Fix. Default password should be [] not an empty string
line source
+ − % DOWNSAMPLE AOs containing time-series data.
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ − %
+ − % DESCRIPTION: DOWNSAMPLE AOs containing time-series data. All other AOs with
+ − % no time-series data are skipped but appear in the output.
+ − % Note that no anti-aliasing filter is applied to the
+ − % original data!!!
+ − % CALL: b = downsample(a, pl) - use plist to get parameters
+ − % b = downsample(a1, a2, pl) - downsample both a1 and a2;
+ − % b is then a 2x1 vector.
+ − %
+ − % <a href="matlab:utils.helper.displayMethodInfo('ao', 'downsample')">Parameters Description</a>
+ − %
+ − % EXAMPLES: 1) downsample x4; offset is set to default of 0
+ − %
+ − % >> p = plist('factor',4);
+ − % >> b = downsample(a, p);
+ − %
+ − % 2) downsample x2 with 1 sample offset
+ − %
+ − % >> p = plist('factor',2,'offset',1);
+ − % >> b = downsample(a,p);
+ − %
+ − %
+ − % VERSION: $Id: downsample.m,v 1.34 2011/07/14 05:33:18 mauro Exp $
+ − %
+ − %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+ −
+ − function varargout = downsample(varargin)
+ −
+ − % Check if this is a call for parameters
+ − if utils.helper.isinfocall(varargin{:})
+ − varargout{1} = getInfo(varargin{3});
+ − return
+ − end
+ −
+ − import utils.const.*
+ − utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
+ −
+ − % Collect input variable names
+ − in_names = cell(size(varargin));
+ − for ii = 1:nargin,in_names{ii} = inputname(ii);end
+ −
+ − % Collect all AOs
+ − [as, ao_invars] = utils.helper.collect_objects(varargin(:), 'ao', in_names);
+ − [pl, pl_invars] = utils.helper.collect_objects(varargin(:), 'plist', in_names);
+ −
+ − % Decide on a deep copy or a modify
+ − bs = copy(as, nargout);
+ −
+ − % Combine plists
+ − pl = parse(pl, getDefaultPlist);
+ −
+ − % Get parameters from plist
+ − offset = find(pl, 'offset');
+ − factor = find(pl, 'factor');
+ −
+ − % Checking downsampling value is valid
+ − if isempty(factor)
+ − error('### Please give a plist with a parameter ''Factor''.');
+ − end
+ −
+ − % Checking downsampling value is integer
+ − if rem(factor, floor(factor)) ~= 0
+ − warning('!!! Downsample factor should be an integer. Rounding. !!!');
+ − factor = round(factor);
+ − end
+ −
+ − % Checking sample offset value
+ − if isempty(offset)
+ − warning('!!! No offset specified; using default of 0 samples !!!');
+ − offset = 0;
+ − end
+ −
+ − if factor == 0
+ − error('### The downsampling factor is zero. Please set a positive integer value.');
+ − end
+ −
+ − % Loop over input AOs
+ − for jj = 1:numel(bs)
+ − if isa(bs(jj).data, 'tsdata')
+ − % get samples
+ − ss = 1+offset;
+ − samples = ss:factor:length(bs(jj).data.y);
+ − % select samples
+ − bs(jj).data.setXY(bs(jj).data.getX(samples), bs(jj).data.getY(samples));
+ − % Set new sample rate
+ − bs(jj).data.setFs(bs(jj).data.fs/factor);
+ − % drop X vector again if we can
+ − bs(jj).data.collapseX;
+ − % set name
+ − bs(jj).name = sprintf('downsample(%s)', ao_invars{jj});
+ − % Add history
+ − bs(jj).addHistory(getInfo('None'), pl, ao_invars(jj), bs(jj).hist);
+ − % Clear the errors since they don't make sense anymore
+ − clearErrors(bs(jj));
+ − else
+ − warning('!!! Downsample only works on tsdata objects. Skipping AO %s', ao_invars{jj});
+ − end
+ − end
+ −
+ − % Set output
+ − varargout = utils.helper.setoutputs(nargout, bs);
+ − end
+ −
+ − %--------------------------------------------------------------------------
+ − % Get Info Object
+ − %--------------------------------------------------------------------------
+ − function ii = getInfo(varargin)
+ − if nargin == 1 && strcmpi(varargin{1}, 'None')
+ − sets = {};
+ − pl = [];
+ − else
+ − sets = {'Default'};
+ − pl = getDefaultPlist;
+ − end
+ − % Build info object
+ − ii = minfo(mfilename, 'ao', 'ltpda', utils.const.categories.sigproc, '$Id: downsample.m,v 1.34 2011/07/14 05:33:18 mauro Exp $', sets, pl);
+ − end
+ −
+ − %--------------------------------------------------------------------------
+ − % Get Default Plist
+ − %--------------------------------------------------------------------------
+ −
+ − function plout = getDefaultPlist()
+ − persistent pl;
+ − if ~exist('pl', 'var') || isempty(pl)
+ − pl = buildplist();
+ − end
+ − plout = pl;
+ − end
+ −
+ − function pl = buildplist()
+ −
+ − pl = plist();
+ −
+ − % Factor
+ − p = param({'factor', 'The decimation factor. Should be an integer.'}, {1, {1}, paramValue.OPTIONAL});
+ − pl.append(p);
+ −
+ − % Offset
+ − p = param({'offset', 'The sample offset used in the decimation.'}, {1, {0}, paramValue.OPTIONAL});
+ − pl.append(p);
+ −
+ − end
+ −
+ −