Trying to change the y axis range in fplot

조회 수: 138 (최근 30일)
Saim
Saim 2022년 10월 31일
댓글: Star Strider 2022년 10월 31일
This is the code
clear all
clc
close all
syms s a b c d e f
n10 = a + (b*s) + c*(s^2) + d*(s^3) + e*(s^4) + f*(s^5)
n10_d1 = diff(n10,s)
n10_d2 = diff(n10_d1,s)
A = subs(n10,s,-1)
B = subs(n10,s,1)
C = subs(n10_d1,s,-1)
D = subs(n10_d1,s,1)
E = subs(n10_d2,s,-1)
F = subs(n10_d2,s,1)
eqn1 = A == 0;
eqn2 = B == 0;
eqn3 = C == 1;
eqn4 = D == 0;
eqn5 = E == 0;
eqn6 = F == 0;
[G,H] = equationsToMatrix([eqn1, eqn2, eqn3, eqn4, eqn5, eqn6], [a, b, c, d, e, f])
X = linsolve(G,H)
x = [1;s;s^2;s^3;s^4;s^5]
N3 = transpose(X)*x
hold on
fplot(N3,[-1 1])
It plots automatically between y = 0 and y = 0.4
I want to plot it between y= -1 and y = +1
The purpoe is comparison with other existing graphs that are between -1<=y<=1
Running it on MATLAB online
Please help

채택된 답변

Star Strider
Star Strider 2022년 10월 31일
See if ylim will do what you want —
syms s a b c d e f
n10 = a + (b*s) + c*(s^2) + d*(s^3) + e*(s^4) + f*(s^5)
n10 = 
n10_d1 = diff(n10,s)
n10_d1 = 
n10_d2 = diff(n10_d1,s)
n10_d2 = 
A = subs(n10,s,-1)
A = 
B = subs(n10,s,1)
B = 
C = subs(n10_d1,s,-1)
C = 
D = subs(n10_d1,s,1)
D = 
E = subs(n10_d2,s,-1)
E = 
F = subs(n10_d2,s,1)
F = 
eqn1 = A == 0;
eqn2 = B == 0;
eqn3 = C == 1;
eqn4 = D == 0;
eqn5 = E == 0;
eqn6 = F == 0;
[G,H] = equationsToMatrix([eqn1, eqn2, eqn3, eqn4, eqn5, eqn6], [a, b, c, d, e, f])
G = 
H = 
X = linsolve(G,H)
X = 
x = [1;s;s^2;s^3;s^4;s^5]
x = 
N3 = transpose(X)*x
N3 = 
% hold on
fplot(N3,[-1 1])
ylim([-1 1]) % ADDED
grid % ADDED
.
  댓글 수: 2
Saim
Saim 2022년 10월 31일
Thanks a lot
Star Strider
Star Strider 2022년 10월 31일
As always, my pleasure!

댓글을 달려면 로그인하십시오.

추가 답변 (1개)

Chunru
Chunru 2022년 10월 31일
syms s a b c d e f
n10 = a + (b*s) + c*(s^2) + d*(s^3) + e*(s^4) + f*(s^5)
n10 = 
n10_d1 = diff(n10,s)
n10_d1 = 
n10_d2 = diff(n10_d1,s)
n10_d2 = 
A = subs(n10,s,-1)
A = 
B = subs(n10,s,1)
B = 
C = subs(n10_d1,s,-1)
C = 
D = subs(n10_d1,s,1)
D = 
E = subs(n10_d2,s,-1)
E = 
F = subs(n10_d2,s,1)
F = 
eqn1 = A == 0;
eqn2 = B == 0;
eqn3 = C == 1;
eqn4 = D == 0;
eqn5 = E == 0;
eqn6 = F == 0;
[G,H] = equationsToMatrix([eqn1, eqn2, eqn3, eqn4, eqn5, eqn6], [a, b, c, d, e, f])
G = 
H = 
X = linsolve(G,H)
X = 
x = [1;s;s^2;s^3;s^4;s^5]
x = 
N3 = transpose(X)*x
N3 = 
hold on
fplot(N3,[-1 1])
ylim([-1 1]) %<=====================

카테고리

Help CenterFile Exchange에서 Assumptions에 대해 자세히 알아보기

제품


릴리스

R2022b

Community Treasure Hunt

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

Start Hunting!

Translated by