When stats=graycoprops(I) is applied on Image, it returns four values such as Energy, Homogeneity, correlation, Entropy . how to copy or store these values into a vector, but this stats is a structure, even if I try to assign it to a new variable, it becomes a structure variable. please tell me how to store these values into a vector, because i need to store these values for each image and want to make it as a dataset.