Zachary Seldess

If I have, say, a 3-plane float32 matrix @dim 1000 and I want to create a new matrix comprised of only the even cells of a this first matrix, is there a way to do this in jitter - with jit.expr perhaps?

Or maybe I want to filter out every multiple of 3...

I know how to do this with the matrix to jit.iter...etc.... and then reformat as new matrix, but it seems like there should be a way to stay in jitter land.

filter-out-specific-cells-in-matrix

jit.demultiplex should do exactly what you want.

> If I have, say, a 3-plane float32 matrix @dim 1000 and I want to create a new matrix comprised of only the even cells of a this first matrix, is there a way to do this in jitter - with jit.expr perhaps?

> Or maybe I want to filter out every multiple of 3...

> I know how to do this with the matrix to jit.iter...etc.... and then reformat as new matrix, but it seems like there should be a way to stay in jitter land.

Zachary Seldess wrote:
> Hi guys,
>
> If I have, say, a 3-plane float32 matrix @dim 1000 and I want to create a new matrix comprised of only the even cells of a this first matrix, is there a way to do this in jitter - with jit.expr perhaps?
>
> Or maybe I want to filter out every multiple of 3...
>
> I know how to do this with the matrix to jit.iter...etc.... and then reformat as new matrix, but it seems like there should be a way to stay in jitter land.
>
> Any help would be much appreciated!
>
> Zachary
>
> --
> http://www.zacharyseldess.com
>
>


I figured (as is too often the case!) I overlooked a simple solution.

What about how to filter out cells with value 0?

Hi all,
What about how to filter out cells with value 0?

If you want to change the dimension of the matrix, then maybe try jit.spill -> zl.filter (get rid of 0s) -> use zl.len to get the new length and re-dimension your destination matrix -> jit.fill

filter out specific cells in matrix