Getting values using coordinates indexes

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SnovG 2015-6-8

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评论： K E 2015-8-5

I have a very simple question,

I have 3 matrices extracted from a netcdf file, latitude, longitude, and data values (Z). I would like to know the Z values corresponding to specific latitude and longitude points. How can I do this?

Thanks

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SnovG 2015-6-8

These are thress matrices with the same size, 2630x1083 double, it is actually remote sensing data in netcdf format. I want to get the values corresponding to the coordinates. thanks

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回答（1 个）

Chad Greene 2015-6-8

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You can do this a few ways. If you know the exact lat and lon you're interested in, say (30N,120E), it's simply

Z(lat==30 & lon==120)

Alternatively, you can use interp2.

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SnovG 2015-6-10

thank you!

K E 2015-8-5

Once you know the index to the lat/lon point you want, you can extract just the value there using ncread. In other words you don't have to pull the whole matrix into Matlab.

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