Class CMProj4Grid extends CMProjector

CMProj4Grid

Projects data based on a grid. This class uses a URL to a Proj4 grid file as created
by the associated Python script. This file is used when the user just wants to specify
a single projection grid. Otherwise, CMProj4WebService should be used which inherits
from this class and allows various settings to be specified and a web service call will
then produce a new grid for those settings.


Copyright (C) 2020, Humboldt State University, Jim Graham

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see
.

Settings Group: Proj4Grid

Setting	Name	Type	Options	Default	Comments
URL	URL	CMTYPE_STRING		/Archive/ProjectionGrids/aea/lat_0=40/lat_1=60/Step=10/BB=-180_-90_180_90/

Settings Group: Projection

Setting	Name	Type	Options	Default	Comments
LongitudeOfOrigin	Longitude Of Origin	CMTYPE_FLOAT		0
DynamicBoundingBox	Dynamic Bounding Box	CMTYPE_BOUNDS		null

Object Functions

Inherited From: CMProjector

Returns	Function	Throws
an	GetClippingPolys()
	RequestGrid()
	RequestBackProjectionGrid()

Object Functions

an=GetClippingPolys()

Returns clipping bounds that can be used to clip geographic data for the current
projection settings

Returns: an - array of clipping polys [Xs[],Ys[]]

RequestGrid()

Requests a grid specified by a URL

RequestBackProjectionGrid()

Requests a grid specified by a URL