i have an error in imshow

Answer 1

[Walter Roberson]

There are three possibilities:

• you might have a corrupted MATLAB installation
• you might have a file named Image.m on your path but you are using a file system that is set to case-insensitive (which is the most common setting for NTFS file systems)
• you might have your MATLAB installed on a DOS file system that is so very old that it predates case-sensitivity and only has uppercase file names

Answer 2

[DGM]

You likely have a user-created file called image.m somewhere on the path. You can try to see what is on the path by doing

which image -all

built-in (/MATLAB/toolbox/matlab/specgraph/image)

If it shows some other non-MATLAB file, either rename it or move it off the path somewhere.