
#1
Feb1112, 05:31 PM

P: 1

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



#2
Feb1212, 09:04 AM

P: 763

Your diagram doesn't really explain what you are getting at. You might want to elaborate?




#3
Feb1212, 09:52 AM

Sci Advisor
P: 3,139

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 ?? 



#4
Feb1312, 05:05 PM

Mentor
P: 39,647

Need help reading 3DMaybe 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/toolbo...coordinate.gif 


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