How to translate figure so that point1 [0 -1]' is located at the origin?

Question

MATLABhelp 2019-1-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/439980-how-to-translate-figure-so-that-point1-0-1-is-located-at-the-origin

评论： Star Strider 2019-1-16

采纳的回答： Star Strider

I began by plotting the original figure with the following code:

% Define coordinates of original graph

point1 = [0 -1]';

point2 = [1 1]';

point3 = [3 2]';

point4 = [3 0]';

point5 = [2 -1]';

point6 = [0 -1]';

points = [point1 point2 point3 point4 point5 point6];

plot_points = @(list_of_points) plot(list_of_points(1,:), list_of_points(2,:), '-o');

% Plot characteristics

plot(points(1,:), points(2,:), 'b')

axis([-1 3.5 -1 2]) % axis min and max

grid on

xlabel('x-axis')

ylabel('y-axis')

title('2D Cad Figure')

What can be done to translate figure so that point1 is located at the origin?

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Answer 1

Star Strider 2019-1-16

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/439980-how-to-translate-figure-so-that-point1-0-1-is-located-at-the-origin#answer_356627

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I am not certain what result you want.

One option is to add this line after the plot call:

axis(reshape([point1, point3]', 1, 4))

In context:

% Plot characteristics 
plot(points(1,:), points(2,:), 'b')
axis([-1 3.5 -1 2]) % axis min and max 
grid on
xlabel('x-axis')
ylabel('y-axis')
title('2D Cad Figure')
axis(reshape([point1, point3]', 1, 4))

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MATLABhelp 2019-1-16

Thanks for the reply, that is how the graph should look, but how would you plot both graphs on the same plot? The original plot, and the reshaped plot?