131 lines
3.7 KiB
Matlab
131 lines
3.7 KiB
Matlab
function [freq, init, data, varlist] = load_xls_file_data(file, sheet, range)
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% Loads data in a xls file.
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%
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% INPUTS
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% o file string, name of the file (with extension).
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% o sheet string, name of the sheet to be read.
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% o range string of the form 'B2:D6'
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%
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% OUTPUTS
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% o freq integer scalar (1, 4, 12 or 52), code for frequency.
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% o init dates object, initial date of the sample.
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% o data matrix of doubles, the raw data.
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% o varlist cell of strings (column), names of the variables in the database.
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%
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% REMARKS
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% The range argument is only available on windows platform (with Excel installed).
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% Copyright (C) 2013 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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% Set defaults.
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if nargin<3 || isempty(range)
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range = '';
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if nargin<2 || isempty(sheet)
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sheet = 1;
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if nargin<1 || isempty(file)
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error('load_xls_file_data:: I need at least one input (name of the xls or xlsx file)!')
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end
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end
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end
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% Check file extension.
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if ~(check_file_extension(file,'xls') || check_file_extension(file,'xlsx'))
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ext = get_file_extension(file);
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if isempty(ext)
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if exist([file '.xls'],'file')
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file = [file '.xls'];
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elseif exist([file '.xlsx'],'file')
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file = [file '.xlsx'];
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else
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error(['load_xls_file_data:: Unable to find the data file ' file ' with an xls or xlsx extension!'])
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end
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else
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error(['load_xls_file_data:: The data file ' file ' has wrong extension (must be either xls or xlsx)!'])
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end
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end
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% load excel file.
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[num,txt,raw] = xlsread(file, sheet, range);
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% Get dimensions of num, txt and raw
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[n1, n2] = size(num);
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[t1, t2] = size(txt);
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[r1, r2] = size(raw);
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% Check the content of the file.
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if isequal(t1,0) && isequal(t2,0)
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% The file contains no informations about the variables and dates.
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notime = 1;
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noname = 1;
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elseif isequal(t2,1) && t1>=t2
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% The file contains no informations about the variables.
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notime = 0;
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noname = 1;
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elseif isequal(t1,1) && t2>=t1
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% The file contains no informations about the dates.
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notime = 1;
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noname = 0;
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else
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% The file contains informations about the variables and dates.
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notime = 0;
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noname = 0;
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end
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% Output initialization.
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freq = 1;
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init = dates(1,1);
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varlist = [];
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data = num;
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% Update freq.
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if ~notime
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if isempty(txt{1,1})
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first_date = txt{2,1};
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else
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first_date = txt{1,1};
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end
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if isnumeric(first_date) && isint(first_date)
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first_date = [num2str(first_date) 'Y'];
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end
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if isdate(first_date)
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init = dates(first_date);
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freq = init.freq;
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else
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error('load_xls_file_data: I am not able to read the dates!')
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end
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end
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% Update varlist.
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if ~noname
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if notime
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varlist = transpose(txt);
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else
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varlist = transpose(txt(1,2:end));
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end
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% Remove leading and trailing white spaces
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for i=1:length(varlist)
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varlist(i) = {strtrim(varlist{i})};
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end
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else
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% set default names
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varlist = cell(n2,1);
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for i=1:n2
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varlist(i) = {['Variable_' int2str(i)]};
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end
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end |