A simulated three-dimensional display of multispectral data as shown in MatrixFinder. The black lines are the x, y, and zaxes. Each axis represents intensity at different detection wavelength. The dots are data points from a section of trace data plotted in the coordinate system, using three of the wavelength intensity values from each. In the MatrixFinder program, the display can be adjusted so that arbitrary axes correspond to arbitrary wavelengths, allowing viewing of the data in several different coordinate systems to compensate for the inability to display four dimensions at once. The four colored lines are the vectors found by the matrix-finding routine, representing the four principal dye spectra in the data. These are used directly as entries in a matrix for BaseFinder’s multicomponent transform tool.