How to merge multiple xyz files into 1 large array

Question

回答： meghannmarie 2019-10-21

I have a set of 501 XYZ files which I load in as

for k = 1:501
    
    % AIS SEC data
    
    AIS_SEC{k} = importdata(['AIS_SEC(' num2str(k) ').xyz']);
    
end

This generates an 1x501 cell array in which all data are stored (see attachment). How can I merge all these data to have 1 large XYZ file?

For example, to concentrate X data, I tried:

for k = 1:501
    my_field = sprintf('X%d', k);
    variable.(my_field) = ([AIS_SEC{1,k}.data(:,1)]);
end

BUT: Dot indexing is not supported for variables of this type.

Thanks!

Answer 1

meghannmarie 2019-10-21

Not all the cells in AIS_SEC are structures. For example AIS_SEC{1,33} is a cell array with a string in it.

You can skip those cells:

for k = 1:501
    my_field = sprintf('X%d',k);
    x = AIS_SEC{1,k};
    if isstruct(x)
        variable.(my_field) = ([x.data(:,1)]);
    end
end