How to use a shapefile to extract regions outside the shapefile?

1 次查看（过去 30 天）

Raka Mukherjee 2020-1-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/499746-how-to-use-a-shapefile-to-extract-regions-outside-the-shapefile

评论： KSSV 2020-1-20

Can anyone help me in extracting only the regions outside a shapefile? I have gone through many documentation and answers in matlab central but did not find a solution to this.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

KSSV 2020-1-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/499746-how-to-use-a-shapefile-to-extract-regions-outside-the-shapefile#answer_409556

Read the shape file using shaperead. This has single/ multiple regions.
Pick one closed region fromt he shape file
Take the grid and shapefile region, use inpolygon to get the points lying outside and inside the closed region .
With the help of indices get what you want.

2 个评论
显示无隐藏无

KSSV 2020-1-20

Raka Mukherjee comented:

Thank you for your answer but I wanted to use one particular world shapefile to extract the outside part of the shapefile for any image, so the closed region cannot be constant. Is that possible?