Saving a stack of images

Hi. I have a set of tiff images in an array (expressed as an array of double).

I want to save as a stack of images. I have tried:

for k=1:mx        
    imgArray2(:,:,k)=imgArray{k};       
end 
try   
 imwrite(imgArray2,sprintf('%s\\%s.stk',folder,prefix));   
catch
  h = errordlg('Error Saving Image STK')  
end

But get the error message:

Subscripted assignment dimension mismatch.

Error in myProgram>pushbutton53_Callback (line 4016)
    imgArray2(:,:,k)=imgArray{k};

[Adam]

What size are the elements of imgArray? I assume they are all the same size? If so I would wonder how they come to be in a cell array in the first place! Also is imgArray2 presized?

[Jason]

Yes they are all the same size. No its not presized. Is this an issue?

[Image Analyst]

When you say " I have a set of tiff images in an array (expressed as an array of double)." what is the "array"? Is it "imgArray", which is an array of cells, containing who-knows-what, or is it "imgArray2". If it's imgArray2, what is the class of that? uint8 or double?

Next, what is the value of mx and prefix?

These are the formats that imwrite() can write:

>> imformats

EXT       ISA     INFO        READ      WRITE     ALPHA  DESCRIPTION                     
-----------------------------------------------------------------------------------------
bmp       isbmp   imbmpinfo   readbmp   writebmp  0      Windows Bitmap
cur       iscur   imcurinfo   readcur             1      Windows Cursor resources
fts fits  isfits  imfitsinfo  readfits            0      Flexible Image Transport System
gif       isgif   imgifinfo   readgif   writegif  0      Graphics Interchange Format
hdf       ishdf   imhdfinfo   readhdf   writehdf  0      Hierarchical Data Format
ico       isico   imicoinfo   readico             1      Windows Icon resources
j2c j2k   isjp2   imjp2info   readjp2   writej2c  0      JPEG 2000 (raw codestream)
jp2       isjp2   imjp2info   readjp2   writejp2  0      JPEG 2000 (Part 1)
jpf jpx   isjp2   imjp2info   readjp2             0      JPEG 2000 (Part 2)
jpg jpeg  isjpg   imjpginfo   readjpg   writejpg  0      Joint Photographic Experts Group
pbm       ispbm   impnminfo   readpnm   writepnm  0      Portable Bitmap
pcx       ispcx   impcxinfo   readpcx   writepcx  0      Windows Paintbrush
pgm       ispgm   impnminfo   readpnm   writepnm  0      Portable Graymap
png       ispng   impnginfo   readpng   writepng  1      Portable Network Graphics
pnm       ispnm   impnminfo   readpnm   writepnm  0      Portable Any Map
ppm       isppm   impnminfo   readpnm   writepnm  0      Portable Pixmap
ras       isras   imrasinfo   readras   writeras  1      Sun Raster
tif tiff  istif   imtifinfo   readtif   writetif  0      Tagged Image File Format
xwd       isxwd   imxwdinfo   readxwd   writexwd  0      X Window Dump

Where in there do you see the "stk" format? Because I'm not seeing it.

[Walter Roberson]

.stk appears to be Metamorph .stk files, which appear to be an extension of TIFF files. The contribution https://www.mathworks.com/matlabcentral/fileexchange/10298-tiffread2-m should be able to read .stk files. At the moment I do not know about writing .stk files.

[Jason]

Yes stk is from Metamorph. I dont need this format, just some way to collect a set of tiff images (which are doubles) and be able to save as a single file in any format. I would then later need to undo this and be able to eventually read the individual images.

Answer 1

[Image Analyst]

Try save():

save('tiff_stack.mat', 'imgArray2');

[Jason]

Great, thanks