How to keep same names of images.Tiff for outputs?

Hi everybody,

I did mask to multiple images. TIFF then I want ton save the masked images in same name of the original images. Is that possible?

Thank you

Reyadh

Here is my code,

cd G:\marsh\new
F_read=dir('*.tif');
for i=1:2
I{i}= F_read(i).name;    
I{i} = imread(I{i});
ID{i}= im2double(I{i});
Ii{i}= ID{i}(697:709,2728:2735);
Ii{i}(Ii{i}>1)=NaN;
Ii{i}(Ii{i}<0)=NaN;
Ii{i}(Ii{i}==0)=NaN;
end
for i=1:13
    lt(i)=32.01-0.0833*(i-1);
end
clear i
for i=1:8
    lg(i)=47.09+0.0833*(i-1);
end
clear i
cd F:\Landsat_images\All_marshes_Calssification\Alhuwaiza\Mask_Tif
M=m_shaperead('Huwaiza'); 
%Create a mask
x = linspace(min(lg), max(lg), 8);
y = linspace(min(lt), max(lt), 13);
[x,y] = meshgrid(x,y);
for i=1:length(M.ncst)
    Ncst(i,1)=M.ncst{i}(1);
    Ncst(i,2)=M.ncst{i}(2);
end
isin = inpolygon(x,y,Ncst(:,1),Ncst(:,2));
isin=flipud(isin);
isin=double(isin);
isin(isin==0)=NaN;
MASK=isin;
clear isin x y
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
cd G:\marsh\new\huTif_new
for i=1:length(Ii)
    set(0,'DefaultFigureRenderer','zbuffer')
    [Plg,Plt]=meshgrid(lg,lt);
    LATLIMS=[30.952 32.01];
    LONLIMS=[47.09 47.818];
    m_proj('Equidistant Cylindrical','lon',LONLIMS,'lat',LATLIMS);
    img=Ii{i}.*MASK;
     map=m_pcolor(Plg,Plt,img);
    a=colormap(Iraqimarsh);
%     a=fliplr(a);
    set(gcf,'colormap',a);
    shading flat;
    m_grid('linewi',2,'tickdir','out');
    str=num2str(i);
   saveas(map,str,'tif');
end

[Walter Roberson]

Duplicates http://www.mathworks.com/matlabcentral/answers/282398-how-can-i-save-outputs-in-same-names-of-inputs

[reyadh Albarakat]

Thank you Walter Roberson. Really you are helpful person.

Reyadh