How to find significance of correlation coefficients?
39 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Keegan Carvalho
le 13 Avr 2020
Commenté : Adam Danz
le 13 Avr 2020
Hi Matlab World,
I am trying to find the significance of the correlation coefficients between two variables ssh and t (Zip file attached). I have hence used the following code:
lat = ncread('ssh.nc','latitude');
lon = ncread('ssh.nc','longitude');
ssh = ncread('ssh.nc','zos');
t = ncread('ssh.nc','bottomT');
nx=length(lon);
ny=length(lat);
rxy = zeros(nx,ny) ;
sxy = zeros(nx,ny) ;
for i=1:nx
for j=1:ny
[r,s] = corr(squeeze(t(i,j,:)),squeeze(ssh(i,j,:)));
rxy(i,j)=r;
end
end
I wanted to find how much of the area has significant correlation at 95% significance level (p value < 0.05) and plot it thereafter. Looking forward to your assistance.
0 commentaires
Réponse acceptée
Adam Danz
le 13 Avr 2020
The 2nd output to corr() gives you the p-value. You just need to save those values.
[rxy(i,j),sxy(i,j)] = corr(squeeze(t(i,j,:)),squeeze(ssh(i,j,:)));
2 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur NetCDF dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!