for t=0:1:25if t<5 v=(0.1553567*t^6)-(2.0416*t^5)+(9.1837*t^4)-(14.829*t^3)-(1.3704*t)+(32.821*t)-1.3155; plot(t,v,'b+-') hold onendif t>=5&&t<15.4 v=(0.003980879*t^5)-(0.2247*t^4)+(4.8682*t^3)-(50.442*t^2)+(254.67*t)-430.66; plot(t,v,'b+-') hold onendif t>=15.4 v=-(0.073*t^2)+(6.1802*t)+40.423; plot(t,v,'b+-') hold onendtitle('Camero Accelerating')xlabel('Time(s)')ylabel('Speed(mph)')xlim([0 30])ylim([0 160])endMATLAB: How do i get the graph to produce a straight line other than just points? Thanks.
graph plotting
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Incorporate the conditions you want into your if statement. To exit a fuction when a specific condition is met, use a return statement.
function v = f(time)if time<=5 Speed = 0.1553567*(time.^6)-2.0416*(time.^5)+9.1837*(time.^4)-14.829*(time.^3)-1.3703*(time.^2)+32.821*time-1.3155;elseif time>=5 && time<15.4 Speed = 0.003980879*(time.^5)-0.2247*(time.^4)+4.8682*(time.^3)-50.442*(time.^2)+254.67*time-430.66;elseif time <= 25 Speed =-0.073*(time.^2)+6.1802*time+40.423; else returnendv=Speed*0.47404;endAlthough it is slightly different in operation, you could try this:
A = [1 0 5 4; 2 0 5 4; 3 4 6 2];N = sum(A(:));X = randn(N,1)/12;Y = randn(N,1)/12;[R,C] = find(A>0);B = A(A>0);X = X + cell2mat(arrayfun(@(z,m)repmat(z,m,1),C,B,'UniformOutput',false));Y = Y + cell2mat(arrayfun(@(z,m)repmat(z,m,1),R,B,'UniformOutput',false));scatter(X,Y,[],randperm(N),'filled')axis(gca,'ij')colormap('winter')which generates this figure:
The main differences from your code is that it generates all values at once (in the vectors X and Y) rather than within a loop, and it also uses a different random position for each point (rather than applying one random value to all points at each step of the while-loop). The code assumes that all values of A are positive integers or zero.
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