I am trying to plot my spline with clamped conditions and I am not sure why it is not letting me plot

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Chloe
Chloe 2019-11-22
回答： Walter Roberson 2019-11-22
%% clamped boundary conditions -0.5 to 0.5
t = [160 180 195 225 250 280 300].';
y = [ 78.3 81.4 84.5 85.1 89.3 91.7 94.8].';
cs = spline(t,[-0.5 y 0.5]);
xx = linspace(160,300,50);
plot(t,y,'o',xx,ppval(cs,xx),'-');

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采纳的回答

Joe Vinciguerra
Joe Vinciguerra 2019-11-22
%%clamped boundary conditions -0.5 to 0.5
t = [160 180 195 225 250 280 300];
y = [78.3 81.4 84.5 85.1 89.3 91.7 94.8];
cs = spline(t,[-0.5 y 0.5]);
xx = linspace(160,300,50);
plot(t,y,'o',xx,ppval(cs,xx),'-');

更多回答（1 个）

Walter Roberson
Walter Roberson 2019-11-22
%% clamped boundary conditions -0.5 to 0.5
t = [160 180 195 225 250 280 300].';
y = [ 78.3 81.4 84.5 85.1 89.3 91.7 94.8].';
cs = spline(t,[-0.5; y; 0.5]); %changed because y is column vector
xx = linspace(160,300,50);
plot(t,y,'o',xx,ppval(cs,xx),'-');

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