Changeset 136 for prdatasets/pr_readdataset.m

Timestamp:

12/16/19 11:48:22 (5 years ago)

Author:

bduin

Message:

 

File:

• prdatasets/pr_readdataset.m (modified) (2 diffs)

prdatasets/pr_readdataset.m

@@ -55 +55 @@
     s = textscan(fid,forms,'Delimiter',del,'Headerlines',nhead);
   end
-  if ~ischar(fid);
+  if ~ischar(fid)
     fclose(fid);
   end
@@ -70 +70 @@
 return
 
-
-% function [x,strvals] = pr_readdataset(fname,strtype)
-% %     [X,STRVALS] = PR_READDATASET(FNAME)
-% %
-% % Read the dataset from the text file FNAME. It can process categorical
-% % features, or features for which categories are given in text. A matrix
-% % X is returned containing the numerical values, or integers. The
-% % integers point to the entry in STRVALS containing for each
-% % (categorical) feature its string members.
-% %
-% %     X = PR_READDATASET(FNAME,STRTYPE)
-% %
-% % The user can supply a vector STRTYPE that indicates for each feature
-% % if it is numerical (0) or string/categorical (1).
-% %
-% %     X = PR_READDATASET(FNAME,STRTYPE,DELIMITER)
-% %
-% % For datasets that have a strange delimiter (not comma or space), you
-% % have to supply it.
-% if nargin<3
-%       delimiter = ',';
-% end
-% if nargin<2
-%       strtype = [];
-% end
-% 
-% % try to open the file
-% [fid,message] = fopen(fname,'r');
-% if fid==-1
-%       disp(message)
-%       error('I cannot open file %s.',fname);
-% end
-% % get the first line:
-% dline = fgetl(fid);
-% % check if the delimiter is present:
-% I = find(dline==delimiter);
-% if isempty(I)
-%       delimiter = ' ';
-%       I = find(dline==delimiter);
-%       if isempty(I)
-%               error('Cannot determine the delimiter');
-%       end
-% end
-% 
-% % now run over all elements in the line:
-% I = [0 I length(dline)+1];
-% w = {};
-% for i=1:length(I)-1
-%       w{i} = dline((I(i)+1):(I(i+1)-1));
-% end
-% 
-% % remove the empty entries:
-% I = zeros(length(w),1);
-% for i=1:length(w)
-%       if isempty(w{i})
-%               I(i) = 1;
-%       end
-% end
-% w(find(I)) = [];
-% n = length(w);
-% x = [];
-% 
-% % see if we have strings or numbers, and put the result in the matrix:
-% strvals = {};
-% if isempty(strtype)
-%       for i=1:n
-%               num = str2double(w{i});
-%               if isnan(num)   % the feature is string
-%                       strtype(i) = 1;   % remember that it is a string
-%                       strvals{i}{1} = w{i}; % put it to the collection
-%                       x(1,i) = 1;
-%               else               % feature is a number, life is simple
-%                       strtype(i) = 0;
-%                       x(1,i) = num;
-%               end
-%       end
-% else
-%       for i=1:n
-%               strtype(i) = 1;   % remember that it is a string
-%               strvals{i}{1} = w{i}; % put it to the collection
-%               x(1,i) = 1;
-%       end
-% end
-% % now run over the other lines:
-% nrx = 1;
-% while 1
-%       dline = fgetl(fid);
-%       if ~ischar(dline), break, end  %end of file...
-% 
-%       % now process this line:
-%       nrx = nrx+1;
-%       % find delimiters again:
-%       I = find(dline==delimiter);
-%       % cut out the words:
-%       I = [0 I length(dline)+1];
-%       w = {};
-%       for i=1:length(I)-1
-%               w{i} = dline((I(i)+1):(I(i+1)-1));
-%       end
-%       % remove the empty entries:
-%       I = zeros(length(w),1);
-%       for i=1:length(w)
-%               if isempty(w{i})
-%                       I(i) = 1;
-%               end
-%       end
-%       w(find(I)) = [];
-%       % check:
-%       if length(w)~=n
-%               error('I cannot find enough values on line %d.',nrx);
-%       end
-%       % fill the values in the matrix
-%       for i=1:n
-%               if strtype(i)==0 % we have a number:
-%                       tmp = str2double(w{i});
-%                       if isnan(tmp)
-%                               error('It seems that feature %d is not numeric (encountered "%s" on line %d).',i,w{i},nrx);
-%                       end
-%                       x(nrx,i) = tmp;
-%               else
-%                       % we have to find matching strings for feature i:
-%                       I = strmatch(w{i},strvals{i});
-%                       if ~isempty(I)  % it is found
-%                               x(nrx,i) = I;
-%                       else  % we have to add this entry:
-%                               x(nrx,i) = length(strvals{i})+1;
-%                               strvals{i}{end+1} = w{i};
-%                       end
-%               end
-%       end
-% end
-% 
-% fclose(fid);