Try result = A[1:] - A[:-1]
--Hoyt On Fri, Mar 21, 2008 at 7:43 PM, Chris Withers <[EMAIL PROTECTED]> wrote: > Hi All, > > Say I have an array like: > > >>> measurements = array([100,109,115,117]) > > What do I do to it to get: > > array([9, 6, 2]) > > Is the following really the best way? > > >>> result = [] > >>> for i in range(1,len(measurements)): > ... result.append(measurements[i]-measurements[i-1]) > ... > >>> array(result) > array([9, 6, 2]) > > cheers, > > Chris > > -- > Simplistix - Content Management, Zope & Python Consulting > - http://www.simplistix.co.uk > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@scipy.org > http://projects.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
