Error with movefile function: argument must contain a string

I am trying to use the movefile(filename, directory_pathway) function to move an image file into a different folder. I am using Matlab R2014a. When I run my program I get the following error: Argument must contain a string.

Here is my code:

function dataset_randomisor()

% Set data path (the folder in which the dataset is currently stored)
data_path = 'E:\20190618-f1\images_extracted_from_zebrafish_movies\20190618-f1_10-27-56';
training_dataset_path = 'E:\20190618-f1\images_extracted_from_zebrafish_movies\training_dataset';

% Find images
images = dir(data_path);

% Randomly select 100 images
for k=1:100
    img_index = randi(length(images));
    random_image = images(img_index);
    images(img_index) = []; % remove the selected image so that it doesn't get selected twice
    movefile({random_image.name},training_dataset_path);% move the selected image to the training dataset
end

end

Does anyone know what I'm doing wrong, and/or how I can fix it?

Answer 1

[Walter Roberson]

{random_image.name} is a cell array with a character vector inside it. That name does not include the directory either

fullfile(data_path, random_directory.name)