change - to = in vec_SA
change - to = in vec_SA

ljwolf/pysal_core,hasecbinusr/pysal,ljwolf/pysal,pedrovma/pysal,ljwolf/pysal,pastephens/pysal,TaylorOshan/pysal,sjsrey/pysal_core,lixun910/pysal,lixun910/pysal,lixun910/pysal,pastephens/pysal,lanselin/pysal,TaylorOshan/pysal,TaylorOshan/pysal,sjsrey/pysal,pastephens/pysal,sjsrey/pysal_core,ljwolf/pysal,hasecbinusr/pysal,weikang9009/pysal,sjsrey/pysal_core,ljwolf/pysal_core,hasecbinusr/pysal,ljwolf/pysal_core,pysal/pysal