Warning: Error creating or updating Surface Error in value of property XData Array is wrong shape or size

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When I run this code I get the Warning: Error creating or updating Surface Error in value of property XData Array is wrong shape or size, pls help

P=[7.35991,-1.0882;%C Lineal C-D 1

7.16447,-0.98211;%D Lineal C-D/Noveno grado D,E,F,I,J,K,L,M,N,O 2

6.91296,-0.89726;%E Noveno grado D,E,F,I,J,K,L,M,N,O 3

6.62118,-0.845;%F Noveno grado D,E,F,I,J,K,L,M,N,O 4

6.28584,-0.81016;%I Noveno grado D,E,F,I,J,K,L,M,N,O 5

5.88954,-0.79709;%J Noveno grado D,E,F,I,J,K,L,M,N,O 6

5.54114,-0.79274;%K Noveno grado D,E,F,I,J,K,L,M,N,O 7

5.2,-0.8;%L Noveno grado D,E,F,I,J,K,L,M,N,O 8

4.90531,-0.82883;%M Noveno grado D,E,F,I,J,K,L,M,N,O 9

4.6054,-0.8916;%N Noveno grado D,E,F,I,J,K,L,M,N,O 10

4.41709,-0.94739;%O Noveno grado D,E,F,I,J,K,L,M,N,O/Tercer grado O,Q,R 11

4.08276,-1.08392;%Q Tercer grado O,Q,R 12

3.8662,-1.25019;%R Tercer grado O,Q,R/ Lineal R-S 13

3.69636,-1.71736;%S Lineal R-S 14

1.05625,-1.72669;%W Lineal S-W/ Tercer grado W,Z,A1 15

1.04708,-1.57082;%Z Tercer grado W,Z,A1 16

1.02791,-1.39335;%A1 Tercer grado W,Z,A1/ Tercer grado A1,B1,C1 17

0.99755,-1.31476;%B1 Tercer grado A1,B1,C1 18

0.93314,-1.24084;%C1 Tercer grado A1,B1,C1/ Tercer grado C1,D1,E1 19

0.86222,-1.20885;%D1 Tercer grado C1,D1,E1 20

0.71549,-1.33227;%E1 Tercer grado C1,D1,E1/ Cuarto grado E1,F1,H1,J1 21

0.69622,-1.46909;%F1 Cuarto grado E1,F1,H1,J1 22

0.68342,-1.60478;%H1 Cuarto grado E1,F1,H1,J1 23

0.67727,-1.73281;]%J1 Cuarto grado E1,F1,H1,J1 24

P = 24×2

7.3599 -1.0882 7.1645 -0.9821 6.9130 -0.8973 6.6212 -0.8450 6.2858 -0.8102 5.8895 -0.7971 5.5411 -0.7927 5.2000 -0.8000 4.9053 -0.8288 4.6054 -0.8916

% f1(x) = a1x+a2

F1A=[P(1,1) 1;

P(2,1) 1];

F1B=[P(1,2);

P(2,2)];

coef1=inv(F1A)*F1B;

fprintf("Polinomio 1 y=%fx + %f\n",coef1(1),coef1(2))

Polinomio 1 y=-0.542826x + 2.906954

% Función 2

F2A = [P(2,1)^9 P(2,1)^8 P(2,1)^7 P(2,1)^6 P(2,1)^5 P(2,1)^4 P(2,1)^3 P(2,1)^2 P(2,1) 1;

P(3,1)^9 P(3,1)^8 P(3,1)^7 P(3,1)^6 P(3,1)^5 P(3,1)^4 P(3,1)^3 P(3,1)^2 P(3,1) 1;

P(4,1)^9 P(4,1)^8 P(4,1)^7 P(4,1)^6 P(4,1)^5 P(4,1)^4 P(4,1)^3 P(4,1)^2 P(4,1) 1;

P(5,1)^9 P(5,1)^8 P(5,1)^7 P(5,1)^6 P(5,1)^5 P(5,1)^4 P(5,1)^3 P(5,1)^2 P(5,1) 1;

P(6,1)^9 P(6,1)^8 P(6,1)^7 P(6,1)^6 P(6,1)^5 P(6,1)^4 P(6,1)^3 P(6,1)^2 P(6,1) 1;

P(7,1)^9 P(7,1)^8 P(7,1)^7 P(7,1)^6 P(7,1)^5 P(7,1)^4 P(7,1)^3 P(7,1)^2 P(7,1) 1;

