1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/***********************************************/
/**
* @file gravityfield2AbsoluteGravity.cpp
*
* @brief Absolute gravity values on a grid.
*
* @author Torsten Mayer-Guerr
* @date 2011-10-29
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
This program computes the absolute value of gravity $\left\lVert{\M g}\right\rVert$
of a \configClass{gravityfield}{gravityfieldType} on a given \configClass{grid}{gridType}.
The result is multiplicated with \config{factor}.
To get the full gravity vector in a terrestrial frame add
the centrifugal part, see \configClass{gravityfield:tides:centrifugal}{tidesType:centrifugal}.
The values will be saved together with points expressed as ellipsoidal coordinates (longitude, latitude, height)
based on a reference ellipsoid with parameters \config{R} and \config{inverseFlattening}.
It is intended to compute gravity anomalies from absolute gravity observations.
To visualize the results use \program{PlotMap}.
)";
/***********************************************/
#include "programs/program.h"
#include "files/fileGriddedData.h"
#include "classes/grid/grid.h"
#include "classes/gravityfield/gravityfield.h"
#include "misc/miscGriddedData.h"
/***** CLASS ***********************************/
/** @brief Absolute gravity values on a grid.
* @ingroup programsGroup */
class Gravityfield2AbsoluteGravity
{
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(Gravityfield2AbsoluteGravity, PARALLEL, "Absolute gravity values on a grid.", Gravityfield)
/***********************************************/
void Gravityfield2AbsoluteGravity::run(Config &config, Parallel::CommunicatorPtr comm)
{
try
{
FileName outFileNameGrid;
GridPtr grid;
GravityfieldPtr gravityfield;
Double factor;
Time time;
Double a, f;
readConfig(config, "outputfileGriddedData", outFileNameGrid, Config::MUSTSET, "", "");
readConfig(config, "grid", grid, Config::MUSTSET, "", "");
readConfig(config, "gravityfield", gravityfield, Config::MUSTSET, "", "");
readConfig(config, "factor", factor, Config::DEFAULT, "1.0", "the result is multiplied by this factor, set -1 to subtract the field");
readConfig(config, "time", time, Config::OPTIONAL, "", "at this time the gravity field will be evaluated");
readConfig(config, "R", a, Config::DEFAULT, STRING_DEFAULT_GRS80_a, "reference radius for ellipsoidal coordinates on output");
readConfig(config, "inverseFlattening", f, Config::DEFAULT, STRING_DEFAULT_GRS80_f, "reference flattening for ellipsoidal coordinates on output, 0: spherical coordinates");
if(isCreateSchema(config)) return;
// create grid
// -----------
std::vector<Vector3d> points = grid->points();
std::vector<Double> areas = grid->areas();
// Create values on grid
// ---------------------
logStatus<<"create values on grid"<<Log::endl;
std::vector<Double> field(points.size());
Parallel::forEach(field, [&](UInt i){return factor*gravityfield->gravity(time, points.at(i)).r();}, comm);
if(Parallel::isMaster(comm))
{
// write results
// -------------
logStatus<<"save values to file <"<<outFileNameGrid<<">"<<Log::endl;
GriddedData griddedData(Ellipsoid(a,f), points, areas, {field});
writeFileGriddedData(outFileNameGrid, griddedData);
MiscGriddedData::printStatistics(griddedData);
} // Master
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
|
