How to extract data from reverse quiver plot?

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Abbie
Abbie 2014-11-23
评论： Adam Danz 2020-4-16
Hi,
I have an original quiver plot. My interest is to extract the data (x-reverse, y-reverse, u-reverse, v-reverse) from the figure with reverse x-direction, as shown in Figure B.
quiver (x, y, u, v) %original quiver plot
set (gca,'XDir','reverse') %reverse in x-direction
By simply change the original x to –x and original u to –u will cause to the undesired change of x-coordinates (-30 to 30 in Figure B).
Can you please help me on how to achieve my objective?
Thanks so much for you help.
  1 个评论
Adam Danz
Adam Danz 2020-4-16
Instead of flipping the x axis direction, flip the sign of the x-component of the quiver vectors.
quiver (x, y, -u, v)

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