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Re: [SCIRUN-USERS] convert 1x16 to 4x4 matrix


Chronological Thread 
  • From: Dan White <dwhite@sci.utah.edu>
  • To: scirun-users@sci.utah.edu
  • Subject: Re: [SCIRUN-USERS] convert 1x16 to 4x4 matrix
  • Date: Thu, 3 Aug 2017 14:45:12 -0600

You could make a feature request in version 5 for a "ReshapeMatrix" module--it would be pretty easy to implement since the Eigen matrix library has a nice reshape function that does exactly what you want.

Dan


On 8/3/2017 2:36 PM, Petar Petrov wrote:
Hi Jess/Chris

I managed in the end by combining 4 times pairs of SelectSubMatrix with SetSubMatrix. To extract each row from the 1x16 vector and place it in the 4x4 matrix.
Kinda of convoluted :/
Of course I can create sub-module via GUI but those you cannot duplicate :(
So I might need the same amount of clicks in the end.

Anyway, thanks guys


On Thu, Aug 3, 2017 at 6:30 PM, Jess <jess@sci.utah.edu> wrote:
Hi Peter,

I think Chris meant the SetSubMatrix module, which would perform as he describe.  I think it is column wise.  If it is not what you want, you can use EvaluateMatrixUnary to transpose it.

cheers,
Jess



On Aug 3, 2017, at 9:03 AM, Christopher Butson PhD <butson@sci.utah.edu> wrote:
You can create an empty 4x4 matrix and then use SetFieldData to populate it with the 1x16 vector. However, I can’t recall if SetFieldData performs this operation row-wise or column-wise.
Chris

Christopher R. Butson, PhD
Director of Neuromodulation Research
Faculty, Scientific Computing & Imaging (SCI) Institute
Associate Professor, Departments of Biomedical Engineering, Neurology & Neurosurgery
University of Utah

Warnock Engineering Building
72 South Central Campus Drive, Room 3686
Salt Lake City, Utah 84112
butson@sci.utah.edu

On Aug 3, 2017, at 8:54 AM, Petar Petrov <pip010@gmail.com> wrote:
Hello all,

how can I convert 1x16 to 4x4 matrix in scirun.
Spent 3 hours clicking around :(

Cheers,
Petar

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--
All the best,
Petar Petrov
http://ppetrov.net


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