Trying to produce a plot of X vs P, using a for loop

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Collin McKenzie
Collin McKenzie 2022-2-20
回答： Anshika Chourasia 2022-2-24
I'm fairly new to this, and I am trying to find forces at a variety of different points from 0 to 750. I have a for loop set up to do this, but the code only produces one value for x, and a blank plot. Looking for any help to point me in the right direction, or let me know what I could be doing wrong. Thanks.
clear;
clc;
P=zeros(1,750);
theta=zeros(1,750);
L=zeros(1,750);
F=zeros(1,750);
W=10;
for x = 1:750
theta(x)=atand(0.4/x);
L(x)=0.4/(sind(theta(x)));
F(x)=(W*0.5*9.8*cosd(theta(x))/L(x));
P(x)=F(x)*sind(theta(x));
end
plot(x,P(x));

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回答（1 个）

Anshika Chourasia
Anshika Chourasia 2022-2-24
Hi Collin,
According to my understanding, in your code snippet x contains a singular value and you’re trying to plot a single point.
To plot a set of coordinates connected by line segments specify X and Y as vectors of the same length in the "plot(X, Y)" function. Please refer this link for more information related to 2-D line plot.

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