show and adjust coordinate axes?

[retsyo]

this is actally 2 questions

1. can we show the coordinate axes with arrow, i.e. x/y, when we call show()?
2. I noticed that in ipythonblocks, x-axis is from left to right, y-axis is from top to down. But it is also common to use (at least) y-axis which is from down to top.
   Thnaks

[jiffyclub]

For your second request take a look at the ImageGrid class: https://github.com/jiffyclub/ipythonblocks/blob/master/ipythonblocks/ipythonblocks.py#L930 It defaults to a lower-left origin.