Create a graph using ITA method

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Lakshi
Lakshi 2019-2-8
I used following codes to create graph using ITA method.So, how can I increase the length of two lines near 1:1 line. Also how can I create vertical lines in -1.5 and 1.5 points.
Codes :-
dataset=xlsread('Allai Tank - SPI.xlsx','SPI 12','B3:B49');
piece = 2;
xmin=min(dataset);
xmax=max(dataset);
m = length(dataset);
if mod(m,2)~=0;
dataset=dataset(2:end);
m=m-1;
end
n=m/2;
x=dataset(1:n);
x=sort(x);
meanx=mean(x);
y=dataset(n+1:m);
y=sort(y);
Dv = 10*(y-x)/meanx;
D = mean(Dv);
k = length(Dv);
pin = k/piece;
for ii = 1:piece-1
num(ii) = floor(ii*pin);
end
num(piece) = n;
arrspl{1} = Dv(1:num(1));
for ii = 2:piece
arrspl{ii} = Dv(num(ii-1)+1:num(ii));
end
%Dvpie = arrspl{ii}
for ii = 1:piece
Dmm(ii) = mean(arrspl{ii});
end
if figure~=0
plot(x,y,'.','markersize',15);
hold on
axis([xmin*2.5 xmax*1.5 xmin*2.5 xmax*1.5])
plot([xmin*2.5,xmax*4],[xmin*2.5,xmax*4]);%1:1 line
% 10%Ïß
A=meanx*1;
plot([A,xmax*2+A],[0,xmax*2],'-','color',[0.23 0.695 0.125]);
plot([0,xmax*2],[A,xmax*2+A],'-','color',[0.93 0.695 0.125]);
end

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