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From: Philosophaie on 3 Aug 2010 10:26
I need to draw a line between data points so that I can get a "Data Fitting" linear or polynomial equation. This will not draw a line between data points even if I have '-b' in the plot.

ra(1900)=1*15+22.6/60
ra(1950)=1*15+48.8/60
ra(1990)=2*15+21.3/60
ra(2000)=2*15+31.8/60
ra(2010)=2*15+43.6/60
ra(2050)=3*15+47.6/60

hold on;
for k=1900:10:2050
if ra(k)~=0
plot(k,ra(k),'-b');
end
end
From: John D'Errico on 3 Aug 2010 10:43
"Philosophaie" <ertlejack(a)sbcglobal.net> wrote in message <i398ts$2a6$1(a)fred.mathworks.com>...
> I need to draw a line between data points so that I can get a "Data Fitting" linear or polynomial equation. This will not draw a line between data points even if I have '-b' in the plot.
>
> ra(1900)=1*15+22.6/60
> ra(1950)=1*15+48.8/60
> ra(1990)=2*15+21.3/60
> ra(2000)=2*15+31.8/60
> ra(2010)=2*15+43.6/60
> ra(2050)=3*15+47.6/60
>
> hold on;
> for k=1900:10:2050
> if ra(k)~=0
> plot(k,ra(k),'-b');
> end
> end

Learn to use matlab as it is designed to be used.

k = [1900 1950 1990 2000 2010 2050];
ra = [1*15+22.6/60,1*15+48.8/60, ...
2*15+21.3/60, 2*15+31.8/60, ...
2*15+43.6/60, 3*15+47.6/60];

plot(k,ra,'-b')

Read the manual. Start with the tutorials.

John
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