P(8,1)^9 P(8,1)^8 P(8,1)^7 P(8,1)^6 P(8,1)^5 P(8,1)^4 P(8,1)^3 P(8,1)^2 P(8,1) 1;

P(9,1)^9 P(9,1)^8 P(9,1)^7 P(9,1)^6 P(9,1)^5 P(9,1)^4 P(9,1)^3 P(9,1)^2 P(9,1) 1;

P(10,1)^9 P(10,1)^8 P(10,1)^7 P(10,1)^6 P(10,1)^5 P(10,1)^4 P(10,1)^3 P(10,1)^2 P(10,1) 1;

P(11,1)^9 P(11,1)^8 P(11,1)^7 P(11,1)^6 P(11,1)^5 P(11,1)^4 P(11,1)^3 P(11,1)^2 P(11,1) 1];

F2B = [P(2,2);

P(3,2);

P(4,2);

P(5,2);

P(6,2);

P(7,2);

P(8,2);

P(9,2);

P(10,2);

P(11,2)];

% Inversa

coef2 = inv(F2A) * F2B;

Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 3.573032e-17.

% Mostrar ecuación

fprintf("Polinomio 2 noveno grado y=%f x^9 + %f x^8 + %f x^7 + %f x^6 + %f x^5 + %f x^4 + %f x^3 + %f x^2 + %fx + %f \n",coef2(1),coef2(2),coef2(3),coef2(4),coef2(5),coef2(6),coef2(7),coef2(8),coef2(9))

Polinomio 2 noveno grado y=-0.010884 x^9 + 0.554546 x^8 + -12.517521 x^7 + 164.303711 x^6 + -1382.153954 x^5 + 7728.176185 x^4 + -28724.141729 x^3 + 68439.569989 x^2 + -94860.851589x +

%Función 3

F3A = [P(11,1)^2 P(11,1) 1;

P(12,1)^2 P(12,1) 1;

P(13,1)^2 P(13,1) 1]

F3A = 3×3

19.5107 4.4171 1.0000 16.6689 4.0828 1.0000 14.9475 3.8662 1.0000

F3B = [P(11,2);

P(12,2);

P(13,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef3 = inv(F3A)*F3B;

% Mostrar ecuación

fprintf("Polinomio 3 tercer grado y=%f x^2 + %fx + %f \n",coef3(1),coef3(2),coef3(3))

Polinomio 3 tercer grado y=-0.652415 x^2 + 5.953800x + -14.516795

%Función 4

F4A = [P(13,1) 1;

P(14,1) 1];

F4B = [P(13,2);

P(14,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef4 = inv(F4A)*F4B;

% Mostrar ecuación

fprintf("Polinomio 4 primer grado y=%fx + %f \n",coef4(1),coef4(2))

Polinomio 4 primer grado y=2.750648x + -11.884744

%FUNCION 5

F5A = [P(14,1) 1;

P(15,1) 1];

F5B = [P(14,2);

P(15,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef5 = inv(F5A)*F5B;

% Mostrar ecuación

fprintf("Polinomio 5 primer grado y=%fx + %f \n",coef5(1),coef5(2))

Polinomio 5 primer grado y=0.003534x + -1.730423

%FUNCION 6

F6A = [P(15,1)^2 P(15,1) 1;

P(16,1)^2 P(16,1) 1;

P(17,1)^2 P(17,1) 1];

F6B = [P(15,2);

P(16,2);

P(17,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef6 = inv(F6A)*F6B;

% Mostrar ecuación

fprintf("Polinomio 6 segundo grado y=%f x^2 + %fx + %f \n",coef6(1),coef6(2),coef6(3))

Polinomio 6 segundo grado y=-273.116608 x^2 + 557.456535x + -285.833771

%FUNCION 7

F7A = [P(17,1)^2 P(17,1) 1;

P(18,1)^2 P(18,1) 1;

P(19,1)^2 P(19,1) 1];

F7B = [P(17,2);

P(18,2);

P(19,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef7 = inv(F7A)*F7B;

% Mostrar ecuación

fprintf("Polinomio 7 segundo grado y=%f x^2 + %fx + %f \n",coef7(1),coef7(2),coef7(3))

Polinomio 7 segundo grado y=-15.204765 x^2 + 28.208039x + -14.323337

%FUNCION 8

F8A = [P(19,1)^2 P(19,1) 1;

P(20,1)^2 P(20,1) 1;

P(21,1)^2 P(21,1) 1];

F8B = [P(19,2);

P(20,2);

P(21,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef8 = inv(F8A)*F8B;

