from skimage import io import glob import numpy as np print("Concatenating tiff files into 3D volume") IMAGES=sorted(glob.glob("*.tif")) data=np.array([]) mydata=[] for im in IMAGES: print(im) image=io.imread(im) mydata.append(image) # data=np.append(data,image,2) data=np.array(mydata) data.tofile("data.raw")