HST_feat_meanderiv.m

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%This file is part of TEAP.
%
%TEAP 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.
%
%TEAP 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.
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%You should have received a copy of the GNU General Public License
%along with TEAP.  If not, see <http://www.gnu.org/licenses/>.
% 
%> @file HST_feat_meanderiv.m
%> @brief Computes the mean derivation of the HST signal.
%> @author Copyright Frank Villaro-Dixon, 2014
% 
%> @param HSTsignal the HST signal.
%> @retval meanTemp the mean derivation of the temperature, in d°C/dt (= dK/dt)
 
function [meanTemp] = HST_feat_meanderiv(HSTsignal)
 
%Make sure we have a HST signal
HSTsignal = HST__assert_type(HSTsignal);
 
if(~Signal__has_preproc_lowpass(HSTsignal))
    warning(['For the function to work well, you should low-pass the signal' ...
             '. Preferably with a mean filter']);
end
 
raw = Signal__get_raw(HSTsignal);
 
meanTemp = mean(diff(raw));