How to plot a quarter of a circle

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Griffin Polglaze
Griffin Polglaze 2020-7-22
评论： KSSV 2020-7-22
This question is most likely too vague to answer, but I am trying to plot the geometry of a quarter circle and am not too sure where to start. To plot the quarter circle, the radius is 5 and there is a text file that has an angle range between 90 to 0 degrees where each value is decreased by 1 degree, i.e. 90, 89, 88 ... 2, 1, 0. If anyone is able to help me figure out how I should approach this problem it would be greatly appreciated.

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回答（1 个）

KSSV
KSSV 2020-7-22
编辑：KSSV 2020-7-22
% Radius of circle
R = 1. ;
% center of cricle
C = [0. 0.] ;
% angle
th = 90:-1:0 ;
% points of cricle
xc = C(1)+R*cosd(th) ;
yc = C(2)+R*sind(th) ;
plot(xc,yc)
  2 个评论
Griffin Polglaze
Griffin Polglaze 2020-7-22
Thanks, but I need to read the text file and use the values from that to generate the plot
KSSV
KSSV 2020-7-22
Simple....load the data from test file using load / importdata. Use that data instead of th.

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