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KJB
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KJB
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interface for low-level NED reader functions More...
#include <l_cpp/l_exception.h>#include <m_cpp/m_matrix.h>#include <topo_cpp/layer.h>#include <string>#include <deque>#include <vector>#include <algorithm>#include <utility>#include <boost/scoped_ptr.hpp>Go to the source code of this file.
Classes | |
| class | kjb::Ned13_one_degree_grid |
| storage for a single NED13 grid tile, plus convenient access. More... | |
| struct | kjb::Ned13_one_degree_grid::IntegralLL |
| integer-valued, latitude-style and longitude-style coordinates More... | |
| class | kjb::Ned13_grid_cache |
| This caches a bunch (potentially) of one-degree grids for you. More... | |
| struct | kjb::Ned13_caching_reader |
| interface to an elevation-info object that caches its NED13 grids More... | |
| struct | kjb::Ned13_nearest_se_neighbor_reader |
| support NED 13 elevation queries by using nearest southeast neighbor More... | |
| struct | kjb::Ned13_bilinear_reader |
| support NED 13 elevation queries using bilinear interpolation More... | |
| struct | kjb::Ned13_gp_reader |
Namespaces | |
| kjb | |
| Classes and functions for dealing with trajectory files. | |
| std | |
Functions | |
| double | kjb::delta_e_meters (const Ned13_one_degree_grid::IntegralLL &) |
| distance, in meters, of the next grid point to the east More... | |
| double | kjb::delta_n_meters (const Ned13_one_degree_grid::IntegralLL &) |
| distance, in meters, of the next grid point to the north More... | |
| std::pair< double, double > | kjb::delta_n_e_meters (const Ned13_one_degree_grid::IntegralLL &) |
| distances, in meters, of next grid pt north (first), east (second) More... | |
| TopoFusion::pt | kjb::ned13_ill_to_utm (const Ned13_one_degree_grid::IntegralLL &) |
| convert to UTM coordinates (no elevation) More... | |
| GILL | kjb::utm_to_se_ned13_ill (const TopoFusion::pt &p) |
| convert from UTM coord to grid location, truncating to the southeast More... | |
| bool | kjb::operator== (const Ned13_one_degree_grid::IntegralLL &p, const Ned13_one_degree_grid::IntegralLL &q) |
| test two coordinate locations for equality More... | |
| bool | kjb::operator< (const kjb::Ned13_one_degree_grid::IntegralLL &p, const kjb::Ned13_one_degree_grid::IntegralLL &q) |
| impose an order on coordinate locations (geographically silly). More... | |
| Ned13_one_degree_grid::IntegralLL | kjb::round_nw_to_whole_degrees (const Ned13_one_degree_grid::IntegralLL &) |
| int | kjb::ned13_grid (const TopoFusion::pt ¢er, Matrix *elev_o, Matrix *elev_de_o, Matrix *elev_dn_o, int eastwest_size_meters=2000, int northsouth_size_meters=2000, int resolution_meters=1, Ned13_caching_reader *cache=0, const std::vector< std::string > &path=std::vector< std::string >()) |
| generate a grid describing an elevation model near some location More... | |
| Matrix | kjb::ned13_grid (const TopoFusion::pt ¢er, int eastwest_size_meters=2000, int northsouth_size_meters=2000, int resolution_meters=1, Ned13_caching_reader *cache=0, const std::vector< std::string > &path=std::vector< std::string >()) |
| generate a grid of elevation values between points at a location More... | |
| TopoFusion::pt | kjb::dem_to_doq_displacement (const TopoFusion::pt &dem_p) |
| return correction factor between DEM and DOQ coordinate systems. More... | |
| void | kjb::set_spy_filename (const std::string &) |
| TopoFusion::pt | kjb::force_zone_to_this (const TopoFusion::pt &, char use_this_zone) |
| void | std::swap (kjb::Ned13_one_degree_grid &p, kjb::Ned13_one_degree_grid &q) |
interface for low-level NED reader functions
NED stands for the National Elevation Dataset, which is a family of GIS (Geographical Information Systems) databases of elevation data in the U.S.A., also known as a Digital Elevation Models (DEMs). There are a few NED databases, with different resolutions. The one used by FindTrails is NED13, which has one-third arcsecond resolution. NED13 data is available in grids that are approximately square, with an edge length of just over one degree. As of this writing, a number of such grids are located in /data_3/trails/ned_13as/original.
1.8.6