How to correct the alignment of quiver on a plot?

Question

Aditya Wahi 2017-7-7

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https://ww2.mathworks.cn/matlabcentral/answers/347698-how-to-correct-the-alignment-of-quiver-on-a-plot

编辑： Aditya Wahi 2017-7-21

采纳的回答： Chad Greene

My quiver plot is coming out to be misaligned. Its rotated or flipped or something like that. how do i make it right?

Please help me with this problem of mine. I use R2015a version of MATLAB.

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Answer 1

Chad Greene 2017-7-7

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That looks like Amery Ice Shelf appearing as tiny red arrows in the middle of the eastern Ross Sea. Comparing its shape to the true Amery ice shelf, it looks like the quiver grid has been rotated and mirrored. Tinker with combinations of rot90 and fliplr until the quiver grid is correctly positioned.

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Aditya Wahi 2017-7-13

编辑：Aditya Wahi 2017-7-13

Sir, is there a way to select any specific region's boundary, to analyze the data of just the points within?

I've downloaded the boundary files of Amery Ice Shelf, but its matrix size does not match that of mine, hence making it not overlap each other. What can be done about it?

Chad Greene 2017-7-13

It's hard to know exactly what you're trying to do. For any x,y points in your dataset you can use inpolygon to determine which points are within the boundaries of Amery Ice Shelf.

There's an example of how to do it for Wilkins Ice Shelf in the antbounds_data documentation here.

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