How to show a equation?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Guilherme Lopes de Campos
le 24 Fév 2019
Commenté : Afifah Shabrina
le 3 Nov 2020
Hi MATLAB Community,
I Would to show a equation in the follow expression :
T = a1*f1+a2*f2+a3*f3+...+an*fn.
The vector there are all coeficient (a) and also the matriz (f), (depend of result the code previously).
I would to have a idea, how to build a structure, for take the value present in vector (a) and matriz (f), and show the equation example before. (The quantity of element can be different).
%Example:
a = [ 1 2 3] %vector of coefficient (in this case n=3)
T = 1.*F1+2*F2+3*F3; % Equation built
Could help me?
Thank you.
Guilherme
0 commentaires
Réponse acceptée
John D'Errico
le 24 Fév 2019
X = sym('X',[1,3]);
coeff = rand(1,3);
vpa(sum(X.*coeff),5)
ans =
0.022414*X1 + 0.053832*X2 + 0.14087*X3
1 commentaire
Afifah Shabrina
le 3 Nov 2020
clc;
clear all;
data = load('hypodd.reloc');
x = data(:,3); %Bujur
y = data(:,2); %Lintang
z = data(:,4); %Kedalaman Gempa
A = [x y ones(length(x),1)];
[cc,bint,r,rint,stats]= regress(z,A);
% PLOT PEMODELAN
scatter3(x,y,z);
hold on;
x_grid=119:0.05:120;
y_grid=-3.2:0.05:-2.2;
[XFIT, YFIT]=meshgrid(x_grid, y_grid);
AFIT=cc(1)*XFIT+cc(2)*YFIT+cc(3);
surf(XFIT,YFIT,AFIT);
set(gca,'ZDir','rev')
% LABEL
title('\fontsize{14}Model Bidang Sesar Bedasarkan Hiposenter Gempa');
legend('Hiposenter',1);
xlabel('Longitude')
ylabel('Latitude')
zlabel('Depth in Kilometers')
Hello, can you help me to show the equation of AFIT=cc(1)*XFIT+cc(2)*YFIT+cc(3) this?
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Logical 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!