Dimensions in binary array

[keokeo]

Hello, does anyone know how to write in x/y/x dimensions using the binary array object? Maybe a certain syntax to input the coordinates?

[MuddyMole]

Binary Arrays are 1-dimensional arrays. If you want more dimensions, you'll have to simulate them yourself.
The easiest way is probably to use the Array 3D extension (not that it's hard to code without).

To be perfectly honest, you may as well just use a normal array - the filesize is unlikely to be a problem, and nor is the lack of encryption.

[RickyRombo]

If you want to convert/simulate a 3D array within a 1D array, it works like this:

Z * width * height + X * height + Y

Think of it like a cube. It's Length * Width * Height. Z is how deep you want to go, X is how far left/right, Y is how far up down.

If that makes sense.

[keokeo]

Thank you both. RickyRombo your expression seems to be what I was looking for.

[Dynasoft]

Though you tend to actually use:
Z * width * height + Y * width + X
(which stores the data row by row, Ricky's is column by column).

[MuddyMole]

But of course, that's not going to be much use without a way to convert back to 3d coordinates...

3d to 1d:
i = (z * dimX * dimY) + (y * dim + x

1d to 3d:
x = i mod dimX
y = i mod (dimX * dimY) / dimX
z = i / (dimX * dimY)

[RickyRombo]

I'm a more "up-down" guy, I guess

[Dynasoft]

But of course, that's not going to be much use without a way to convert back to 3d coordinates...

3d to 1d:
i = (z * dimX * dimY) + (y * dim + x

1d to 3d:
x = i mod dimX
y = i mod (dimX * dimY) / dimX
z = i / (dimX * dimY)

Better is:
x = i mod dimX
y = floor(i / dim mod dimY
z = floor(i / (dimX * dimY))

[MuddyMole]

No, not "better" - just different :P

[James]

Since the OP was asking about Binary Array in particular - there is an expression to convert X/Y/Z coordinates to a single X coordinate.