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 Am 24.11.2015 um 10:03 schrieb Jonathan Camilleri: I tried this: Read http://www.octave.org/bugs.html to learn how to submit bug reports. For information about changes from previous versions, type 'news'. >> m1 = {1 1; 2 4; 4 8; 3 6} m1 = {   [1,1] =  1   [2,1] =  2   [3,1] =  4   [4,1] =  3   [1,2] =  1   [2,2] =  4   [3,2] =  8   [4,2] =  6 } >> m2 = m1.^0.2 error: binary operator '.^' not implemented for 'cell' by 'scalar' operations >> cell2mat(m2) error: 'm2' undefined near line 1 column 10 error: evaluating argument list element number 1 >> On 24 November 2015 at 10:00, Marco Atzeri wrote: On 24/11/2015 09:56, Jonathan Camilleri wrote: I thought I could do matrix multiplications and the mathematical operators, but evidently I cannot. See https://en.wikipedia.org/wiki/Operation_(mathematics) https://en.wikipedia.org/wiki/Algebra https://en.wikipedia.org/wiki/Order_of_operations   m1 = {1 1; 2 4; 4 8; 3 6} m1 = {    [1,1] =  1    [2,1] =  2    [3,1] =  4    [4,1] =  3    [1,2] =  1    [2,2] =  4    [3,2] =  8    [4,2] =  6 } >  >> m2 = m1.*0.2 > error: binary operator '.*' not implemented for 'cell' by 'scalar' m1 is not a Matrix. May be you were looking for octave:1> m1 = [1 1; 2 4; 4 8; 3 6] m1 =    1   1    2   4    4   8    3   6 octave:2> m2 = m1.*0.2 m2 =    0.20000   0.20000    0.40000   0.80000    0.80000   1.60000    0.60000   1.20000 _______________________________________________ Help-octave mailing list address@hidden https://lists.gnu.org/mailman/listinfo/help-octave -- Jonathan Camilleri Mobile (MT): ++356 7982 7113 E-mail: address@hidden Please consider your environmental responsibility before printing this e-mail.   I usually reply to emails within 2 business days.  If it's urgent, give me a call. Business Services https://www.facebook.com/jonbusinessservices?ref=hl,  and, angel start-up investment opportunities available at http://slyth3.wix.com/jon-business. Donation page https://www.facebook.com/DonateToJonathan?ref=hl Vintage Malta https://www.facebook.com/VintageMalta?ref=hl  Online resume is available online at http://mt.linkedin.com/in/jonathancamilleri and shared bookmarks at  Doing business in Malta - https://www.gov.mt/en/About%20Malta/Doing%20Business%20in%20Malta/Pages/Doing-Business-in-Malta.aspx, presented by the Government of Malta. http://www.ccmalta.com/doing-business-in-malta/, presented by CC Advocates. http://www.kpmg.com/MT/en/IssuesAndInsights/Doing%20Business%20in%20Malta/Documents/KPMG%20Tax%20Report.pdf, prepared by KPMG. ```_______________________________________________ Help-octave mailing list Help address@hidden https://lists.gnu.org/mailman/listinfo/help-octave ``` {1 1; 2 4; 4 8; 3 6} is not the same as [1 1; 2 4; 4 8; 3 6]. For the difference see the Octave manual "cell array" and "matrix".