On Wed, Oct 28, 2009 at 9:08 PM, Jo <[email protected]> wrote: > > Hi, > > I need to replace some part of a matrix with an another matrix. I > tried to use matrix.set_block, but I got an error. I tried few other > alternative, but they returned all the same error: > > "TypeError: unable to convert x (=sin(t1)) to an integer" > > I made up a very simple example of a code that actually cause the > error: > > t1=var('t1'); > m1=Matrix([[sin(t1)]]); > m2=Matrix([[0]]); > m2[0,0]=m1[0,0]; #error happen here. > m2; > > Can anyone tell me what i'm doing wrong? Or did I just ended up in a > bug.... >
Try m2=Matrix(SR, [[0]]); Here SR = "symbolic ring". All entries of a matrix belong to the same ring. Your m2 above has entries that are all integers, which is the smallest ring that contains 0. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
