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

Asked by Farshid Daryabor on 18 Oct 2019

Latest activity Commented on by Farshid Daryabor on 21 Oct 2019

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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.

2 Comments

Andrei Bobrov on 18 Oct 2019

What is it xy.mat?

Andrei Bobrov on 18 Oct 2019

comment by Farshid Daryabor:

I really appreciate your prompt response

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

1 Answer

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Answer by Andrei Bobrov on 18 Oct 2019

Edited by Andrei Bobrov on 18 Oct 2019

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)];

3 Comments

Andrei Bobrov on 18 Oct 2019

comment by Farshid Daryabor:

Dear Andrei

What do you mean 'lon' and 'lat' in the following comment, is especific lon & lat for example lat=45.2 and lon=28.7?

out = [F1(lat,lon),F2(lat,lon),F3(lat,lon)];

Andrei Bobrov on 18 Oct 2019

Yes.

Farshid Daryabor on 21 Oct 2019

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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