# MATLAB: Variation in parameter w by plotting a graph

for loopplot

I am trying to plot a graph in order to show how the parameter w varies.I have used the following commands but there is an error saying that the vectors are in different length.Can anyone spot out what have I done wrong,please?
clear all; Unimodal=[28,42,46,49,52,55,58,61,64,68,82]; c=length(Unimodal) a=max(Unimodal) b=min(Unimodal) [~, ~, rank] = unique(Unimodal) w=[0.3,0.4] figure; for j=1:length(w) for i=1:c S(i)=Unimodal(i) R(i)=(S(i)-b)/(a-b) F(i)=(rank(i)-1)/(c-1) J(i)=w(j)*R(i)+(1-w(j))*F(i) scaling(i) =7 * mat2gray(J(i)) plot(Unimodal,scaling); xlabel('Prices'); ylabel('Expensiveness'); title('Varying in w in Unimodal') end end ``clear all; close all;Unimodal = [28,42,46,49,52,55,58,61,64,68,82]; c = length(Unimodal) ;a = max(Unimodal) ;b = min(Unimodal) ;[~, ~, rank] = unique(Unimodal) ;w = [0.3,0.4];for j = 1:length(w)     for i = 1:c         S(i) = Unimodal(i);        R(i) = (S(i)-b)/(a-b);        F(i) = (rank(i)-1)/(c-1) ;        J(i) = w(j)*R(i)+(1-w(j))*F(i) ;        scaling(i,j) = 7 * mat2gray(J(i)); %saving on (i,j) position of scaling    endend%plotting outside loopfigure(); plot(Unimodal,scaling); xlabel('Prices'); ylabel('Expensiveness'); title('Varying in w in Unimodal') legend('w1','w2');``