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Re: Axis layout of xyz in 3D plotting

From: Nicholas Jankowski
Subject: Re: Axis layout of xyz in 3D plotting
Date: Mon, 23 Aug 2021 12:15:43 -0400

> So no matter where this plot is viewed from, it is still a Left handed 
> coordinate system.

the default in matlab is to produce a right handed coordinate system.
See the documentation for the properties XDir, YDir, and ZDir here:

In the graphic for all three options set to 'normal', the x axis, y
axis, and z, axis all behave in a right handed fashion. the origin is
in the 'bottom' of the image. positive X goes to the right, positive y
goes to the left, positive z goes up. this matches your right-handed
triple graphic.

this set of commands:
plot3([0,1],[0,2],[0,3]);xlabel('x');ylabel('y'),zlabel('z');box on;

in both Octave and Matlab produce right hand ruled plots like the
first attached image.

rotating the view about the z axis to get positive x axis 'down left'
and the y axis 'down right' using the command: view([1 1 1]).  this
puts the origin at the 'center' point in the plot

the orientation you said you wanted for a textbook, with x 'down
left', y 'to the right', and z up can be gotten with something close
view([6 1 2])

see second attached image.

Attachment: image.png
Description: PNG image

Attachment: image.png
Description: PNG image

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