how to convert a latitude and Longitude(degree units) to X Y(length units)?

Greetings everyone!

I am trying to simulate trajectory of UAV, for this I have used TIFF file for initial simulations that returns X Y coordinates (using ginput command), it worked well but when i tried to use geographic axes (geoplot) that returns latitude and longitude, I couldn't simulate proper trajectory as the units differ so i want to convert latitude and longitude to X and Y respectively.

NOTE: I have tried using deg2km or grn2eqa command but they dont give actual X/Y coordinates as shown by TIFF file, images have been given for refernce, same point has been selected to get readings

[Walter Roberson]

Are you using readgeoraster() https://www.mathworks.com/help/map/ref/readgeoraster.html or geotiffread() https://www.mathworks.com/help/map/ref/geotiffread.html ?

If you are using either of those, what is class() of the second output of the function (the R output) ?

[Walter Roberson]

https://www.mathworks.com/help/map/ref/map.rasterref.geographiccellsreference.longitudetointrinsicx.html

https://www.mathworks.com/help/map/ref/map.rasterref.geographiccellsreference.latitudetointrinsicy.html

possibly

[Hussain Ali]

I have opened tiff file using mapview for the image attached above.

But the piece of code that i am using is:

[A,map] = imread('ISTLL.tif',1);% read ISTLL.tif file
imshow(A,map);
grid on; hold on;
%choose area
[x,y] = ginput;%select points specifying an area

[Walter Roberson]

I suggest you

[A, R, map] = readgeoraster('ISTILL.tif');
class(R)

[Hussain Ali]

@Walter Roberson actually i want to use geogrpahic axes which gives me an advantage of panning/zooming or adjusting before taking inputs.

I used tiff file to build my code (trajectory of UAV) and ensure its proper working.

SO I WANT TO CONVERT LATITUDE/LONGITUDES FROM GEOAXES TO X/Y COORDINATES

[Walter Roberson]

In https://www.mathworks.com/matlabcentral/answers/724822-how-to-convert-a-latitude-and-longitude-degree-units-to-x-y-length-units#comment_1280392 I posted links to functions that convert from lat/long to X/Y coordinates. However, whether those functions are appropriate depends upon the datatype of the raster reference R . I do not know whether they are the correct functions for your purposes because you have not shown me the output of the class(R ) that I asked for.

Please execute

[A, R, map] = readgeoraster('ISTILL.tif');
class(R)

and tell me what the output is.

Answer 1

[Khush Bakhat Sawaiba]

Hussain Ali Can I get your email id so that, I may discuss this query to you .Here I am unable to attach some files