generating Sine wave in Graph

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Bhushan Ravindra Attarde
Bhushan Ravindra Attarde el 13 de Mayo de 2020
Respondida: Mehmed Saad el 13 de Mayo de 2020
Hi, I am trying to plot the following graph :
yi = [3.0 -2.9 4.6 -4.4 4.5]';
ti = [0 1.1 2.2 3.3 4.4]';
plot(ti,yi,'g');
I am getting graph as in figure 1. That is it is triangular wave, but I want sine wave as shown in figure 2.
Can you please help me with it?
Figure 2:
Figure 1:

Respuestas (1)

Mehmed Saad
Mehmed Saad el 13 de Mayo de 2020
You have 5 data points and you ve to interpolate the data between them
see interp1 (focus on methods)
For plotting in blue cross
plot(ti,yi,'bx','MarkerSize',20,'LineWidth',2)
Now interpolated data and save there result in variable tq and yq
% Your interpolation code
Now plot tq and yq on same graph
hold on
plot(tq,yq,'g--','LineWidth',2)
where tq and yq are your interpolated data

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