Noise removal from mass profile using reference mass profile
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I have imported mass spectra from two mzXML files (noise, pure) , which work fine. Associated functions mspeaks, msdotplot, all work perfectly fine. I used mspeaks to get the most relevant peaks, and using 'Children','get' functions, I got the XData, YData, ZData, which are the M/Z values, Retentime time values, and intensity values respectively for each sample.
I stiched the X,Y,Z Data for each sample, noise and pure to get cubes.
'pure' is a sample which contains my 'component of interest' + 'solvent noise' of size (206842,3)
'noise' is a sample which contains the 'solvent noise' of size (196452,3)
This is the code used to generate the mass profile for 'pure'
hp = plot3(pure(:,1),pure(:,2),pure(:,3),'r.','DisplayName','Centroids','Tag','msdotplot');
set(hp,'MarkerSize',1),
ylim([903 1626]) %% set time
view(0,90),white,box on, title('pure')
xlabel('M/Z'),ylabel('R time (min)')
xlim([400 1300]) %% set M/Z
Similarly, the profile for noise can be plotted :-
When I overlap the files, noise (black) and pure (red), they look like this :-
Is there a simple way to filter out the noise (black) from pure (red) and get a corrected 'pure sample'? I have uploaded the files as a .mat (with x = M/Z, y = time (min), z = intensity)
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