DPlot Forum Index DPlot
http://www.dplot.com
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

new user question

 
Post new topic   Reply to topic    DPlot Forum Index -> Excel
View previous topic :: View next topic  
Author Message
jason lake



Joined: 03 Sep 2008
Posts: 3

PostPosted: Tue Sep 09, 2008 9:53 am    Post subject: new user question Reply with quote

Hi there,

I am working working with displacement data and using dplot to differentiate this data to generate velocity, smooth and then differentiate to generate acceleration data.

My question is, is there a way to calculate the objects force from the acceleration curve using the following formula: ((g [9.81]*mass [say 20kg])+(mass[say 20kg]*acceleration)).

If this were possible the velocity curve could then be multiplied by the force data to obtain mechanical power output.

Up until now I have been copying the data over to excel to perform these calculations but was wondering if there was perhaps a quicker way.

Many thanks,

Jason.
Back to top
View user's profile Send private message
DPlotAdmin
Site Admin


Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Tue Sep 09, 2008 10:31 am    Post subject: Reply with quote

Jason,
You can perform whatever manipulations you want to on your data within DPlot using Edit>Operate on Y. If you want to preserve the curve you'll be operating on then make a copy of it first: Edit>Copy>Data values, Edit>Paste.
_________________
Visualize Your Data
support@dplot.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website
jason lake



Joined: 03 Sep 2008
Posts: 3

PostPosted: Tue Sep 09, 2008 11:20 am    Post subject: Reply with quote

Thank you for your swift response.

That works perfectly in answering my first questioning.

However, I'm a bit stuck with regard to my second... can I multiply one y curve by another.

From your answer it seems that I can but I'm having trouble figuring it out.

Many thanks for your help,

Jason.
Back to top
View user's profile Send private message
DPlotAdmin
Site Admin


Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Tue Sep 09, 2008 12:08 pm    Post subject: Reply with quote

Yes, use Generate>Y=f(X,Y1,Y2,...)

For example to multiple the amplitudes of the 2nd curve by the amplitudes of the 3rd curve, use Y=Y2*Y3
_________________
Visualize Your Data
support@dplot.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website
jason lake



Joined: 03 Sep 2008
Posts: 3

PostPosted: Tue Sep 09, 2008 12:30 pm    Post subject: Reply with quote

Hi David...

that's excellent, worked perfectly.

Thank you very much for your help.

Kind regards, Jason.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    DPlot Forum Index -> Excel All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group