pyarea.c File Reference

Python version of the Area API. More...

#include "pyravecompat.h"
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "pyrave_debug.h"
#include "pyarea.h"
#include "pyprojection.h"
#include "rave_alloc.h"

Macros
#define	PYAREA_MODULE
	to get correct part in pyarea.h
#define	raiseException_gotoTag(tag, type, msg)
	Sets a python exception and goto tag.
#define	raiseException_returnNULL(type, msg)
	Sets a python exception and return NULL.

Functions
	PYRAVE_DEBUG_MODULE ("_area")
	Debug this module.
	PyDoc_STRVAR (_pyarea_doc, "This class provides functionality for defining an area used in for example cartesian products.\n" "\n" "The area instance is used as a container for a number of attributes that are relevant when defining an area.\n" "Since this instance is used for defining areas it doesn't contain any methods. Instead there are only a number\n" "of members which are:\n\n" " * id - a string identifying this area definition.\n\n" " * description - a string description of this area.\n\n" " * xsize - a integer defining the xsize.\n\n" " * ysize - a integer defining the ysize.\n\n" " * xscale - a float defining the xscale in meters.\n\n" " * yscale - a float defining the yscale in meters.\n\n" " * extent - a tuple of four floats defining the extent of this area (lower left X, lower left Y, upper right X, upper right Y).\n\n" " * projection - the projection definition of type ProjectionCore. When setting this, the pcsid will be reset.\n\n" " * pcsid - the projection id string. When setting this, the projection will be reset.\n\n" "\n" "Usage us quite straight forward when using this class. However, usually, the area registry is used when creating areas.\n" " import _area, _projection, math\n" " a = _area.new()\n" " a.id = \"myid\"\n" " a.description = \"this is an area\"\n" " a.xsize = 100\n" " a.ysize = 100\n" " a.xscale = 1000.0\n" " a.yscale = 1000.0\n" " a.projection = _rave.projection(\"gnom\",\"gnom\",\"+proj=gnom +R=6371000.0 +lat_0=56.3675 +lon_0=12.8544\")\n" " xy = a.projection.fwd((12.8544*math.pi/180.0, 56.3675*math.pi/180.0)))\n" " a.extent = (xy[0] - 50*a.xscale, xy[1] - 50*a.yscale, xy[2] + 50*a.xscale, xy[3] + 50*a.yscale)\n")
	MOD_INIT (_area)

Variables
PyTypeObject	PyArea_Type

Detailed Description

Python version of the Area API.

Author

Anders Henja (Swedish Meteorological and Hydrological Institute, SMHI)

Date

2009-12-10

Macro Definition Documentation

PYAREA_MODULE

#define PYAREA_MODULE

to get correct part in pyarea.h

raiseException_gotoTag

#define raiseException_gotoTag	(		tag,
			type,
			msg )

Value:

{PyErr_SetString(type, msg); goto tag;}

Sets a python exception and goto tag.

raiseException_returnNULL

#define raiseException_returnNULL	(		type,
			msg )

Value:

{PyErr_SetString(type, msg); return NULL;}

Sets a python exception and return NULL.

Function Documentation

PYRAVE_DEBUG_MODULE()

PYRAVE_DEBUG_MODULE

(

"_area"

)

Debug this module.