Mask an area with M-Map

Anyone familiar with M-Map mapping package? I have a question about masking.

So I managed to make contour from a scattered data in the Pacific Ocean and plot it using M_Map. However, the contour extended to the Atlantic and Indian Ocean. I want to mask those areas so that the only contour left is only the one in the Pacific Ocean. How should i do that?

Thanks!

[darova]

Do you have the data? I like pictures

[ahamahoru]

Hi! Here is my picture. I would like to mask the ocean contour in the Atlantic Ocean, Indian Ocean, Indonesian, Philippines, and some parts between Japan and Asian mainland.

[ahamahoru]

I've checked M-Map user guide and the examples but still no clue

[darova]

Do you have these boundaries (Pacific Ocean)?

[ahamahoru]

Do you mean that i need to include those areas? Yes I do, this is roughly the result that i want to produce but i don't know how to do that using M_Map package

[darova]

Can you attach the data?

[ahamahoru]

Here it is. The data consists of 3 columns [lat lon value] from 87 stations accross the Pacific Ocean. Thanks for the help!

[darova]

What should i do with this?

[ahamahoru]

interpolate the scattered data to the whole pacific, but what i want is to mask the area, the scattered data is not my problem right now. do you have any idea on how to mask with M-Map?