×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Data Analysis querry

## Data Analysis querry

(OP)
Hello

I have a set of data which I download as a two column data array into MathCad 2001i and typically 1000 rows. The data is the change in mass (y) as a function of time (x)

I would like to complete a running calculation of the slope of my data using around five data points at a time i.e. start at i:=0 to i:=5, calculate slope from data points in that range of data and then start at i:=1 to i:=6 etc until the full 1000 data points have been analysed.

Would anyone know the best method of doing this in MathCad? I have been playing around with the programming part of MathCad (while and if loops) but am not sure if there is a simpler method

Many thanks

### RE: Data Analysis querry

i:0;1000

acc[i:0

i:2;998

acc[i:(y[(i+2)-y[(i-2))/(x[(i+2)-x[(i-2)))

Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!