https://github.com/cran/pracma
Tip revision: 162b33221cccd2760e0dd44598539c521ffcd73b authored by HwB on 18 March 2011, 00:00:00 UTC
version 0.2-2
version 0.2-2
Tip revision: 162b332
NEWS
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pracma NEWS
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CHANGES IN VERSION 0.2-2
NEW FUNCTIONS
o vnorm() vector norm
CORRECTIONS
o Warning about a nasty "non-ASCII input" in the savgol.RD file
has been resolved.
CHANGES IN VERSION 0.2-1
NEW FUNCTIONS
o horner() implementing the horner scheme for evaluating a polynomial
and its derivative.
o savgol() Savitzki-Golay smoothing and needed pseudoinverse pinv().
RESTARTED AS VERSION 0.2-0
NAME CHANGE
o Package renamed to 'pracma' to avoid name clashes with packages
such as 'matlab' that are sticking closer to the original.
OTHER CHANGES
o Added 'pracma-package' section to the manual.
CHANGES IN VERSION 0.1-9
NEW FUNCTIONS
o reshape(), repmat(), and blkdiag() matrix functions.
o combs() chooses all combinations of k elements out of n, and
randcomb() generates a random selection.
o perms() generates all permutations, randperm() a random permutation.
o Pascal triangle as pascal(); nchoosek() returns binomial coefficients.
o Some string functions: strcmp(), strcmpi(), strcat().
CHANGES IN VERSION 0.1-8
NEW FUNCTIONS
o std() as refinement of standard deviation function.
o ceil() and fix() as aliases for ceiling() and trunc().
[floor() and round() already exist in R.]
o Modulo functions mod(), rem() and integer division idiv().
o Integer functions related to the Euclidean algorithm:
extgcd(), gcd(), lcm(), coprime(), and modinv().
o distmat() and crossn(), the vector product in n-dimensional space.
CHANGES IN VERSION 0.1-7
NEW FUNCTIONS
o size(), numel(), ndims(), isempty(), and find().
o eye(), ones(), zeros().
o Functions returning random numbers: rand(), randn(), randi().
o linspace(), logspace(), and logseq() for linearly, logarithmically,
and exponentially spaced sequences.
CHANGES IN VERSION 0.1-6
NEW FUNCTIONS
o Matrix functions mdiag() and mtrace() added. inv() is introduced
as an alias for solve() in R.
o Generate special matrices hankel(), rosser(), and wilkinson().
kron() is an alias for the R function kronecker().
OTHER CHANGES
o Renamed factors() to ifactor() to distiguish it more clearly from
factors as used in R.
CHANGES IN VERSION 0.1-5
NEW FUNCTIONS:
o Added function for flipping or rotating numeric and complex
matrices: flipdim(). flipud(), fliplr(), and rot90().
CHANGES IN VERSION 0.1-4
NEW FUNCTIONS:
o Added basic complex functions real(), imag(), conj(), and angle()
which are essentially only aliases of the R functions Re(), Im(),
or Conj().
angle() returns the angle of a complex number in radians. The R
function Mod() is here only available as abs().
CHANGES IN VERSION 0.1-3
NEW FUNCTIONS:
o Added compan() function for the `companion' matrix; the eig() function
is an alias for the R eigen()values function.
o Added the polynomial functions poly(), polyder(), polyfit(),
polyint(), and polyval().
o roots() returns real and complex roots of polynomials.
OTHER CHANGES
o Simplified the trapz() function.
CHANGES IN VERSION 0.1-2
NEW FUNCTIONS
o Added functions from number theory: primes(), isprime() and factors().
The corresponding function for factors() in Matlab/Octave is called
factor(), but that name should not be shadowed in R!
o Added the polyarea() and trapz() functions.
CHANGES IN VERSION 0.1-1
NEW FUNCTIONS
o Added some simple functions such as nthroot(), pow2(), and nextpow2().
o dot() and cross() functions for scalar and vector product.
o Generate matrices through vander() and hilb().
INITIAL VERSION 0.1-0
INSTALLATION
o `matlab4r' will be a pure R package without using any source code.
Therefore, installation will be immediate on all platforms.
INTENTION
o This package provides R implementations of more advanced math
functions from Matlab and Octave (and the Euler Math Toolbox)
with a special view on optimization and time series routines.
