This is a simple MATLAB function for axis label alignment. It still works when Projection mode is Perspective or when DataAspectRatio is not [1 1 1].
## Functions
- `align_axislabel`: it rotates $x$, $y$ and $z$ labels to the direction of their corresponding axes and moves the labels to a proper distance from the axes;
- `align_axislabel_log`: supports log-scale in $z$ axis;
- `axislabel_rotation`: it performs rotation only;
- `axislabel_rotation_angle`: it computes the angles of $x$, $y$ and $z$ labels to be rotated properly (without performing the actual rotation);
- `axislabel_translation`: it moves axis labels to a proper distance from the axes;
- `axislabel_translation_slider`: a GUI slider for setting parameters `AXISALIGN_TRANS_A` and `AXISALIGN_TRANS_B`.
## Common usage
Label alignment plus GUI slider:
```
z = peaks;
figure('color', [1 1 1])
surf(z);
set(gca, 'dataaspectratio', [1 1 0.5], 'projection', 'perspective', 'box', 'on')
xlabel('This is an x label', 'fontsize', 16, 'fontweight', 'bold', 'color', [1 0 0])
ylabel('This is a y label', 'fontsize', 16, 'fontweight', 'bold', 'color', [0 0 0])
zlabel('This is a z label', 'fontsize', 16, 'fontweight', 'bold', 'color', [0 0 1])

% Add the following after you plot your figures
h = rotate3d;
set(h, 'ActionPreCallback', 'set(gcf,''windowbuttonmotionfcn'',@align_axislabel)')
set(h, 'ActionPostCallback', 'set(gcf,''windowbuttonmotionfcn'','''')')
set(gcf, 'ResizeFcn', @align_axislabel)
align_axislabel([], gca)
axislabel_translation_slider;

```

See `demo.m` for more information.