How can I find the exact value of the corresponding point in specific longitude and latitude?

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Farshid Daryabor 2019-10-18

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评论： Farshid Daryabor 2019-10-21

I have problem to extract exact value in projection coordinate, I actually want to extract the exact value of the point with a specific latitude and longitude (e.g., lat=45.2 and lon=28.7) from the attached data. I really appreciate anybody can help.

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Andrei Bobrov 2019-10-18

What is it xy.mat?

Andrei Bobrov 2019-10-18

编辑：Andrei Bobrov 2019-10-18

comment by Farshid Daryabor:

I really appreciate your prompt response

"xy.mat" are the projection 'x' and 'y' coordinate in meters.

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回答（1 个）

Andrei Bobrov 2019-10-18

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编辑：Andrei Bobrov 2019-10-18

在 MATLAB Online 中打开

load('data.mat');load('lat.mat');load('lon.mat');load('xy.mat');
F1 = scatteredInterpolant(LAT,LON,data)
F2 = scatteredInterpolant(LAT,LON,xx);
F3 = scatteredInterpolant(LAT,LON,yy);
lat=45.2;
lon=28.7;
out = [F1(lat,lon),F2(lat,lon),F3(lat,lon)];

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Andrei Bobrov 2019-10-18

Yes.

Farshid Daryabor 2019-10-21

Dear Andrei,

it's weird for me, the power of values derived from "out = [F1(lat,lon),F2(lat,lon),F3(lat,lon)]" is compeltly different from the expected power from "var = F1.Values". For instance,

>>max(var)

5.9794e+03

While

>>max(out)

5.9794e+06

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