Matlab: error message running Quantisnp -


i run program called quantisnp used matlab in code. not familiar matlab @ all. got below error message , no output. idea how fix it? fyi, don't have access source code of program.... 

??? error using ==> chol matrix must positive definite.  matlab:posdef

highly appreciate help

jean

it's hard trying answer question without seeing code here general info problem facing:

  1. what see matlab error message. assume quantisnp compiled matlab program can't debug it. in short says @ point program trying calculate cholesky factorization using chol() function, matrix inside not positive definite. of time problem happens because matrix zero, in turn [potentially] caused invalid input parameter
  2. check see if parameters using (1) valid , (2) match environment. if there input csv or txt file, make sure path correct. make sure numbers make sense. there zeros or lines somewhere should not there?
  3. depending on version of quantisnp have, may have access --verbose switch. add --verbose end of command (for example quantisnp2.exe firstparam secondparam --verbose) see messages on screen program runs through data. see if can figure out it's failing , if it's related input parameters.

take quantisnp how-to page make sure understand required parameters , formatting of input file.


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