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A. TRANSLATION BETWEEN MATLAB µ-TOOLS AND Xµ 397
Miscellaneous Utilities
Several utilities are provided in µ-Tools. These are subroutines used by other µ-Tools
functions which may be of more general use.
Description µ-Tools function Xmath/Xµ equivalent
complex random number crand randpdm
fit system to data fitsys fitsys
Eigenvalue based Riccati solution ric eig riccati eig
Schur based Riccati solution ric schr riccati schur
A.2 Matrix Information, Display and Plotting
Xmath provides matrix/data object size information via a variable window. There is no
Matlab equivalent for this functionality. Command window information can be
obtained via the following functions.
Description µ-Tools function Xmath/Xµ equivalent
matrix information minfo check, size, is
list workspace whos who
Plotting of varying matrices is provided by the Matlab µ-Tools function vplot.As
pdms are a native data object in Xmath, the standard Xmath plot function will
correctly plot a pdm. Multiple calls will overlay the data, even if the domains differ. The
Xµ function ctrlplot is provided for more control specific plots: Bode, Nyquist,
Nichols, log magnitude, etc..
Both Matlab and Xmath allow interactive manipulation of the graphical data and
storage and retrieval of plots from the workspace or the underlying file system.