question regarding reading .dat file in matlab

Question

jana 2014-4-30

0
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https://ww2.mathworks.cn/matlabcentral/answers/127751-question-regarding-reading-dat-file-in-matlab

回答： Sara 2014-4-30

采纳的回答： Sara

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Hi,

I've a dat file that looks like this:

  9    0.010426
  6    0.024578
  8    0.018038
 17    0.032405

I was wondering how I could read it in matlab. I have written the following code, but it doesnt give me the right answer. Is there a different way to read .dat file in matlab. I am new to matlab so please help.

function [costs] = adjacencyMatrix(filename)
filename = 'alnet3.dat';
      delimiterIn = ' ';
      startRow    = 1;
      startCol    = 1;
      M           = dlmread(filename,delimiterIn,startRow,startCol);
      N    = M(1,1); 
      node1       = M(3:end,1);
      node2       = M(3:end,2);
      cost        = M(3:end,3);
       pairs = sparse( node1, node2, cost ,N, N ) ;
       pairs = pairs + pairs.';
 costs = full(pairs);
end