On Thu, 2008-06-19 at 02:30 +0200, [EMAIL PROTECTED] wrote: > Message: 2 > Date: Wed, 18 Jun 2008 19:43:21 +0530 > From: "amit sethi" <[EMAIL PROTECTED]> > Subject: [Tutor] (no subject) > To: tutor@python.org > Message-ID: > <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="iso-8859-1" > > Hi , Could you please tell me , how i can traverse a two dimensional >>> from numpy import * # import the necessary module
> >>> arry = array((1,2,3,4)) # create a rank-one array > >>> print arry > [1 2 3 4] > >>> print arry.shape > (4,) # this means it is a rank 1 array with a length of 4 (the trailing > comma means it is a tuple) > > To get to the first element in the array: > print arry[0] > 1 > > To get to the last element: > >>> print arry[-1] > 4 > >>> > > >>> arry2 = array(([5,6,7,8],[9,10,11,12])) # create a a rank-two array, > >>> two-dimensional, if wish > >>> print arry2 > [[ 5 6 7 8] > [ 9 10 11 12]] > >>> print arry2.shape # > (2, 4) # this means that it is a rank 2 (ie 2-dimensional) array, with each > axis having a length of 4 > >>> > To get to the first element in the first axis: > >>> print arry2[0,0] > 5 > To get to the last element in the second axis: > >>> print arry2[1,-1] > 12 > > Does this help? > Kinuthia... _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
