Convert these lines to Curves

N = [5:5:10 20:30:80];

t = (0:0.2:1).';

U = [0 0 0 0 0;

-0.203 -0.2045 -0.2094 -0.2248 -0.2411;

-0.8334 -0.8742 -0.9593 -1.2573 -1.6266;

-1.9722 -2.1899 -2.6840 -4.737 -7.9306;

-3.7592 -4.51 -6.3789 -16.1119 -35.5583;

-6.4136 -8.4597 -14.1636 -52.4222 -148.671];

hp = plot(t,U,'-');

lstr = cell(numel(N),1);

title('Effect of Radiation on Velocity')

for k = 1:numel(N)

lstr{k} = sprintf('N = %d',N(k));

end

legend(hp,lstr,'location','southwest')

Please I need assistance in converting the lines to curves

Answer 1

[Fabio Freschi]

You can interpolate your data using interp1.

Warning: the interpolation may be not accurate for your trend, in this case is only an "educated guess".

clear variables, close all

N = [5:5:10 20:30:80]; 
t = (0:0.2:1).';
 
U = [0 0 0 0 0;
    -0.203 -0.2045 -0.2094 -0.2248 -0.2411;
    -0.8334 -0.8742 -0.9593 -1.2573 -1.6266;
    -1.9722 -2.1899 -2.6840 -4.737 -7.9306;
    -3.7592 -4.51 -6.3789 -16.1119 -35.5583;
    -6.4136 -8.4597 -14.1636 -52.4222 -148.671];
figure, hold on
hp = plot(t,U,'o');

title('Effect of Radiation on Velocity')

% use a finer sampling of t vector
tint = (0:0.02:1);

% interpolate
Uint = interp1(t,U,tint,'pchip');

% restart color order
set(gca,'ColorOrderIndex',1);

% plot
hp = plot(tint,Uint,'-');

% legend
lstr = arrayfun(@(x)['N = ',num2str(x)],N,'UniformOutput',false);
legend(hp,lstr,'location','southwest')

[Maduka]

Thanks, I appreciate, can I remove those markers?

[Fabio Freschi]

simply comment out the first plot