#include <GridGeoConstraint.h>
Public Types | |
enum | LatitudeSense { unknown_sense, normal, inverted } |
enum | Notation { unknown_notation, pos, neg_pos } |
Public Member Functions | |
virtual void | apply_constraint_to_data () |
virtual Grid * | get_constrained_grid () const |
void | set_bounding_box (double left, double top, double right, double bottom) |
virtual | ~GridGeoConstraint () |
Accessors/Mutators | |
char * | get_array_data () const |
int | get_array_data_size () const |
bool | get_bounding_box_set () const |
set< string > | get_coards_lat_units () const |
set< string > | get_coards_lon_units () const |
double * | get_lat () const |
Array::Dim_iter | get_lat_dim () const |
int | get_lat_length () const |
set< string > | get_lat_names () const |
int | get_latitude_index_bottom () const |
int | get_latitude_index_top () const |
LatitudeSense | get_latitude_sense () const |
double * | get_lon () const |
Array::Dim_iter | get_lon_dim () const |
int | get_lon_length () const |
set< string > | get_lon_names () const |
int | get_longitude_index_left () const |
int | get_longitude_index_right () const |
Notation | get_longitude_notation () const |
bool | get_longitude_rightmost () const |
void | set_lat (double *lat) |
void | set_lat_dim (Array::Dim_iter lat) |
void | set_lat_length (int len) |
void | set_latitude_index_bottom (int bottom) |
void | set_latitude_index_top (int top) |
void | set_latitude_sense (LatitudeSense l) |
void | set_lon (double *lon) |
void | set_lon_dim (Array::Dim_iter lon) |
void | set_lon_length (int len) |
void | set_longitude_index_left (int left) |
void | set_longitude_index_right (int right) |
void | set_longitude_notation (Notation n) |
void | set_longitude_rightmost (bool state) |
Constructors | |
GridGeoConstraint (Grid *grid) | |
Initialize GeoConstraint with a Grid. | |
Protected Member Functions | |
virtual LatitudeSense | categorize_latitude () const |
Notation | categorize_notation (double left, double right) const |
void | find_latitude_indeces (double top, double bottom, LatitudeSense sense, int &latitude_index_top, int &latitude_index_bottom) const |
void | find_longitude_indeces (double left, double right, int &longitude_index_left, int &longitude_index_right) const |
virtual bool | is_bounding_box_valid (double left, double top, double right, double bottom) const |
virtual void | reorder_data_longitude_axis (Array &a) |
virtual void | reorder_longitude_map (int longitude_index_left) |
void | transform_constraint_to_pos_notation (double &left, double &right) const |
virtual void | transform_longitude_to_neg_pos_notation () |
virtual void | transform_longitude_to_pos_notation () |
Friends | |
class | GridGeoConstraintTest |
Definition at line 48 of file GridGeoConstraint.h.
enum libdap::GeoConstraint::LatitudeSense [inherited] |
Most of the time, latitude starts at the top of an array with positive values and ends up at the bottom with negative ones. But sometimes... the world is upside down.
Definition at line 118 of file GeoConstraint.h.
enum libdap::GeoConstraint::Notation [inherited] |
The longitude extents of the constraint bounding box can be expressed two ways: using a 0/359 notation and using a -180/179 notation. I call the 0/359 notation 'pos' and the -180/179 notation 'neg_pos'.
Definition at line 109 of file GeoConstraint.h.
libdap::GridGeoConstraint::GridGeoConstraint | ( | Grid * | grid | ) |
grid | Set the GeoConstraint to use this Grid variable. It is the caller's responsibility to ensure that the value grid is a valid Grid variable. | |
ds_name | The name of the dataset. Passed to BaseType::read(). |
Definition at line 65 of file GridGeoConstraint.cc.
References libdap::Array::dimensions(), libdap::Grid::get_array(), and libdap::BaseType::name().
virtual libdap::GridGeoConstraint::~GridGeoConstraint | ( | ) | [inline, virtual] |
Definition at line 69 of file GridGeoConstraint.h.
void libdap::GridGeoConstraint::apply_constraint_to_data | ( | ) | [virtual] |
Once the bounding box is set use this method to apply the constraint. This modifies the data values in the Grid so that the software in Vector::serialize() will work correctly. Vector::serialize() assumes that the BaseType::read() method is called after the projection is applied to the data. That is, the projection is applied, then data are read. but geogrid() first reads all the data values and then computes the projection. To make Vector::serialize() work, this method uses the projection information recorded in the Grid by set_bounding_box() to arrange data so that the information to be sent is all that is held by the Grid. Call this after applying any 'Grid selection expressions' of the sort that can be passed to the grid() function.
