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