chx_generic_functions.py 文件源码

def create_time_slice( N, slice_num, slice_width, edges=None ):
    '''create a ROI time regions '''
    if edges is not None:
        time_edge = edges
    else:
        if slice_num==1:
            time_edge =  [ [0,N] ]
        else:
            tstep = N // slice_num
            te = np.arange( 0, slice_num +1   ) * tstep
            tc = np.int_( (te[:-1] + te[1:])/2 )[1:-1]
            if slice_width%2:
                sw = slice_width//2 +1
                time_edge =   [ [0,slice_width],  ] + [  [s-sw+1,s+sw] for s in tc  ] +  [ [N-slice_width,N]]
            else:
                sw= slice_width//2
                time_edge =   [ [0,slice_width],  ] + [  [s-sw,s+sw] for s in tc  ] +  [ [N-slice_width,N]]



    return np.array(time_edge)