
Linear Algebra Linear Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
April 16th, 2009, 03:12 PM  #1 
Newbie Joined: Apr 2009 Posts: 1 Thanks: 0  Reducing the number of rows in a matrix (interpolating?!?!?)
Dear members I hope you had a great Easter weekend and I hope all of you are well today! I need help with my current project regarding Principal Component Analysis. To describe shortly, I get data that is being sampled every 10ms (100 samples per second). I have a matrix of 48 coloumns and I want to have 48 rows (each row representing 1 sample) for each measurement so that I can have a square matrix for further calculations but I can not know in advance how many samples/rows I can get during the measurement. It may easily be 100 or more. So the first and last rows in the matrix remaining the same, I need to reduce the number of the rest of the samples to 46. Then I will have a matrix of 48 coloumns with 48 rows where the first row will be the first sample values, the last row will be the last sample values the those between these two have to be distributed accordingly being in total of 46. Can anyone give me an opinion about how I can do this? I am not even sure if the answer is related to this branch (linear algebra). Many thanks in advance for all your contribution!!!! Kind regards Mine 

Tags 
interpolating, matrix, number, reducing, rows 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Sums over rows and columns  rdeussen  Linear Algebra  0  May 31st, 2013 06:22 AM 
Reducing  math89  Algebra  2  January 19th, 2013 09:25 AM 
Interpolating polynomial : Using Newton's formula  miner  Calculus  1  December 25th, 2011 11:02 AM 
51 rows of 50 points  Filip  Math Events  4  July 2nd, 2011 03:05 AM 
Reducing the polynomial  Matt  Abstract Algebra  1  December 3rd, 2009 06:20 AM 