How to filter the required coordinates which consist with same elevation?

Hi there,

I have a netCDF dataset which consists of longitudes (1xN), latitudes (Mx1) and different elevations (MxN). I need to filter the lat/lon coordinates which are having zero (0 m) elevation and save those coordinates in a seperate text file.

I have used following line of codes to extract the netCDF data, but struggling the filtering part.

filename = 'elevations.nc';

elev = ncread(filename, 'elevation')';
lon  = ncread(filename, 'lon')';
lat  = ncread(filename, 'lat');

I would greatly appreciate anyone can help me to solve this problem.

Thank you.

Answer 1

[KSSV]

filename = 'elevations.nc';
elev = ncread(filename, 'elevation')';
lon  = ncread(filename, 'lon')';
lat  = ncread(filename, 'lat');

[c,h] = contour(lon,lat,elev,'showtext','on','LevelList',0) ;

YOu have your o contour coordinates in c.

[Ravindu Lokuliyana]

That was quick.

Thanks a lot.