1 files changed, 0 insertions, 344 deletions
diff --git a/gnuradio-core/src/python/gnuradio/gruimpl/freqz.py b/gnuradio-core/src/python/gnuradio/gruimpl/freqz.py
deleted file mode 100644
index 60dca64a58..0000000000
--- a/gnuradio-core/src/python/gnuradio/gruimpl/freqz.py
+++ /dev/null
@@ -1,344 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2005,2007 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-# This code lifted from various parts of www.scipy.org -eb 2005-01-24
-
-# Copyright (c) 2001, 2002 Enthought, Inc.
-#
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-#
-#   a. Redistributions of source code must retain the above copyright notice,
-#      this list of conditions and the following disclaimer.
-#   b. Redistributions in binary form must reproduce the above copyright
-#      notice, this list of conditions and the following disclaimer in the
-#      documentation and/or other materials provided with the distribution.
-#   c. Neither the name of the Enthought nor the names of its contributors
-#      may be used to endorse or promote products derived from this software
-#      without specific prior written permission.
-#
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
-# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-# DAMAGE.
-#
-
-__all__ = ['freqz']
-
-import numpy
-from numpy import *
-Num=numpy
-
-def atleast_1d(*arys):
-    """ Force a sequence of arrays to each be at least 1D.
-
-         Description:
-            Force an array to be at least 1D.  If an array is 0D, the
-            array is converted to a single row of values.  Otherwise,
-            the array is unaltered.
-         Arguments:
-            *arys -- arrays to be converted to 1 or more dimensional array.
-         Returns:
-            input array converted to at least 1D array.
-    """
-    res = []
-    for ary in arys:
-        ary = asarray(ary)
-        if len(ary.shape) == 0:
-            result = numpy.array([ary[0]])
-        else:
-            result = ary
-        res.append(result)
-    if len(res) == 1:
-        return res[0]
-    else:
-        return res
-
-
-def polyval(p,x):
-    """Evaluate the polynomial p at x.  If x is a polynomial then composition.
-
-    Description:
-
-      If p is of length N, this function returns the value:
-      p[0]*(x**N-1) + p[1]*(x**N-2) + ... + p[N-2]*x + p[N-1]
-
-      x can be a sequence and p(x) will be returned for all elements of x.
-      or x can be another polynomial and the composite polynomial p(x) will be
-      returned.
-    """
-    p = asarray(p)
-    if isinstance(x,poly1d):
-        y = 0
-    else:
-        x = asarray(x)
-        y = numpy.zeros(x.shape,x.typecode())
-    for i in range(len(p)):
-        y = x * y + p[i]
-    return y
-
-class poly1d:
-    """A one-dimensional polynomial class.
-
-    p = poly1d([1,2,3]) constructs the polynomial x**2 + 2 x + 3
-
-    p(0.5) evaluates the polynomial at the location
-    p.r  is a list of roots
-    p.c  is the coefficient array [1,2,3]
-    p.order is the polynomial order (after leading zeros in p.c are removed)
-    p[k] is the coefficient on the kth power of x (backwards from
-         sequencing the coefficient array.
-
-    polynomials can be added, substracted, multplied and divided (returns
-         quotient and remainder).
-    asarray(p) will also give the coefficient array, so polynomials can
-         be used in all functions that accept arrays.
-    """
-    def __init__(self, c_or_r, r=0):
-        if isinstance(c_or_r,poly1d):
-            for key in c_or_r.__dict__.keys():
-                self.__dict__[key] = c_or_r.__dict__[key]
-            return
-        if r:
-            c_or_r = poly(c_or_r)
-        c_or_r = atleast_1d(c_or_r)
-        if len(c_or_r.shape) > 1:
-            raise ValueError, "Polynomial must be 1d only."
-        c_or_r = trim_zeros(c_or_r, trim='f')
-        if len(c_or_r) == 0:
-            c_or_r = numpy.array([0])
-        self.__dict__['coeffs'] = c_or_r
-        self.__dict__['order'] = len(c_or_r) - 1
-
-    def __array__(self,t=None):
-        if t:
-            return asarray(self.coeffs,t)
-        else:
-            return asarray(self.coeffs)
-
-    def __coerce__(self,other):
-        return None
-
-    def __repr__(self):
-        vals = repr(self.coeffs)
-        vals = vals[6:-1]
-        return "poly1d(%s)" % vals
-
-    def __len__(self):
-        return self.order
-
-    def __str__(self):
-        N = self.order
-        thestr = "0"
-        for k in range(len(self.coeffs)):
-            coefstr ='%.4g' % abs(self.coeffs[k])
-            if coefstr[-4:] == '0000':
-                coefstr = coefstr[:-5]
-            power = (N-k)
-            if power == 0:
-                if coefstr != '0':
-                    newstr = '%s' % (coefstr,)
-                else:
-                    if k == 0:
-                        newstr = '0'
-                    else:
-                        newstr = ''
-            elif power == 1:
-                if coefstr == '0':
-                    newstr = ''
-                elif coefstr == '1':
-                    newstr = 'x'
-                else:
-                    newstr = '%s x' % (coefstr,)
-            else:
-                if coefstr == '0':
-                    newstr = ''
-                elif coefstr == '1':
-                    newstr = 'x**%d' % (power,)
-                else:
-                    newstr = '%s x**%d' % (coefstr, power)
-
-            if k > 0:
-                if newstr != '':
-                    if self.coeffs[k] < 0:
-                        thestr = "%s - %s" % (thestr, newstr)
-                    else:
-                        thestr = "%s + %s" % (thestr, newstr)
-            elif (k == 0) and (newstr != '') and (self.coeffs[k] < 0):
-                thestr = "-%s" % (newstr,)
-            else:
-                thestr = newstr
-        return _raise_power(thestr)
-
-
-    def __call__(self, val):
-        return polyval(self.coeffs, val)
-
-    def __mul__(self, other):
-        if isscalar(other):
-            return poly1d(self.coeffs * other)
-        else:
-            other = poly1d(other)
-            return poly1d(polymul(self.coeffs, other.coeffs))
-
-    def __rmul__(self, other):
-        if isscalar(other):
-            return poly1d(other * self.coeffs)
-        else:
-            other = poly1d(other)
-            return poly1d(polymul(self.coeffs, other.coeffs))
-
-    def __add__(self, other):
-        other = poly1d(other)
-        return poly1d(polyadd(self.coeffs, other.coeffs))
-
-    def __radd__(self, other):
-        other = poly1d(other)
-        return poly1d(polyadd(self.coeffs, other.coeffs))
-
-    def __pow__(self, val):
-        if not isscalar(val) or int(val) != val or val < 0:
-            raise ValueError, "Power to non-negative integers only."
