Variable file name in print function using object handle

I am trying to save a file using its handle. The name of the file is variable. How do I do it using the print function?

My attempt:

for i = 1:100
    var = int2str(i);
    z = strcat(var,'.bmp');
    I = imread(z);
    imhist(I);
    h = gcf;
    print(h, '-dbitmap' , 'D:\Figures\z');
end

 I get a file named z.bmp instead of the string. How do I change the code to save the file as a string contained in z?

Answer 1

[dpb]

The problem is you wrote the whole name as a literal string instead of using the variable--

    print(h, '-dbitmap' , fullfile('D:\Figures',z));

NB: that as you have it written, your filenames will be just '1.bmp', '2.bmp', etc., ... That may be ok and what you intend but you might consider a little more sophistication in naming as sotoo

print(h, '-dbitmap' , fullfile('D:\Figures',sprintf('Fig%02d',i)));

This will produce 'Fig01', 'Fig02', etc., ... which will sort alphabetically numerically as well when get to double-digits and will also identify figure files as figures besides the extension (which Matlab automagically supplies according to the type specified so don't need to create it explicitly). Just a suggestion...