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annotate +grid/equidistant.m @ 1198:2924b3a9b921 feature/d2_compatible

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Add OpSet for fully compatible D2Variable, created from regular D2Variable by replacing d1 by first row of D1. Formal reduction by one order of accuracy at the boundary point.
author Martin Almquist <malmquist@stanford.edu>
date Fri, 16 Aug 2019 14:30:28 -0700
parents c3378418d49a
children
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c7b2f645101f Added classes and functions for Cartesian and equidistant grids.
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1 % Creates a cartesian grid of dimension length(m).
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2 % over the doman xlim, ylim, ...
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3 % Examples:
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4 % g = grid.equidistant([mx, my], xlim, ylim)
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5 % g = grid.equidistant([10, 15], {0,1}, {0,2})
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6 function g = equidistant(m, varargin)
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7 if length(m) ~= length(varargin)
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8 error('grid:equidistant:NonMatchingParameters','The number of provided dimensions do not match.')
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9 end
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11 for i = 1:length(m)
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12 if ~iscell(varargin{i}) || numel(varargin{i}) ~= 2
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13 error('grid:equidistant:InvalidLimits','The limits should be cell arrays with 2 elements.');
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14 end
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16 if varargin{i}{1} > varargin{i}{2}
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17 error('grid:equidistant:InvalidLimits','The elements of the limit must be increasing.');
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18 end
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19 end
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21 X = {};
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22 h = [];
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23 for i = 1:length(m)
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24 [X{i}, h(i)] = util.get_grid(varargin{i}{:},m(i));
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25 end
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27 g = grid.Cartesian(X{:});
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28 g.h = h;
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29 end