#58 [legend pos] make some more positions available (by default)

[Stefan Pinnow]

How about adding some more default positions, that are also used in the manual like
- north
- east
- south
- west
- outer north (should it be placed above or below a possible title?)
- outer south (should be placed below a possible x label)
(regarding the latest: There is already a Feature Request for that from Jake with a possible implementation
(https://sourceforge.net/p/pgfplots/feature-requests/40/))

(After they are implemented, use them in the manual itself where appropriate.)

[Symbol 1]

Even more complicated:
https://tex.stackexchange.com/questions/376657/how-to-put-the-legend-vertically-in-two-axes-coordinates-in-pgfplots

This is about how to rotate the legend. Eventually this is to rotate a \matrix. (https://tex.stackexchange.com/questions/7646/tikz-how-to-rotate-a-matrix-of-nodes)

Long story short: this is doable, but the workflow could be optimized. (For example making choice between 90 and 270.)

[Denis Bitouzé]

I fully agree with this feature request. I would add to the "outer" values of legend pos the following value as well:

• outer west (could make sense if the user prefers axis y line*=right)
• outer east
• outer south west
• outer south east
• outer north west
• outer north east