Implements libdap::GeoConstraint.
Definition at line 205 of file GridGeoConstraint.cc.
References libdap::Array::add_constraint(), libdap::Array::dim_begin(), libdap::Grid::get_array(), libdap::GeoConstraint::get_array_data(), libdap::GeoConstraint::get_array_data_size(), libdap::GeoConstraint::get_bounding_box_set(), libdap::GeoConstraint::get_lat(), libdap::GeoConstraint::get_lat_dim(), libdap::GeoConstraint::get_latitude_index_bottom(), libdap::GeoConstraint::get_latitude_index_top(), libdap::GeoConstraint::get_latitude_sense(), libdap::GeoConstraint::get_lon(), libdap::GeoConstraint::get_lon_dim(), libdap::GeoConstraint::get_lon_length(), libdap::GeoConstraint::get_longitude_index_left(), libdap::GeoConstraint::get_longitude_index_right(), libdap::GeoConstraint::get_longitude_notation(), libdap::GeoConstraint::inverted, libdap::GeoConstraint::neg_pos, libdap::BaseType::read(), libdap::GeoConstraint::reorder_data_longitude_axis(), libdap::GeoConstraint::reorder_longitude_map(), libdap::set_array_using_double(), libdap::GeoConstraint::set_latitude_index_bottom(), libdap::GeoConstraint::set_latitude_index_top(), libdap::GeoConstraint::set_longitude_index_left(), libdap::GeoConstraint::set_longitude_index_right(), libdap::Grid::set_read_p(), libdap::GeoConstraint::transform_longitude_to_neg_pos_notation(), and libdap::Vector::val2buf().
Referenced by libdap::function_geogrid().
GeoConstraint::LatitudeSense libdap::GeoConstraint::categorize_latitude | ( | ) | const [protected, virtual, inherited] |
Take a look at the latitude vector values and record whether the world is normal or upside down.
Definition at line 315 of file GeoConstraint.cc.
References libdap::GeoConstraint::inverted, and libdap::GeoConstraint::normal.
Referenced by libdap::GeoConstraint::set_bounding_box().
GeoConstraint::Notation libdap::GeoConstraint::categorize_notation | ( | double | left, | |
double | right | |||
) | const [protected, inherited] |
A private method that determines if the longitude part of the bounding box uses 0/359 or -180/179 notation. This class only supports latitude constriants which use 90/-90 notation, so there's no need to figure out what sort of notation they use.
left | The left side of the bounding box, in degrees | |
right | The right side of the boubding box |
Definition at line 109 of file GeoConstraint.cc.
References libdap::GeoConstraint::neg_pos, and libdap::GeoConstraint::pos.
Referenced by libdap::GeoConstraint::set_bounding_box().
void libdap::GeoConstraint::find_latitude_indeces | ( | double | top, | |
double | bottom, | |||
LatitudeSense | sense, | |||
int & | latitude_index_top, | |||
int & | latitude_index_bottom | |||
) | const [protected, inherited] |
Scan from the top to the bottom, and the bottom to the top, looking for the top and bottom bounding box edges, respectively.
top | The top edge of the bounding box | |
bottom | The bottom edge | |
sense | Does the array/grid store data with larger latitudes at the starting indices or are the latitude 'upside down?' | |
latitude_index_top | Value-result parameter that holds the index in the grid's latitude map of the top bounding box edge. Uses a closed interval for the test. | |
latitude_index_bottom | Value-result parameter for the bottom edge index. |
Definition at line 272 of file GeoConstraint.cc.
References libdap::GeoConstraint::normal.
Referenced by libdap::GeoConstraint::set_bounding_box().
void libdap::GeoConstraint::find_longitude_indeces | ( | double | left, | |
double | right, | |||
int & | longitude_index_left, | |||
int & | longitude_index_right | |||
) | const [protected, inherited] |
Scan from the left to the right, and the right to the left, looking for the left and right bounding box edges, respectively.
left | The left edge of the bounding box | |
right | The right edge | |
longitude_index_left | Value-result parameter that holds the index in the grid's longitude map of the left bounding box edge. Uses a closed interval for the test. | |
longitude_index_right | Value-result parameter for the right edge index. |
Definition at line 182 of file GeoConstraint.cc.
References DBG2.
