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How can I get US dry land border coordinates(Lat. and Lon)?

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Behrooz Daneshian
Behrooz Daneshian el 20 de Abr. de 2023
Respondida: Supraja el 5 de Mayo de 2023
Hi all,
I aim to create contour lines outling a specific parameter on US map.Hence, I need to create mesh on the maps first. This stage can be done by meshgrid function based on the bounding box of US. However, I need to check that each node of the grid lies inside the US map so that I would not have contour lines outside the US. For this, I need to know the ploygone of the US border. Can anyone help me with this regard?
I have been stucked at this stage for more than 3 weeks!
  2 comentarios
Walter Roberson
Walter Roberson el 20 de Abr. de 2023
What do you want to have happen for the places where the border is in water, such as in some of the Great Lakes or the St Laurence Seaway ?
Behrooz Daneshian
Behrooz Daneshian el 20 de Abr. de 2023
Editada: Behrooz Daneshian el 20 de Abr. de 2023
I dont want them. Since the parameter that I aim to show with contour lines, is just for dry land.
I mean I just need a simple polygon of the US border (provided that I can access to the Lat and Lon of the points forming the polygon).

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Respuestas (1)

Supraja
Supraja el 5 de Mayo de 2023
This function returns a logical array describing the landness of any given lat/lon arrays. Requires Matlab's Mapping Toolbox.

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