Latitude and Longitude Data to Universal Transverse Mercator (UTM)

Hi,

How can i convert this spreadsheet with xy gps coordinates (Latitude and Longitude) to Universal Transverse Mercator (UTM), in meters?

Answer 1

[André Luiz Lourenço]

Update: Please see this doc page: https://www.mathworks.com/help/map/working-in-utm-without-a-map-axes.html

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Matlab has his own functions to deal with it.

First you need to get the utm zone from the coordinates

p1 = [lat,lon];
z1 = utmzone(p1)

Then you must get the geoid of this zone and construct the projection structcture using the following functions

[ellipsoid,estr] = utmgeoid(z1);
utmstruct = defaultm('utm');
utmstruct.zone = z1;
utmstruct.geoid = ellipsoid;
utmstruct = defaultm(utmstruct);

Finally you use mfwdtran to convert coordinates

[x,y] = mfwdtran(utmstruct,lat,lon)

This explanation content was found in reference: https://www.mathworks.com/help/releases/R2020a/map/working-in-utm-without-a-map-axes.html

[Sérgio Querido]

Thank you!

[Honey]

Hello .

I have a problem with this code in zone part. I know that my lat and lon data is located in 40 zone of north hemisphere. But this code is showing me z1= 40S. what's the matter?

[Kristoffer Walker]

The above codes do not work when I use lat=29 and lon=-126

Answer 2

[KSSV]

Load the data into matlab and use the following function to convert degrees to utm.

https://in.mathworks.com/matlabcentral/fileexchange/10915-deg2utm

YOu can load data from excel to matlab using xlsread.

[Sérgio Querido]

close all clear all workspace

%% ext='.xlsx'; filename1='João Carlos.xlsx'

%% Leitura Ficheiros

data_MOM1=xlsread(filename1,'MOMENTO1');

datautm_MOM1= wgs2utm(data_MOM1)

What's wrong in the code?

"Error using wgs2utm (line 68) Wrong number of input arguments

Error in newroutine (line 10) datautm_MOM1= wgs2utm(data_MOM1)"

[KSSV]

    Lat = data_MOM(:,1) ;   % is X latitude? check 
    Lon = data_MOM(:,2) ;    % is Y longitude? Check
    [x,y,utmzone]= wgs2utm(Lat,Lon) ;