How to draw and connect three points

Asked by Guido Pastore on 19 Mar 2019

Latest activity Answered by Star Strider on 19 Mar 2019

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Give three matrices with one row and two columns (1x2). Each matrix corresponds to a point and the two columns of each matrix correspond to the x y coordinates of the respective point. So I have three points in total. How can I draw these three points on a graph, link them through segments and label them?

1 Comment

Rik on 19 Mar 2019

What have you tried so far?

3 Answers

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Answer by KSSV on 19 Mar 2019

x = rand(1,3) ; 
y = rand(1,3) ; 
plot(x,y) ; 
n = 1:3 ;
text(x,y,num2str(n'))

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Answer by Guido Pastore on 19 Mar 2019

Head = [HeadX HeadY HeadZ];

Head_1 = Head(1,1:2);

HeadX_1 = 250.8390;

HeadY_1 = 643.3690;

scatter(HeadX_1, HeadY_1);

LRCollar = [LRCollarX LRCollarY LRCollarZ];

LRCollar_1 = LRCollar(1,1:2);

LRCollarX_1 = 264.4240;

LRCollarY_1 = 341.0450;

scatter(LRCollarX_1, LRCollarY_1);

Waist = [WaistX WaistY WaistZ];

Waist_1 = Waist(1,1:2);

WaistX_1 = 281.9030;

WaistY_1 = -94.8090;

scatter(WaistX_1, WaistY_1);

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Answer by Star Strider on 19 Mar 2019

Try this:

V1 = randi(9, 1, 2);                                % Vector #1
V2 = randi(9, 1, 2);                                % Vector #2
V3 = randi(9, 1, 2);                                % Vector #3
M = [V1; V2; V3; V1];                               % Repeat First Row To Complete The Triangle
figure
plot(M(:,1), M(:,2))
axis([0  10    0  10])
ptl = sprintfc('V_{%d}', 1:3);                      % Numbered Vectors
ptl = sprintfc('V(%.1f,%.1f)', M(1:end-1,:));       % Vector Coordinates
text(M(1:end-1,1), M(1:end-1,2), ptl)

Experiment to get the result you want.

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