How to convert a single row list to matrix or vector? (Solved)

11192015, 03:18 PM
(This post was last modified: 11192015 04:48 PM by cclinus.)
Post: #1




How to convert a single row list to matrix or vector? (Solved)
Hi,
How to convert a single row list to matrix or vector in program? For example A:={1,2,3,4} list2mat doesn't work for {1,2,3,4}. I can use M0:={1,2,3,4} to obtain a vector. But, I want to use local variable only. Please help! Regards, 

11192015, 03:32 PM
(This post was last modified: 11192015 03:37 PM by Han.)
Post: #2




RE: How to convert a single row list to matrix or vector?
(11192015 03:18 PM)cclinus Wrote: Hi, list2mat(list, width)  if list has n elements, then this creates a matrix of dimension (n/width) x width list2mat({1,2,3,4},2) makes a 2x2 matrix using 1,2 for row 1 and 3,4 for row 2. list2mat({1,2,3,4},4) makes a 1x4 matrix using 1,2,3,4 for the single row. If you want a row vector (i.e. not a 1x4 matrix) you can do something like: m:=list2mat({1,2,3,4},4); m(1); // returns just the first row [ 1, 2, 3, 4 ] Graph 3D  QPI  SolveSys 

11192015, 03:34 PM
(This post was last modified: 11192015 03:37 PM by Helge Gabert.)
Post: #3




RE: How to convert a single row list to matrix or vector?
TRN(list2mat({1,2,3,4},1)) ? Here you don't need to know n (number of columns). Might be useful in a program.


11192015, 03:41 PM
Post: #4




RE: How to convert a single row list to matrix or vector?  
11192015, 04:47 PM
Post: #5




RE: How to convert a single row list to matrix or vector?
Thanks everybody!


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