The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Data Analysis of a Set of Spatial Coordinates
Replies: 1   Last Post: Jan 30, 2013 8:17 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View  
Derek Goring

Posts: 3,922
Registered: 12/7/04
Re: Data Analysis of a Set of Spatial Coordinates
Posted: Jan 30, 2013 8:17 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Thursday, January 31, 2013 12:44:09 PM UTC+13, Mattylab wrote:
> Hello,
> I was given an N by 14 matrix with time, and spatial coordinates of the torso, hip, knee, and ankle. I need to estimate the velocity and acceleration of each marker in the data, then plot these values. Does anyone have any input on where to start my code? I have figured out the equations I need to use to calculate velocity and acceleration, but not sure where to start with the MATlab code.
> Any input would be greatly appreciated!!

help diff
would be a good start.

But beware!!
Differentiating exaggerates high frequency noise, so you'll most likely need to low pass filter your results. And acceleration will be even more noisy.

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.