![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/284825/image.png)
Intercept of two polynomial of degree 2 graphs
3 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
i plotted two graphs, then using 'fit' function i interpolated to polynomial degree two. i can see the point of interception. But i want a function that wil calculate the values of X & Y at which both graphs inrecepts.
See the matlab code and the graph
%Plot the Q-H, Q-P, Q-n graph from the data set.
X1=xlsread('PAT Raw Lab data_plot.xlsx','N2:N331'); % x-axis column for time duration in weeks
Y1=xlsread('PAT Raw Lab data_plot.xlsx','O2:O331');
Z1=xlsread('PAT Raw Lab data_plot.xlsx','R2:R331');
Z2=xlsread('PAT Raw Lab data_plot.xlsx','S2:S331');% y-axis column for weekly ave windspeed (m/s)
figure(1)
f1=fit(X1,Y1,'poly2');
f2=fit(X1,Z2,'poly2');
yyaxis left
p1=plot (f1,X1,Y1,'c*');
ylabel ('Head (H)');
hold on
yyaxis right
p2=plot(f2,X1,Z2,'b*');
hold off
title (' Q-H, & Q-n Characteristic Curve');
xlabel ('Discharge (Q)');
ylabel ('Efficiency (n)');
legend ('Q-H data','Poly deg2 curve','Q-n','Poly deg2 curve');
Please, how can i get the corresponding value of the interception on the Y and X axis?
0 comentarios
Ver también
Categorías
Más información sobre Interpolation en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!