Add label alignment option to axis label title

[el]

Change in action: https://codepen.io/elizzk/pen/PoYBRWX

Closes: #6515

[benmccann]

@el the build is failing. Please make sure gulp lint works

[kurkle]

Is start at top for right scale ok? The numbers (that are not drawn for right axis in master btw!) start from bottom unless reversed.

[el]

Is start at top for right scale ok? The numbers (that are not drawn for right axis in master btw!) start from bottom unless reversed.

I wasn't thinking the scale start for start. It is the start of the label. (I didn't want to use left/right/top/bottom)

[etimberg]

I think we should consider the start point the same for left or right axes. As @kurkle mentioned, this should respect the reverse setting though for both orientations

[el]

I think we should consider the start point the same for left or right axes. As @kurkle mentioned, this should respect the reverse setting though for both orientations

What if all the data is negative? Then the axis start would be the top. Or if the data have negative and positive values, then the start would in the middle.

[kurkle]

What if all the data is negative? Then the axis start would be the top. Or if the data have negative and positive values, then the start would in the middle.

Start (lowest value) will still be at bottom, unless reverse is set. I'd consider scale start be same as first tick.

[el]

Updated codepen with start at bottom on right axis, and reverse support:

https://codepen.io/elizzk/pen/PoYBRWX?editors=1010

[kurkle]

Other than reverse for horizontal scales, looks good to me.

[benmccann]

looks good. just a couple minor comments

[kurkle]

reverse is not working correctly for horizontal scales.

[el]

So, I have created this page to test all possible variations:

https://codepen.io/elizzk/pen/PoYBRWX?editors=0010

Right now there is an issue with horizontal scales.

I will push pushed an update. If you know any other variation that can effect this, please let me know.

[el]

Do we need any other changes for this? @kurkle @benmccann @etimberg

[makivlach]

I would love if there was an option to put the axis label at the top (if it was Y-axis; like so)

link to the issue on StackOverflow: https://stackoverflow.com/questions/53797324/chartjs-align-axis-label-to-the-top