-        res = [1]
-        for k in range(val):
-            res = polymul(self.coeffs, res)
-        return poly1d(res)
-
-    def __sub__(self, other):
-        other = poly1d(other)
-        return poly1d(polysub(self.coeffs, other.coeffs))
-
-    def __rsub__(self, other):
-        other = poly1d(other)
-        return poly1d(polysub(other.coeffs, self.coeffs))
-
-    def __div__(self, other):
-        if isscalar(other):
-            return poly1d(self.coeffs/other)
-        else:
-            other = poly1d(other)
-            return map(poly1d,polydiv(self.coeffs, other.coeffs))
-
-    def __rdiv__(self, other):
-        if isscalar(other):
-            return poly1d(other/self.coeffs)
-        else:
-            other = poly1d(other)
-            return map(poly1d,polydiv(other.coeffs, self.coeffs))
-
-    def __setattr__(self, key, val):
-        raise ValueError, "Attributes cannot be changed this way."
-
-    def __getattr__(self, key):
-        if key in ['r','roots']:
-            return roots(self.coeffs)
-        elif key in ['c','coef','coefficients']:
-            return self.coeffs
-        elif key in ['o']:
-            return self.order
-        else:
-            return self.__dict__[key]
-
-    def __getitem__(self, val):
-        ind = self.order - val
-        if val > self.order:
-            return 0
-        if val < 0:
-            return 0
-        return self.coeffs[ind]
-
-    def __setitem__(self, key, val):
-        ind = self.order - key
-        if key < 0:
-            raise ValueError, "Does not support negative powers."
-        if key > self.order:
-            zr = numpy.zeros(key-self.order,self.coeffs.typecode())
-            self.__dict__['coeffs'] = numpy.concatenate((zr,self.coeffs))
-            self.__dict__['order'] = key
-            ind = 0
-        self.__dict__['coeffs'][ind] = val
-        return
-
-    def integ(self, m=1, k=0):
-        return poly1d(polyint(self.coeffs,m=m,k=k))
-
-    def deriv(self, m=1):
-        return poly1d(polyder(self.coeffs,m=m))
-
-def freqz(b, a, worN=None, whole=0, plot=None):
-    """Compute frequency response of a digital filter.
-
-    Description:
-
-       Given the numerator (b) and denominator (a) of a digital filter compute
-       its frequency response.
-
-                  jw               -jw            -jmw
-           jw  B(e)    b[0] + b[1]e + .... + b[m]e
-        H(e) = ---- = ------------------------------------
-                  jw               -jw            -jnw
-               A(e)    a[0] + a[2]e + .... + a[n]e
-
-    Inputs:
-
-       b, a --- the numerator and denominator of a linear filter.
-       worN --- If None, then compute at 512 frequencies around the unit circle.
-                If a single integer, the compute at that many frequencies.
-                Otherwise, compute the response at frequencies given in worN
-       whole -- Normally, frequencies are computed from 0 to pi (upper-half of
-                unit-circle.  If whole is non-zero compute frequencies from 0
-                to 2*pi.
-
-    Outputs: (h,w)
-
-       h -- The frequency response.
-       w -- The frequencies at which h was computed.
-    """
-    b, a = map(atleast_1d, (b,a))
-    if whole:
-        lastpoint = 2*pi
-    else:
-        lastpoint = pi
-    if worN is None:
-        N = 512
-        w = Num.arange(0,lastpoint,lastpoint/N)
-    elif isinstance(worN, types.IntType):
-        N = worN
-        w = Num.arange(0,lastpoint,lastpoint/N)
-    else:
-        w = worN
-    w = atleast_1d(w)
-    zm1 = exp(-1j*w)
-    h = polyval(b[::-1], zm1) / polyval(a[::-1], zm1)
-    # if not plot is None:
-    #    plot(w, h)
-    return h, w