Referenced by libdap::GeoConstraint::set_bounding_box().
char* libdap::GeoConstraint::get_array_data | ( | ) | const [inline, inherited] |
Definition at line 224 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
int libdap::GeoConstraint::get_array_data_size | ( | ) | const [inline, inherited] |
Definition at line 228 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
bool libdap::GeoConstraint::get_bounding_box_set | ( | ) | const [inline, inherited] |
Definition at line 319 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
set<string> libdap::GeoConstraint::get_coards_lat_units | ( | ) | const [inline, inherited] |
Definition at line 349 of file GeoConstraint.h.
set<string> libdap::GeoConstraint::get_coards_lon_units | ( | ) | const [inline, inherited] |
Definition at line 353 of file GeoConstraint.h.
virtual Grid* libdap::GridGeoConstraint::get_constrained_grid | ( | ) | const [inline, virtual] |
double* libdap::GeoConstraint::get_lat | ( | ) | const [inline, inherited] |
Array::Dim_iter libdap::GeoConstraint::get_lat_dim | ( | ) | const [inline, inherited] |
Definition at line 271 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
int libdap::GeoConstraint::get_lat_length | ( | ) | const [inline, inherited] |
Definition at line 250 of file GeoConstraint.h.
set<string> libdap::GeoConstraint::get_lat_names | ( | ) | const [inline, inherited] |
Definition at line 358 of file GeoConstraint.h.
int libdap::GeoConstraint::get_latitude_index_bottom | ( | ) | const [inline, inherited] |
Definition at line 289 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
int libdap::GeoConstraint::get_latitude_index_top | ( | ) | const [inline, inherited] |
Definition at line 285 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
LatitudeSense libdap::GeoConstraint::get_latitude_sense | ( | ) | const [inline, inherited] |
Definition at line 336 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
double* libdap::GeoConstraint::get_lon | ( | ) | const [inline, inherited] |
Array::Dim_iter libdap::GeoConstraint::get_lon_dim | ( | ) | const [inline, inherited] |
Definition at line 267 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
int libdap::GeoConstraint::get_lon_length | ( | ) | const [inline, inherited] |
Definition at line 254 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), libdap::ArrayGeoConstraint::apply_constraint_to_data(), and libdap::GeoConstraint::reorder_data_longitude_axis().
set<string> libdap::GeoConstraint::get_lon_names | ( | ) | const [inline, inherited] |
Definition at line 362 of file GeoConstraint.h.
int libdap::GeoConstraint::get_longitude_index_left | ( | ) | const [inline, inherited] |
Definition at line 302 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), libdap::ArrayGeoConstraint::apply_constraint_to_data(), and libdap::GeoConstraint::reorder_data_longitude_axis().
int libdap::GeoConstraint::get_longitude_index_right | ( | ) | const [inline, inherited] |
Definition at line 306 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), libdap::ArrayGeoConstraint::apply_constraint_to_data(), and libdap::GeoConstraint::reorder_data_longitude_axis().
Notation libdap::GeoConstraint::get_longitude_notation | ( | ) | const [inline, inherited] |
bool libdap::GeoConstraint::get_longitude_rightmost | ( | ) | const [inline, inherited] |
Definition at line 323 of file GeoConstraint.h.
Referenced by libdap::GeoConstraint::reorder_data_longitude_axis().
bool libdap::GeoConstraint::is_bounding_box_valid | ( | double | left, | |
double | top, | |||
double | right, | |||
double | bottom | |||
) | const [protected, virtual, inherited] |
Definition at line 150 of file GeoConstraint.cc.
References libdap::GeoConstraint::normal.
Referenced by libdap::GeoConstraint::set_bounding_box().
void libdap::GeoConstraint::reorder_data_longitude_axis | ( | Array & | a | ) | [protected, virtual, inherited] |
Reorder the data values relative to the longitude axis so that the reordered longitude map (see GeoConstraint::reorder_longitude_map()) and the data values match.
First set all the other constraints, including the latitude and then make this call. Other constraints, besides latitude, will be simple range constraints. Latitude might require that values be inverted, but that can be done _after_ the longitude reordering takes place. The latitude constraint can be imposed by inverting the top and bottom indices if the sense of the grid is inverted, before data are read in this method. Then apply the longitude constraint, then invert the result of the merge, if needed.
Definition at line 400 of file GeoConstraint.cc.
References libdap::Array::add_constraint(), libdap::Vector::buf2val(), DBG, DBG2, libdap::GeoConstraint::get_lon_length(), libdap::GeoConstraint::get_longitude_index_left(), libdap::GeoConstraint::get_longitude_index_right(), libdap::GeoConstraint::get_longitude_rightmost(), libdap::Vector::length(), libdap::Array::print_val(), libdap::BaseType::read(), libdap::Vector::set_read_p(), libdap::Vector::value(), libdap::Vector::var(), and libdap::BaseType::width().
