Table extraction

*To*: mathgroup at smc.vnet.net*Subject*: [mg19141] Table extraction*From*: Maurice Shevalier <maurice at phas.ucalgary.ca>*Date*: Thu, 5 Aug 1999 23:58:44 -0400*Organization*: Physics & Astronomy, The University of Calgary*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I am trying to extract a section of a table with not much luck.... I have defined two tables (actually two arrays which are used to plot vectors with ListPlotVectorField) as follows: xyvector = Table[{0.,0.},{j,1,64},{i,1,320}]; backvector = Table[{0.,0.},{j,1,16},{i,1,100}]; I need to extract part of xyvector and place it into backvector. I have tried to use Part. I can extract the j range correctly (rows), but I can't get the Part function to extract in the i range (columns). I tried using Part[xyvector,{2,3}] which extracts 2 rows but I cannot figute out how to extract the necessary columns Can anyone help? Thanks, Maurice -- Maurice Shevalier | .~. Ph.D. Candidate | /V\ L I N U X Dept. of Physics and Astronomy | // \\ >The Penguin, The Slayer?< University of Calgary | /( )\ Calgary, AB, CANADA T2N-1N4 | ^^-^^ (403)220-7873 fax:(403)284-0074 | e-mail: maurice at phas.ucalgary.ca