Output of Sift Descriptors

Hi! I would like to know what should be the output of a sift descriptor when you are extracting them and saving them to a txt file.

I know that a feature vector consist of an m x 128 matrix. I had already obtained that output but what i am currently in doubt is that are they really the descriptors that i am looking for?

The results of my feature vectors are 0 and 1's only.Are they really only o and 1's?

Attached is my sample vector output

and just a follow up, if i want to save those feature vectors to a text files. What function should i use? Thanks in advance :)

[Image Analyst]

Nothing is attached (yet).

[Albert Rey Ruelan]

Sorry. I'm kinda new to this matlab forum.I've now attached it.