Thread Subject: problem with 'imread'

Dear all,


I saved a 128*128 uint8 (logical) image array to a file. But I could
not read in the file:


%% the code block
imwrite(temp, 'imarray.tif');
[X,map] = imread('imarray.tif');
imfinfo(X)
% code end


The error message is


Error using ==> fopen
Function 'fopen' not defined for variables of class 'uint8'.


Would you pls help me solve this problem?


Thanks!

"c. stein" <c.onestone@mailcity.com> wrote in message
news:eec3120.-1@WebX.raydaftYaTP...
> Dear all,
>
>
> I saved a 128*128 uint8 (logical) image array to a file. But I could
> not read in the file:
>
>
> %% the code block
> imwrite(temp, 'imarray.tif');
> [X,map] = imread('imarray.tif');
> imfinfo(X)
> % code end

What is "temp"? I guess that it is a numeric array. Try this...

temp = tempname
 imwrite(temp, 'imarray.tif');
 [X,map] = imread('imarray.tif');
 imfinfo(X)

HTH,

Rob Henson
The MathWorks, Inc.

>
>
> The error message is
>
>
> Error using ==> fopen
> Function 'fopen' not defined for variables of class 'uint8'.
>
>
> Would you pls help me solve this problem?
>
>
> Thanks!

I don't think the problem is with reading the file, but with the next
line (imfinfo). That function expects a filename, while the the
output of imread (the map itself) is given.


Stijn
(I'm curious what Rob wanted to get with the "temp=tempname"??)

"Stijn Helsen" <SHelsen@compuserve.com> wrote in message
news:eec3120.1@WebX.raydaftYaTP...
> I don't think the problem is with reading the file, but with the next
> line (imfinfo). That function expects a filename, while the the
> output of imread (the map itself) is given.
>
>
> Stijn
> (I'm curious what Rob wanted to get with the "temp=tempname"??)

I was answering the wrong question.