[Scilab-users] Padarray Matlab equivalent in Scilab

[Lester Anderson]

Thanks for the update Samuel. Got the padding working as you suggested:

clear()
data = [1 2 3; 4 5 6; 7 8 9]
addedRows = 3; addedCols = 3;

tmp = [data ; data($, :) .*. ones(addedRows, 1)];
tmp = [tmp  tmp(:, $) .*. ones(1,addedCols)];
tmp = [repmat(tmp(1, : ), addedRows, 1) ; tmp];
paddedMat = [repmat(tmp(:,1) , 1, addedCols) tmp]

Perhaps an equivalent to "padarray" could be built into the next version(s).



On 10 February 2016 at 19:00, Samuel Gougeon <sgougeon at free.fr> wrote:
> Le 10/02/2016 16:43, sgougeon at free.fr a écrit :
>>>
>>> Thanks for the ideas, it kind of solves the need, but pads to left and
>>> bottom only:
>>
>> tmp = [data ; repmat(data($, :), addedRows, 1)];
>> paddedMat = [tmp  repmat(tmp(:, $) , 1, addedCols)]
>>
>> padds on the bottom and RIGHT.
>> To pad on the left and top, just tune the concatenation:
>>
>> tmp = [repmat(data($, :), addedRows, 1) ; data];
>> paddedMat = [repmat(tmp(:, $) , 1, addedCols) tmp]
>
> Rather
>
> tmp = [repmat(data(1, : ), addedRows, 1) ; data];
> paddedMat = [repmat(tmp(:,1) , 1, addedCols) tmp]
>
>
> SG
>
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