::vector<long long>& vals) { data = vals; }
GeoDaIntColumn(const std::string& nm, const std::vector<long long>& vals)
: GeoDaColumn(nm, integer_type, 20, 0), data(vals) {}
};
class GeoDaStringColumn : public GeoDaColumn {
public:
std::vector<std::string> data;
virtual std::vector<std::string>& GetData() { return data;}
virtual void SetData(const std::vector<std::string>& vals) { data = vals; }
GeoDaStringColumn(const std::string& nm, const std::vector<std::string>& vals)
: GeoDaColumn(nm, string_type, 254, 0), data(vals) {}
};
class GeoDaRealColumn : public GeoDaColumn {
public:
std::vector<double> data;
virtual std::vector<double>& GetData() { return data;}
virtual void SetData(const std::vector<double>& vals) { data = vals; }
GeoDaRealColumn(const std::string& nm, const std::vector<double>& vals)
: GeoDaColumn(nm, real_type, 35, 15), data(vals) {}
};
class GeoDaTable {
public:
GeoDaTable(){};
virtual ~GeoDaTable(){};
void AddIntColumn(const std::string& nm,
const std::vector<long long>& vals,
const std::vector<bool>& undefs=std::vector<bool>()) {
GeoDaColumn* col = new GeoDaIntColumn(nm, vals);
col->undefs = undefs;
columns.push_back(col);
}
void AddStringColumn(const std::string& nm,
const std::vector<std::string>& vals,
const std::vector<bool>& undefs=std::vector<bool>()) {
GeoDaColumn* col = new GeoDaStringColumn(nm, vals);
col->undefs = undefs;
columns.push_back(col);
}
void AddRealColumn(const std::string& nm,
const std::vector<double>& vals,
const std::vector<bool>& undefs=std::vector<bool>()) {
GeoDaColumn* col = new GeoDaRealColumn(nm, vals);
col->undefs = undefs;
columns.push_back(col);
}
GeoDaColumn* GetColumn(const std::string& col_name) {
for (size_t i=0; i<columns.size(); ++i) {
if (col_name.compare(columns[i]->name) == 0) {
return columns[i];
}
}
return 0;
}
GeoDaColumn* GetColumn(int idx) {return columns[idx];}
int GetNumCols() { return columns.size(); }
protected:
std::vector<GeoDaColumn*> columns;
};
class GeoDa : public AbstractGeoDa {
public:
enum MapType { point_type, polygon_type, line_type, unknown_type };
// this constructor is for Python
GeoDa(GeoDaTable* table, const std::string& layer_name,
const std::string& map_type,
const std::vector<unsigned char> &wkbs,
const std::vector<int>& wkb_bytes_len);
// this constructor is for R
GeoDa(GeoDaTable* table, const std::string& layer_name,
const std::string& map_type,
int num_features,
unsigned char* wkbs,
const std::vector<int>& wkb_bytes_len);
//GeoDa(GeoDaTable* table, const std::string& layer_name,
// const std::string& map_type,
// int num_features,
// const std::vector<double>& bbox,
// const std::vector<std::vector<double> >& geoms);
// this constructor is for ESRI Shapefile
GeoDa(const char* pDsPath, const char* layer_name=NULL);
virtual ~GeoDa();
// interfaces from AbstractGeoDa
virtual int GetNumObs() const;
virtual const std::vector<gda::PointContents*>& GetCentroids();
virtual int GetMapType();
virtual std::string GetMapTypeName();
virtual gda::MainMap& GetMainMap();
// Layer functions
int GetNumCols() const;
std::vector<std::string> GetFieldTypes();
std::vector<std::string> GetFieldNames();
// Data functions
std::vector<double> GetNumericCol(std::string col_name);
std::vector<long long> GetIntegerCol(std::string col_name);
std::vector<std::string> GetStringCol(std::string col_name);
std::vector<bool> GetNullValues(std::string col_name);
protected:
void AddPoint(LWPOINT* lw_pt);
void AddMultiPoint( LWMPOINT* lw_mpt);
void AddPolygon( LWPOLY* lw_poly);
void AddMultiPolygon( LWMPOLY* lw_mpoly);
void AddNullGeometry();
void ReadShapefile(const char* fpath);
void ReadDbffile(const char* fpath);
// reserved for working with GDAL
void ReadAllFeatures();
void Init(const std::string& layer_name,
const std::string& map_type,
int num_features,
unsigned char* wkbs,
const std::vector<int>& wkb_bytes_len);
static const std::string DT_STRING;
static const std::string DT_INTEGER;
static const std::string DT_NUMERIC;
MapType mapType;
int numLayers;
int numObs;
int numCols;
GeoDaTable* table;
std::vector<std::string> fieldNames;
std::vector<std::string> fieldTypes;
std::map<std::string, unsigned int> fieldNameIdx;
std::vector<gda::PointContents*> centroids;
gda::MainMap* main_map;
};
int test();
GeoDaColumn* ToGeoDaColumn(GeoDaStringColumn* col);
GeoDaColumn* ToGeoDaColumn(GeoDaIntColumn* col);
GeoDaColumn* ToGeoDaColumn(GeoDaRealColumn* col);
GeoDa* CreateGeoDaFromGPD(const std::string& layer_name,
const std::string& map_type,
const std::vector<unsigned char> &wkbs,
const std::vector<int>& wkb_bytes_len);
GeoDa* CreateGeoDaFromSHP(const char* pDsPath, const char* layer_name=NULL);
#endif