Higher dimensional fits files are only viewable in the lowest dimension

[4ndyJ]

Fits files with dimensions greater than (X, Y), for example, (X, Y, L), which are typical of IFU observations with a spectral dimension, are only visualised at the first spectral dimension (index of 0).

Preposed Feature:

• A slider for extra-dimensional cubes
  • This would have a slider for each dimension above the two spatial dimensions
  • Users would be able to slide through the indices of these extra dimensions, visualising the X, Y plane at each index.

Example:

A cube of dimensions (X, Y, N, M) would be displayed (X, Y) at indecies [0,0] intially, but each plane (X, Y) is free to be viewed at [n, $m$] where $n$ and $m$ are the maximum indices available in N and M respectively, i.e., if the value from the slider is read as n = 4 and m = 15, and the plane (X, Y) is viewed at index slices [4, 15]

Foreseen Issues:

• Labelling of the slider
  • Although just visually labelling the sliders with the index would work, knowing what index $n$ means would be great; however, obtaining that information from the header may be unintuitive with different standards throughout the field.
• Potential memory issues
  • Loading more images into memory will require more resources, especially with larger cubes.

Caveat

I know you advertise your extension as a 2D fits viewer, so feel free to disregard this if you only want to use it for 2D data.

[lmytime]

Thank you @4ndyJ for raising this issue. I am really happy that this tool helps.
Indeed, it displays only the first frame of IFU data. I label this as an enhancement and plan to implement it in the future.