Help Understanding 3D Coordinates

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Understanding the positivity and negativity of 3D coordinates relies on the defined orientation of the axes. Typically, in a right-handed coordinate system, the positive direction for the x-axis is to the right, the positive direction for the y-axis is upward, and the positive direction for the z-axis is out of the plane toward the observer. The discussion emphasizes the importance of clearly defining the axes in any graphical representation to avoid confusion. A visual aid is suggested to help clarify the spatial relationships between the axes. Properly interpreting these orientations is crucial for accurately determining the signs of coordinates in 3D space.
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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