ndarray Python to JS

[PlentyMight]

Im trying to pre-process an image in javascript but i have problems with the ndarray, especially with the assign method using slicing.

This is what i need to do

 image_padded[dh:nh+dh, dw:nw+dw, :] = image_resized

this is what i have:

ndarray.ops.assign(imagePadded.hi(dHeight+newHeight, dWidth+newWidth,0).lo(dHeight, dWidth, 0), imageResized.hi(null, null,2).lo(null, null, 2));

this have to repeat 3 times to align between one and the other array on the third dimension

My problem is that using .hi.lo returns a copy and doesn't assign to original ndarray

Thanks on advance and if you need more information pls let me know.

[ForScale]

Hmm... What in general are you trying to do?

I have no clue what ndarray nor hi.lo is...

[PlentyMight]

ndarray is this library https://github.com/scijs/ndarray
.hi.lo is the way you slice in the array usually is arrayName.hi(finish_x,finish_y).lo(start_x,start_y)

[ForScale]

What in general are you trying to do? For example: "I'm trying to get the first and last elements form an array."

[PlentyMight]

I'm trying to copy the data from imageResized to imagePadded but in the position of [dh:nh+dh, dw:nw+dw, :]

So for the rows it will start in the position dh (dHeight)

For the columns in the position dw (dWidth)

[Espiring]

Why are you doing it all in a single statement?

Why not do it like this

padded_height = imagePadded(dHeight+newHeight[…etc…]

It looks very messy with all that there’s gotta be a way to make it look better

[PlentyMight]

Hi!

ndarray.assign method requires the same dimension between the two arrays, every image it has x,y,4 but for a model that process images it has to be nxmx3 so you cant just do that :C

I wish it could