Misaligned contour and base map

Hi People,

I am tying to contour a variable over a base map in the polar region. Although they look fine seperately, they seemed to be misaligned when put together like the image here (if you open the image in another tap, you shall see all of it)

My code is like such:

xi = linspace(min(lon_6c),max(lon_6c), 1000) ;
yi = linspace(min(lat_6c),max(lat_6c), 1000) ;
[Xi,Yi] = meshgrid(xi,yi) ;
F = scatteredInterpolant(lon_6c,lat_6c,temp_6c,'natural') ;
Zi = F (Xi,Yi) ;

figure

hold on

m_coast('patch',[1 .6 .5]);
m_grid('box','fancy','tickdir','in');
contour(Xi,Yi,Zi)

Please help :3

[Ankit Dutta]

The “contour” function is expected to map according to the x and y coordinates. From the images, it seems that –90 in the contour in Figure 3 is mapped to 90W on the base map in Figure 2. Since the contour is based on Xi, Yi inputs, is this the mapping that you are looking for?