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Dear list, My name is Juan Fernandez-Tajes and I´m trying to use MALDIquant for analysing MS data from ABI 4700 series, I´ve exported a spot set to T2Dextractor in order to convert in mzXML format. I´ve imported this into R with mqReadMzXml function and have followed the suggested flowchart, however when I´m in the step for peak detections I obtained the following error...

...6),(20*16+1):(20*16+16)) score.mat = matrix(nc=16*4,nr=16*4) for(i in 1:(16*4)) { for(j in i:(16*4)) { score.mat[i,j] = score.mat[j,i] = computeScore(pk[[pk2test[i]]],pk[[pk2test[j]]],10,5)$score } } pk is a list of Object of type MassPeak from MALDIquant library. Each object is composed with a mass vector (@mass) an intensity vector (@intensity) and a metaData field (another list) score.mat is a matrix with scores (reals) pk2test is just a vector to know which objects in pk i want to deal with computeScore is the function i wrote to compute t...