How can i find specific data from a large no. of csv file?

4 views (last 30 days)
i have 1080 csv file named 1_1,1_2,...1_36, 2_1, 2_2,...2_36........30_1, 30_2,30_36, each file have different no. of rows with same no. of column,these files have x, y ,z and temperature values. I have one csv file named Data.csv having 68 combination of x ,y and z values , now i want to extract all 68 temperature values for each x , y and z points of Data.csv for each file into a single matrix of [68*1080]. How can i do this ,please help me with matlab code.
i am attaching Data.scv and one 1_1.csv for reference.

Answers (1)

KSSV
KSSV on 31 Mar 2022
T = readtable('Data.csv') ;
csvFiles = dir('*.csv') ; % otherfiles in a folder. Keep Data.csv seperatly
N = length(csvFiles) ;
M = size(T,1) ;
iwant = zeros(M,N) ;
for i = 1:N
Ti = readtable(csvFiles(i).name) ;
idx = knnsearch([Ti.(1) Ti.(2)],[T.(1) T.(2)]) ;
iwant(:,i) = Ti.(3)(idx) ;
end
  4 Comments
KSSV
KSSV on 1 Apr 2022
I am getting the values from the csv files which you have uploaded.

Sign in to comment.

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!