Merge pull request #85 'jsilter/find_peaks'

Add several functions for the purpose of finding peaks in a 1-D ndarray.

THANKS.txt

@@ -95,7 +95,7 @@ Fazlul Shahriar for fixes to the NetCDF3 I/O.
 Chris Jordan-Squire for bug fixes, documentation improvements and 
     scipy.special.logit & expit.
 Christoph Gohlke for many bug fixes and help with Windows specific issues.
-
+Jacob Silterra for cwt-based peak finding in scipy.signal.
 
 Institutions
 ------------

scipy/signal/__init__.py

@@ -187,6 +187,19 @@
    daub     -- return low-pass
    morlet   -- Complex Morlet wavelet.
    qmf      -- return quadrature mirror filter from low-pass
+   ricker   -- return ricker wavelet
+   cwt      -- perform continuous wavelet transform
+
+Peak finding
+============
+
+.. autosummary::
+   :toctree: generated/
+
+   find_peaks_cwt -- Attempt to find the peaks in the given 1-D array
+   argrelmin      -- Calculate the relative minima of data
+   argrelmax      -- Calculate the relative maxima of data
+   argrelextrema  -- Calculate the relative extrema of data
 
 """
 
@@ -207,6 +220,7 @@
 from signaltools import *
 from spectral import *
 from wavelets import *
+from _peak_finding import *
 
 __all__ = filter(lambda s: not s.startswith('_'), dir())
 from numpy.testing import Tester