Last change
on this file since 2 was
1,
checked in by dtax, 15 years ago
|
Dissimilarity toolbox, start!
|
File size:
1.5 KB
|
Rev | Line | |
---|
[1] | 1 | % Read Bunke's data to PRTOOLS |
---|
| 2 | |
---|
| 3 | function D = prtbunke(fname) |
---|
| 4 | |
---|
| 5 | fid = fopen(fname,'r'); |
---|
| 6 | if fid == -1, |
---|
| 7 | error(['File not found: ' fname]) |
---|
| 8 | end |
---|
| 9 | |
---|
| 10 | ok = 0; |
---|
| 11 | info = []; |
---|
| 12 | lab = []; |
---|
| 13 | |
---|
| 14 | while ~ok, |
---|
| 15 | str = fgetl(fid); |
---|
| 16 | switch str |
---|
| 17 | case '.CHARACTERBAND TYPE' |
---|
| 18 | info.datatype = fgets(fid); |
---|
| 19 | |
---|
| 20 | case '.COST FUNCTION' |
---|
| 21 | str = fgets(fid); |
---|
| 22 | [info.costfun,info.cost] = strread(str,'%s%f','delimiter',' '); |
---|
| 23 | |
---|
| 24 | case '.CLASS MEMBERSHIP' % here come labels |
---|
| 25 | str = fgets(fid); |
---|
| 26 | lab = strread(str,'%s','delimiter',' '); |
---|
| 27 | |
---|
| 28 | case '.DISTANCE MATRIX' |
---|
| 29 | D = fscanf(fid,'%f'); |
---|
| 30 | N = sqrt(length(D)); |
---|
| 31 | D = reshape(D,N,N); |
---|
| 32 | if issym(D,1e-10), |
---|
| 33 | D = 0.5*(D+D'); |
---|
| 34 | end |
---|
| 35 | if ~isempty(lab), |
---|
| 36 | D = dataset(D,lab,'featlab',lab); |
---|
| 37 | C = classsizes(D); |
---|
| 38 | % Should it be class frequencies or equal priors? |
---|
| 39 | if length(C) > 1, |
---|
| 40 | D = setprior(D,C/sum(C)); |
---|
| 41 | end |
---|
| 42 | if ~isempty(info), |
---|
| 43 | D = setuser(D,info); |
---|
| 44 | end |
---|
| 45 | p = findstr(lower(fname),'_norm'); |
---|
| 46 | if ~isempty(p), |
---|
| 47 | pos = findstr(lower(fname),'/'); % Linux |
---|
| 48 | if isempty(pos) |
---|
| 49 | pos = findstr(lower(fname),'\'); % Windows |
---|
| 50 | end |
---|
| 51 | if isempty(pos), |
---|
| 52 | z = 1; |
---|
| 53 | else |
---|
| 54 | I = find(pos < p(1)); |
---|
| 55 | z = pos(I(end))+1; |
---|
| 56 | end |
---|
| 57 | D = setname(D,['Distance matrix for ' fname(z:p(1)-1)]); |
---|
| 58 | else |
---|
| 59 | D = setname(D,'Distance matrix'); |
---|
| 60 | end |
---|
| 61 | end |
---|
| 62 | ok = 1; |
---|
| 63 | otherwise |
---|
| 64 | ; |
---|
| 65 | end |
---|
| 66 | ok = feof(fid); |
---|
| 67 | end |
---|
| 68 | fclose(fid); |
---|
| 69 | return |
---|
Note: See
TracBrowser
for help on using the repository browser.