FilterMz(viewer, mz, tolerance = "ppm:20", title = "FilterMz");
A ms-imaging Drawer canvas object, which contains the ms-imaging rawdata. [as Drawer]
A numeric vector that used as the ion m/z value for extract the imaging layer data from the drawer canvas. [as double]
the mass tolerance error
[as string]
[as Environment]
A spectrum matrix data of m/z value assocated with the intensity value