draws images at given 2d coordinates like T-SNE of MNIST

imscatter.py

def imscatter(images, positions):
    
    positions = np.array(positions)
    
    bottoms = positions[:,1] - np.array([im.shape[1]/2.0 for im in images])
    tops = bottoms + np.array([im.shape[1] for im in images])
        
    lefts = positions[:,0] - np.array([im.shape[0]/2.0 for im in images])
    rigths = lefts + np.array([im.shape[0] for im in images])
    
    most_bottom = np.floor(bottoms.min())
    most_top = np.ceil(tops.max())
    
    
    
    most_left = np.floor(lefts.min())
    most_right = np.ceil(rigths.max())
    
    print most_bottom, most_top , most_left, most_right
    
    scatter_image = np.zeros([most_right - most_left,most_top-most_bottom,3],dtype = imgs[0].dtype)
    
    # shift, now all from zero
    positions -= [most_left,most_bottom]

    for im,pos in zip(images,positions):

        xl = int(pos[0] - im.shape[0]/2)
        xr = xl + im.shape[0]
        
        yb = int(pos[1] - im.shape[1]/2)
        yt = yb + im.shape[1]
    
        
        scatter_image[xl:xr,yb:yt,:] = im
    return scatter_image