Alternative solution (Chapter 1, Exercise 3) about scientific-visualization-book HOT 4 OPEN

I did not realize I need to allow discussions to have dicussion. I never use them yet. Tell me if you prefer discussion, else, we can discuss here.

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Nice. I think it might be a bit slower because of the several axis but it's worth to be included in the book if you're ok (you will need to add your name/copyright at the top of the file). Then we could modify the caption in the exercise to explain that you can have a single axis solution or several axis solution. My only worry is the vertical lines that use the ConnectionPatch with quite complex arguments (it's might be a bit too early in the book). But since it is an alternative solution, maybe it is not that important.

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I did not realize I need to allow discussions to have dicussion. I never use them yet. Tell me if you prefer discussion, else, we can discuss here.

It was just an explanation why I created an issue that is probably not an issue but just a sharing the alternative solution :)
So probably it will be more convenient to separate issues and discussions in the future.

Nice. I think it might be a bit slower because of the several axis but it's worth to be included in the book if you're ok (you will need to add your name/copyright at the top of the file). Then we could modify the caption in the exercise to explain that you can have a single axis solution or several axis solution.

Oh great, then I can create PR. What is the best place and the name of the file for this solution?

My only worry is the vertical lines that use the ConnectionPatch with quite complex arguments (it's might be a bit too early in the book). But since it is an alternative solution, maybe it is not that important.

I am trying to solve the exercises as best as I can myself and then I study your solutions, and my solution was based on the relevant information I found in internet. I didn't know about different coordinates which are used in the arguments of ConnectionPatch, and also the information about coordinates in the Chapter 2, so maybe it will be additional motivation to come back to this solution after Chapter 2 :)
By the way, I found that the solution for Exercise 1 from Chapter 1 was the hardest one for now and to be honest I didn't understand some part of the code provided :) But it was very useful anyway if you try to solve the exercises yourself at first.

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Sorry, late again. for the PR, may add "-alternative" for the script and inside the book, it can a single sentence stating that a different solution wiht individual axis can also be made.

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