need help to plot x,y data points with 'o' without line and y_hat smooth graph

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Ahmed
Ahmed 2020-12-2
回答： Chirag Nighut 2020-12-14
function [m,n] = exp_n(x,y)
X=x;Y=log(y);
Pn=polyfit(X,Y,1);
n=Pnfit_sq(1,1)
m=exp(Pnfit_sq(2))
tau = 1/a*-1
y_hat=c*exp(a*x);
end
%x=[0 .5 1 1.5 2 2.5 3 3.5 4 4.5 5];
%y=[0 -5.27 -8.10 -8.46 -6.38 -1.84 5.15 14.59 26.48 40.83 57.63];
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KSSV
KSSV 2020-12-2
function y_hat = exp_n(x,y)
X=x;Y=log(y);
Pn=polyfit(X,Y,1);
n=Pnfit_sq(1,1)
m=exp(Pnfit_sq(2))
tau = 1/a*-1
y_hat=c*exp(a*x);
end
plot(x,y_hat,'-o')
%x=[0 .5 1 1.5 2 2.5 3 3.5 4 4.5 5];
%y=[0 -5.27 -8.10 -8.46 -6.38 -1.84 5.15 14.59 26.48 40.83 57.63];

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回答（1 个）

Chirag Nighut
Chirag Nighut 2020-12-14
You can use the plot function and use an option for styling the line plot to show the line as -o
plot(x,y_hat,'-o')
Above line of code should help.
To know more about plot line styles and other options please refer the following link:
https://www.mathworks.com/help/matlab/ref/plot.html#btzpnds-1

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