Diego Alvarez-Estevez
33 linhas
1.2 KiB
Matlab
33 linhas
1.2 KiB
Matlab
% Created by Diego Alvarez-Estevez (http://dalvarezestevez.com)
|
|
|
|
% LogFloat conversion (see www.edfplus.info/specs/edffloat.html for
|
|
% more information)
|
|
|
|
%% 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 <http://www.gnu.org/licenses/>.
|
|
|
|
function out = LogFloatVector(vector, Y0, A)
|
|
|
|
out = zeros(size(vector));
|
|
|
|
r = (log10(vector(vector > Y0)) - log10(Y0)) / A;
|
|
if not(isempty(r))
|
|
out(vector > Y0) = int16(round(min(r, intmax('int16'))));
|
|
end
|
|
|
|
r = (-log10((-1)*vector(vector < Y0)) + log10(Y0)) / A;
|
|
if not(isempty(r))
|
|
out(vector < Y0) = int16(round(max(r, -intmax('int16'))));
|
|
end
|
|
|
|
% Those with zero value at input remain zero at output |