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
void libdap::GeoConstraint::reorder_longitude_map | ( | int | longitude_index_left | ) | [protected, virtual, inherited] |
Reorder the elements in the longitude map so that the longitude constraint no longer crosses the edge of the map's storage. The d_lon field is modified.
longitude_index_left | The left edge of the bounding box. |
Definition at line 360 of file GeoConstraint.cc.
Referenced by apply_constraint_to_data().
void libdap::GeoConstraint::set_bounding_box | ( | double | left, | |
double | top, | |||
double | right, | |||
double | bottom | |||
) | [inherited] |
Set the bounding box for this constraint. After calling this method the object has values for the indexes for the latitude and longitude extent as well as the sense of the latitude (south pole at the top or bottom of the Array or Grid). These are used by the apply_constraint_to_data() method to actually constrain the data.
left | The left side of the bounding box. | |
right | The right side | |
top | The top | |
bottom | The bottom |
Definition at line 549 of file GeoConstraint.cc.
References libdap::GeoConstraint::categorize_latitude(), libdap::GeoConstraint::categorize_notation(), DBG, libdap::double_to_string(), libdap::GeoConstraint::find_latitude_indeces(), libdap::GeoConstraint::find_longitude_indeces(), libdap::GeoConstraint::is_bounding_box_valid(), libdap::GeoConstraint::neg_pos, libdap::GeoConstraint::transform_constraint_to_pos_notation(), and libdap::GeoConstraint::transform_longitude_to_pos_notation().
Referenced by libdap::function_geoarray(), and libdap::function_geogrid().
void libdap::GeoConstraint::set_lat | ( | double * | lat | ) | [inline, inherited] |
Definition at line 241 of file GeoConstraint.h.
void libdap::GeoConstraint::set_lat_dim | ( | Array::Dim_iter | lat | ) | [inline, inherited] |
Definition at line 279 of file GeoConstraint.h.
void libdap::GeoConstraint::set_lat_length | ( | int | len | ) | [inline, inherited] |
Definition at line 258 of file GeoConstraint.h.
void libdap::GeoConstraint::set_latitude_index_bottom | ( | int | bottom | ) | [inline, inherited] |
Definition at line 297 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
void libdap::GeoConstraint::set_latitude_index_top | ( | int | top | ) | [inline, inherited] |
Definition at line 293 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
void libdap::GeoConstraint::set_latitude_sense | ( | LatitudeSense | l | ) | [inline, inherited] |
Definition at line 344 of file GeoConstraint.h.
void libdap::GeoConstraint::set_lon | ( | double * | lon | ) | [inline, inherited] |
Definition at line 245 of file GeoConstraint.h.
void libdap::GeoConstraint::set_lon_dim | ( | Array::Dim_iter | lon | ) | [inline, inherited] |
Definition at line 275 of file GeoConstraint.h.
void libdap::GeoConstraint::set_lon_length | ( | int | len | ) | [inline, inherited] |
Definition at line 262 of file GeoConstraint.h.
void libdap::GeoConstraint::set_longitude_index_left | ( | int | left | ) | [inline, inherited] |
Definition at line 310 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
void libdap::GeoConstraint::set_longitude_index_right | ( | int | right | ) | [inline, inherited] |
Definition at line 314 of file GeoConstraint.h.
Referenced by apply_constraint_to_data(), and libdap::ArrayGeoConstraint::apply_constraint_to_data().
void libdap::GeoConstraint::set_longitude_notation | ( | Notation | n | ) | [inline, inherited] |
Definition at line 340 of file GeoConstraint.h.
void libdap::GeoConstraint::set_longitude_rightmost | ( | bool | state | ) | [inline, inherited] |
Definition at line 327 of file GeoConstraint.h.
void libdap::GeoConstraint::transform_constraint_to_pos_notation | ( | double & | left, | |
double & | right | |||
) | const [protected, inherited] |
Definition at line 120 of file GeoConstraint.cc.
Referenced by libdap::GeoConstraint::set_bounding_box().
void libdap::GeoConstraint::transform_longitude_to_neg_pos_notation | ( | ) | [protected, virtual, inherited] |
Given that the Grid has a longitude map that uses the 'pos' notation, transform it to the 'neg_pos' notation. This method modifies the d_longitude Array.
Definition at line 144 of file GeoConstraint.cc.
Referenced by apply_constraint_to_data().
void libdap::GeoConstraint::transform_longitude_to_pos_notation | ( | ) | [protected, virtual, inherited] |
Given that the Grid has a longitude map that uses the 'neg_pos' notation, transform it to the 'pos' notation. This method modifies the d_longitude Array.
Definition at line 132 of file GeoConstraint.cc.
Referenced by libdap::GeoConstraint::set_bounding_box().
friend class GridGeoConstraintTest [friend] |