Help Required in using the function 'removerows' and its reverse function
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Avijit Paul
le 1 Déc 2023
Commenté : Avijit Paul
le 2 Déc 2023
Hello
I have column matrix 'rain'
d=find(rain>=1.0); %Index of rainfall more than 1mm/h
[x,position]=removerows(rain,'ind',d);
high_rain=rain(rain>=1.0); %Column matrix with only high rains
high_rain=high_rain*2.5; % Manipulate High_rain
%manipulate_rain=removerows('reverse',x,position);
I wanted to reinsert the high_rain back to rain variable using the reverse function of removerows. How to do that.
0 commentaires
Réponse acceptée
Image Analyst
le 1 Déc 2023
You can't. See:
x1 = [1 2 4; 1 1 1; 3 2 2; 0 0 0]
[y1,ps] = removerows(x1,'ind',[2 4])
% Reverse the processing of y1 to get x1 again.
x1_again = removerows('reverse',y1,ps)
Even the help says:
In the reverse calculation, the unknown values of replaced rows are represented with NaN values.
If you want rain, then just keep it in scope. If, for some reason, you want to multiply high rain values by some factor, you can use masking:
rain = 5 * rand(10, 1)
mask = (rain>=1.0) %Index of rainfall more than 1mm/h
rain(mask) = rain(mask) * 2.5
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Polymers 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!