Geomask error for polygons

[ostriz2]

Hi,
I'm new to CDT and new to GitHub. I am trying to write my thesis on climate change with the help of Matlab and CDT…
And I found out that the geomask does not work well when entering multiple countries = polygons (at least according to the instructions).

Therefore, instead of the part in the geomask.m function:

indv = lonv > 180;
lonv(indv) = lonv(indv) - 360;

I suggest using:

% The following part of the code (lonv correction) was made by Tomáš Poláček
% Check if lonv is of type cell
if iscell(lonv)
    % Iterate over individual rows
    for i = 1:numel(lonv)
        % If the given line contains double data
        if isnumeric(lonv{i})
            indv = lonv{i} > 180;
            lonv{i}(indv) = lonv{i}(indv) - 360;
        end
    end
else
    % If lonv is not of cell type, it is a different variable type,
    % we perform the operation on the entire lonv (if it is of type double)
    if isnumeric(lonv)
        indv = lonv > 180;
        lonv(indv) = lonv(indv) - 360;
    end
end

There is also inaccuracy in CDT help (geomask):
% For this sample 1 degree resolution grid:
[Lat,Lon] = geogrid;

(geogrid is not defined function)

So maybe it will be better to use something like:
[Lon,Lat] = meshgrid(lon, lat);

Thank you in advance for your response and possible correction of my statement.