将matlab求出的矩阵保存在Excel表格中

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function xlswrite(m,header,colnames,filename);
% xlswrite     Easily create an Excel spreadsheet from MATLAB
%
%  xlswrite(m,header,colnames,filename) creates a Microsoft Excel
%     spreadsheet using
%  the MATLAB ActiveX interface.  Microsoft Excel is required.
%
%Inputs:
%    m          Matrix to write to file
% (Optional):
%    header     String of header information.
%                 Use cell array for multiple lines
%                  DO NOT USE multiple row character arrays!!
%    colnames   (Cell array of strings) Column headers.
%                     One cell element per column
%    filename   (string) Name of Excel file.  If not specified, contents will

%                  be opened in Excel.
%
% ex:
%   m = rand(100,4);
%   header = 'my data';
%   %header{1} = 'first line';      %This will give
%   %header{2} = 'second line';     % 2 header lines
%   colnames = {'Ch1','Ch2','Ch3','Ch4'};
%
%   xlswrite(m,header,colnames,'myfile.xls');
%        will save the spreadsheet as myfile.xls.  The user
%           will never see Excel
%   xlswrite(m,header,colnames);
%        will open Excel with these contents in a new spreadsheet.
%

% Scott Hirsch
% The MathWorks
% This is provided free, no warranty, ...

% Copied from ActiveX example in documentation

[nr,nc] = size(m);
if nc>256
   error('Matrix is too large.  Excel only supports 256 columns');
end;

% Open Excel, add workbook, change active worksheet,
% get/put array, save.
% First, open an Excel Server.
Excel = actxserver('Excel.Application');

%If the user does not specify a filename, we'll make Excel visible
%If they do, we'll just save the file and quit Excel without ever making
% it visible
if nargin<4
   set(Excel, 'Visible', 1);      %You might want to hide this if
                                    %  you autosave the file
end;

% Insert a new workbook.
Workbooks = Excel.Workbooks;
Workbook = invoke(Workbooks, 'Add');

% Make the first sheet active.
Sheets = Excel.ActiveWorkBook.Sheets;
sheet1 = get(Sheets, 'Item', 1);
invoke(sheet1, 'Activate');

% Get a handle to the active sheet.
Activesheet = Excel.Activesheet;

%Write header
if nargin<2 | isempty(header)
   nhr=0;
elseif iscell(header)
   nhr = length(header);       %Number header rows
   for ii=1:nhr
       ActivesheetRange = get(Activesheet,'Range',...
             ['A' num2str(ii)],['A' num2str(ii)]);
       set(ActivesheetRange, 'Value', header{ii});
   end;
else
   nhr = 1;                    %Number header rows
   ActivesheetRange = get(Activesheet,'Range','A1','A1');
   set(ActivesheetRange, 'Value', header);
end;

�d column names
if nargin>2 & ~isempty(colnames)
   nhr = nhr + 1;      %One extra column name
   ncolnames = length(colnames);
   for ii=1:ncolnames
       colname = localComputLastCol('A',ii);
       %    cellname = [char(double('A')+ii-1) num2str(nhr+1)];
       cellname = [colname num2str(nhr)];
       ActivesheetRange = get(Activesheet,'Range',cellname,cellname);
       set(ActivesheetRange, 'Value', colnames{ii});
   end;
end;

% Put a MATLAB array into Excel.
FirstRow = nhr+1;           %You can change the first data row here.
                           %  I start right after the headers
LastRow = FirstRow+nr-1;
FirstCol = 'A';         %You can change the first column here
LastCol = localComputLastCol(FirstCol,nc);
ActivesheetRange = get(Activesheet,'Range',...
[FirstCol num2str(FirstRow)],[LastCol num2str(LastRow)]);
set(ActivesheetRange, 'Value', m);

% If user specified a filename, save the file and quit Excel
if nargin==4
   invoke(Workbook, 'SaveAs', [pwd filesep filename]);
   invoke(Excel, 'Quit');

   [pathstr,name,ext] = fileparts(filename);
   disp(['Excel file ' name '.xls has been created.']);
end;

�lete the ActiveX object
delete(Excel)

function LastCol = localComputLastCol(FirstCol,nc);
% Comput the name of the last column where we will place data
%Input
%  FirstCol  (string) name of first column
%  nc        total number of columns to write

%Excel's columns are named:
% A B C ... A AA AB AC AD .... BA BB BC ...
FirstColOffset = double(FirstCol) - double('A');    %Offset from column A
if nc<=26-FirstColOffset       �sy if single letter
  %Just convert to ASCII code,add the number of needed columns,and convert back
   %to a string
   LastCol = char(double(FirstCol)+nc-1);
else
   ng = ceil(nc/26);       %Number of groups (of 26)
   rm = rem(nc,26)+FirstColOffset;      %How many extra in this group beyond
A
   LastColFirstLetter = char(double('A') + ng-2);
   LastColSecondLetter = char(double('A') + rm-1);
   LastCol = [LastColFirstLetter LastColSecondLetter];
end;

使用方法：

>> m = rand(100,4);
>> header = 'my data';
>> colnames = {'Ch1','Ch2','Ch3','Ch4'};
>>  xlswrite(m,header,colnames,'myfile.xls');

Excel file myfile.xls has been created.

来源：http://liuxinhust.blog.163.com/blog/static/657896120072275564194/