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How to overcome an error 'Subscript indices must either be real positive integers or logicals' when using mspalign function'?

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nur zawatil isqi
nur zawatil isqi 2014-1-13
评论： nur zawatil isqi 2014-1-13
When I'm using mspalign to align my peaks (GC-MS) then an error generated as 'Subscript indices must either be real positive integers or logicals' when using mspalign function' .I've google for any solution regarding on this error. I've found out this happen because the indices contain floating points. Unfortunately my data contains floating points for the m/z value. However, when I'm referring the example dataset use in MATLAB help, its appear to have floating point to m/z value too.I'm also change few parameters in mspalign such as quantile, estimationmethod and correctionmethod. This also doesn't work but new error appear when changing estimationmethod to regression since not enough point to calculate common grid in mz scale.
Can anyone help me understand what's going on? If you need the data I'll send to your through email or any way.
  2 个评论
nur zawatil isqi
nur zawatil isqi 2014-1-13
Thank you Chocolate Warrior. Here the code. [CMZ, aligned_peaks] = mspalign(peaks);
I had found the solution. I had try changing numbers of quantile value with 3 decimal place. Here the codes
i=0;
while i<1
try
[CMZ, aligned_peaks] = mspalign(peaks,'quantile',i); catch err if (strcmp(err.identifier,'MATLAB:badsubscript')) disp(i) i=i+0.001;
else
rethrow(err);
end
end %end catch
end

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