Help Understanding 3D Coordinates

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SUMMARY

This discussion focuses on understanding the positive and negative values of 3D coordinates in the Cartesian system. The consensus is that the positive direction for the X-axis is East, the Y-axis is North, and the Z-axis is Up. Participants emphasize the importance of clearly defining axes in diagrams and charts to avoid confusion. A reference image from MathWorks is suggested to aid in visualizing the coordinate system.

PREREQUISITES
  • Understanding of Cartesian coordinates
  • Familiarity with 3D graphing concepts
  • Basic knowledge of directional terminology (East, North, Up)
  • Ability to interpret graphical representations
NEXT STEPS
  • Study the principles of Cartesian coordinate systems
  • Explore 3D graphing tools like MATLAB for visual representation
  • Learn about the right-hand rule for determining axis orientation
  • Review resources on vector mathematics in three dimensions
USEFUL FOR

This discussion is beneficial for students, educators, and professionals in fields such as mathematics, physics, and engineering who require a clear understanding of 3D coordinate systems.

Speedracer72
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Ok, so I am having help knowing when x,y,z are positive or negative. My graph looks something similar to this..

-------------z---------x
-------y

---------------------y

---x

--------------z

I am really confused as to when a location in all 3 axes is negative or positive in all x,y,z.
 
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Your diagram doesn't really explain what you are getting at. You might want to elaborate?
 
Well, i may not understand the question either.
See if this is on track -

it's the duty of the guy who's writing the book or article or drawing the chart to define his axes.

Let's start simple

IF you look at a map flat on your table,
most folks would agree East is positive direction in X,
and North is positive direction in Y,
and UP out of the map is positive direction in Z.

is that any help ??
 
Speedracer72 said:
Ok, so I am having help knowing when x,y,z are positive or negative. My graph looks something similar to this..

-------------z---------x
-------y

---------------------y

---x

--------------z

I am really confused as to when a location in all 3 axes is negative or positive in all x,y,z.

Welcome to the PF.

Maybe this is a better picture to start with. Can you use this picture to state your question a little more clearly?

http://www.mathworks.com/help/toolbox/phased/ug/rh_coordinate.gif
http://www.mathworks.com/help/toolbox/phased/ug/rh_coordinate.gif
 
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