centwave-scanrange May 22, 2012, 03:51:52 AM Hi, I got a problem with the centwave-scanrange. I want to select a range of data using the scantime, however, the centwave only have the scanrange function. my question is how to get the scanrange. I found that the the scanrange (scan index) is not the scan number..@ env :<environment: 0x02fb58e0> ..@ tic : num [1:1377] 30161494 29720700 30073236 29816570 29062580 ... ..@ scantime : num [1:1377] 6.07 6.94 7.8 8.69 9.55 ... ..@ scanindex : int [1:1377] 0 1006 2005 2995 4035 5069 6038 7052 8087 9132 ... ..@ polarity : Factor w/ 3 levels "negative","positive",..: 2 2 2 2 2 2 2 2 2 2 ... ..@ acquisitionNum : int [1:1377] 1 7 13 19 25 31 37 43 49 55 ... ..@ profmethod : chr "bin" ..@ profparam : list() ..@ mzrange : num [1:2] 50 1500 ..@ gradient : logi[0 , 0 ] ..@ msnScanindex : int(0) ..@ msnAcquisitionNum : int(0) ..@ msnPrecursorScan : int(0) ..@ msnLevel : int(0) ..@ msnRt : num(0) ..@ msnPrecursorMz : num(0) ..@ msnPrecursorIntensity: num(0) ..@ msnPrecursorCharge : num(0) ..@ msnCollisionEnergy : num(0) ..@ filepath : chr "QC8.mzXML" Quote Selected
Re: centwave-scanrange Reply #1 – May 23, 2012, 05:08:07 PM ..@ scantime : num [1:1377] Your scan range is 1 to 1377.The scantime slot of the xcmsRaw object contains the scan time of each scan. Quote Selected