NHP-pRF/Toolboxes/matplotlib/twilight.m

function map = twilight(N)
% Perceptually uniform cyclic colormap from MatPlotLib.
%
% Copyright (c) 2015 Bastian Bechtold
% Copyright (c) 2017-2019 Stephen Cobeldick
%
%%% Syntax:
%  map = twilight
%  map = twilight(N)
%
% Colormap designed by Bastian Bechtold.
%
% Cyclic colormaps are designed for plotting data that repeats, therefore the
% colormap loops around (the first and last colors tend to the same color).
% Note that MatPlotLib's TWILIGHT_SHIFTED can be generated very easily:
% map = flipud(circshift(twilight(N),fix(N/2),1));
%
%% Examples %%
%
%%% Plot the scheme's RGB values:
% rgbplot(twilight(256))
%
%%% New colors for the COLORMAP example:
% load spine
% image(X)
% colormap(twilight)
%
%%% New colors for the SURF example:
% [X,Y,Z] = peaks(30);
% surfc(X,Y,Z)
% colormap(twilight)
% axis([-3,3,-3,3,-10,5])
%
%% Input and Output Arguments %%
%
%%% Inputs (*=default):
% N = NumericScalar, N>=0, an integer to define the colormap length.
%   = *[], use the length of the current figure's colormap (see COLORMAP).
%
%%% Outputs:
% map = NumericMatrix, size Nx3, a colormap of RGB values between 0 and 1.
%
% See also CIVIDIS INFERNO MAGMA PLASMA VIRIDIS TAB10 SET LINES COLORMAP PARULA

if nargin<1 || isempty(N)
	N = size(get(gcf,'colormap'),1);
else
	assert(isscalar(N)&&isreal(N),'First argument must be a real numeric scalar.')
end
%
raw = 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%
num = size(raw,1);
vec = linspace(1,num,N+1);
map = interp1(1:num,raw,vec(1:N),'spline');
% Range limits:
map = max(0,min(1,map));
%
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%twilight