How to display the data points on my graph?

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Cheng-Han Yang
Cheng-Han Yang 2019 年 3 月 21 日
回答済み: Kelly Kearney 2019 年 3 月 21 日
filename='data3.txt';
headlines=0;
delim='\t';
B=importdata(filename,delim,headlines);
t=B(:,1);
y=B(:,2);
fun = @(x,t)x(1)*t.^3 + x(2)*t +6;
x0=[1 1];
x=lsqcurvefit(fun, x0, t, y);
scatter(t,y);
fprintf('Function fitted is y = %5.3f x^3 + %5.3f x + 6\n', x(1), x(2));
fplot(@(t)x(1)*t.^3 + x(2)*t +6, [B(1,1) B(10,1)]);
The above is my code. The scatter command works as usual when I get rid of the fplot command, but fplot seems to overwrite the scatter part and does not show me the data points anymore.
Thanks in advance.

採用された回答

Kelly Kearney
Kelly Kearney 2019 年 3 月 21 日
Add a hold after your scatter plot:
scatter(rand(10,1), rand(10,1));
hold on
fplot(@(x) x, [0 1])

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