How to get data only for specific country?

I have data ranging from latitude (0 to 40) and longitude (60 to 100), clearly this data has india + oceans surrounding it. I want the matrix to show values only for India and omit rest of the values.

Answer 1

[Jan]

At first you need a data set for the borders of India. A short web search reveals e.g.

• http://www.naturalearthdata.com/
• http://www.gadm.org/country
• http://diva-gis.org/gdata
• ... Search by your own for more resources ...

Now I assume inpolygon is the next step to determine the points inside India.