% Mostrar ecuación

fprintf("Polinomio 8 segundo grado y=%f x^2 + %fx + %f \n",coef8(1),coef8(2),coef8(3))

Polinomio 8 segundo grado y=-5.937094 x^2 + 10.208149x + -5.596746

%Funcion 9

F9A = [P(21,1)^3 P(21,1)^2 P(21,1) 1;

P(22,1)^3 P(22,1)^2 P(22,1) 1;

P(23,1)^3 P(23,1)^2 P(23,1) 1;

P(24,1)^3 P(24,1)^2 P(24,1) 1]

F9A = 4×4

0.3663 0.5119 0.7155 1.0000 0.3375 0.4847 0.6962 1.0000 0.3192 0.4671 0.6834 1.0000 0.3107 0.4587 0.6773 1.0000

F9B = [P(21,2);

P(22,2);

P(23,2);

P(24,2)];

% Resolver sistema de ecuaciones utilizando la inversa

coef9 = inv(F9A)*F9B;

% Mostrar ecuación

fprintf("Polinomio 9 tercer grado y=%f x^3 + %f x^2 + %fx + %f \n",coef9(1),coef9(2),coef9(3),coef9(4))

Polinomio 9 tercer grado y=11250.796421 x^3 + -23681.036876 x^2 + 16620.316136x + -3890.983181

%% Definir para cada función rango de x en que es válida

Deltax=0.01;

x1=[P(1,1):Deltax:P(2,1)];

x2=[P(2,1):Deltax:P(11,1)];

x3=[P(11,1):Deltax:P(13,1)];

x4=[P(13,1):Deltax:P(14,1)];

x5=[P(14,1):Deltax:P(15,1)];

x6=[P(15,1):Deltax:P(17,1)];

x7=[P(17,1):Deltax:P(19,1)];

x8=[P(19,1):Deltax:P(21,1)];

x9=[P(21,1):Deltax:P(24,1)];

%% Definición de funciones para graficar y su evaluación

f1=@(x)coef1(1)*x+coef1(2);

f2=@(x)coef2(1)*x .^9 + coef2(1)*x .^8 +coef2(2)*x .^7 + coef2(3)*x .^6 + coef2(4)*x .^5 + coef2(5)*x .^4 + coef2(6)*x .^3 + coef2(7)*x .^2 + coef2(8)*x + coef2(9);

f3=@(x)coef3(1)*x .^2 + coef3(2)*x + coef3(3);

f4=@(x)coef4(1)*x+coef4(2);

f5=@(x)coef5(1)*x+coef5(2);

f6=@(x)coef6(1)*x .^2 + coef6(2)*x + coef6(3);

f7=@(x)coef7(1)*x .^2 + coef7(2)*x + coef7(3);

f8=@(x)coef8(1)*x .^2 + coef8(2)*x + coef8(3);

f9=@(x)coef9(1)*x .^3 + coef9(2)*x .^2 +coef9(3)*x + coef9(4);

y1=f1(x1);

y2=f2(x2);

y3=f3(x3);

y4=f4(x4);

y5=f5(x5);

y6=f6(x6);

y7=f7(x7);

y8=f8(x8);

y9=f9(x9);

X=[x1,x2,x3,x4,x5,x6,x7,x8,x9];

Y=[y1,y2,y3,y4,y5,y6,y7,y8,y9];

% contorno y sólido de revolución

subplot(1,2,1)

cylinder(Y)

Warning: Error creating or updating Surface
Error in value of property XData
Array is wrong shape or size

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Answer 1

Walter Roberson on 12 Mar 2023

Open in MATLAB Online

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P=[7.35991,-1.0882;%C Lineal C-D             1
16447,-0.98211;%D Lineal C-D/Noveno grado D,E,F,I,J,K,L,M,N,O                  2
91296,-0.89726;%E Noveno grado D,E,F,I,J,K,L,M,N,O              3
62118,-0.845;%F Noveno grado D,E,F,I,J,K,L,M,N,O               4

column 1 of your P is strictly decreasing.

x1=[P(1,1):Deltax:P(2,1)]; 
x2=[P(2,1):Deltax:P(11,1)]; 
x3=[P(11,1):Deltax:P(13,1)];

Each of your x* variables has P of a lower index as the first end point, and P of a higher index as the second end point, and positive incremente Deltax. But your first column of P is strictly decreasing, so your x1 variables are all empty.

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Alfonso Fraustro Villarreal on 13 Mar 2023

You were right I was graphing backwards lol... thanks so much for the help man I delivered my project on time thanks!!!

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