MATLAB: Need help with Operands operators must be convertible to logical scalar values

logical scalarMATLABoperands

Receving this error:

Operands to the || and && operators must be convertible to logical scalar values.

Error in DriverProgram (line 59)

if x2 >= 0 && x2 <= 8

{code}
if x2 >= 0 && x2 <= 8
   x2_double_prime = (w-d)/m;
else
   x2_double_prime= (w-d-b-r)/m;
end

Best Answer

use & instead of &&

Related Solutions

MATLAB: ODE45 arguments not working

 
%%
[t2, v]=ode45(@ODE4590kg,[0:0.1:300],[0,0]);  %Line 85 %FUNCTION CALLING BEFORE FUNCTION DEFINITION
xx2_prime = v(:,1); % all rows and column 1 of u
xx2 = v(:,2); % all rows and column 2 of u
ma = 90;
gr = 9.81; %Line 90
we= ma*gr;
co= we/55^2;
dr= co.*(xx2_prime).^2;
bu= 100.*(xx2-8);
re= 3.*(xx2_prime);
if xx2 >= 0 & xx2 <= 8
   xx2_double_prime = (we-dr)./ma;
else
   xx2_double_prime= (we-dr-bu-re)./ma;
end
figure(2)
subplot(3,2,2) % first 2x1 subplot  %Line 115
plot(t2,xx2),title('90 kg ODE 45'),xlabel('Time'),ylabel('Position'),axis([0,300,0,30])
subplot(3,2,4) % second 2x1 subplot
plot(t2,xx2_prime),title('90 kg ODE45'),xlabel('Time'),ylabel('Velocity'),axis([0,300,-20,20])
subplot(3,2,6) % first 2x2 subplot
plot(t2,xx2_double_prime),title('90 kg ODE 45'),xlabel('Time'),ylabel('Acceleration'),axis([0,300,-20,10])
function [vprime] = ODE4590kg(t2,v ) %function definition
% Set known variables
vprime =[0;0];
m = 90;
g = 9.81;
W= m*g;
c= W/55^2;
D= c.*(v(1)).^2;
B= 100*(v(2)-8);
R= 3.*(v(1));
if v(2) >= 0 && v(2) <= 8
   vprime(1) = (W-D)/m;
   vprime(2) = v(1);
else
   vprime(1) = (W-D-B-R)/m;
   vprime(2) = v(1);
end
end

MATLAB: How to use “OR” in this situation? I want it to show if x==2 or d~=0

if x==2 || d~=0 
  disp('Given value is a prime!')
end

Best Answer

Related Solutions

MATLAB: ODE45 arguments not working

MATLAB: How to use “OR” in this situation? I want it to show if x==2 or d~=0

Related Question