Problem using move file

Hi, I am new to MATLAB and trying to rename all the images inside a particular folder.I want to add a string hole with the names of my file.

if true
  % code
end
path = 'U:\Thesis\COMSOL part\Various designs\With hole-Copy\';
dirData = dir(strcat(path,'*.png'));           %# Get the selected file data
fileNames = {dirData.name};               %# Create a cell array of file names
for iFile = 1:numel(fileNames)                   %# Loop over the file names
newName = strcat('hole',fileNames,sprintf('%s',iFile)); %# Make the new name
movefile(fileNames{iFile},newName);                    %# Rename the file
end

But i get this error message "Error using movefile. Argument must contain a string."

Please help

Answer 1

[Joseph Cheng]

what you're missing is

path = 'C:\temps (IT do not delete)\matlabAnswers\dirtest\';
dirData = dir(strcat(path,'*.wav'));                          %# Get the selected file data
fileNames = {dirData.name};                                   %# Create a cell array of file names
for iFile = 1:numel(fileNames)                                %# Loop over the file names
newName = strcat('hole',fileNames(iFile),sprintf('%d',iFile));     %# Make the new name
movefile(fileNames{iFile},cell2mat(newName));                         %# Rename the file
end

i used wav files as i had a directory full of junk wav files. just change to png.. so the initial problems are:

1. in the move file the newName was a cell. that is why it asked for a string.
2. in the sprintf you were printing the number as a string. so it made it an empty space after the new name.

I'm not exactly sure if you want to put the numbering after the .wav#. perhaps you wanted holeFilename#.wav

then you substitute the for loop with something like this

for iFile = 1:numel(fileNames)                                %# Loop over the file names
newName = strcat('hole',fileNames{iFile}(1:end-4),sprintf('%d',iFile),'.wav');     %# Make the new name
movefile(fileNames{iFile},newName);                         %# Rename the file
end

[Annika]

Thank you so much.