On Mon, Jun 29, 2015 at 6:28 PM, kcrisman <kcris...@gmail.com> wrote: >> his=cv2.clacHist([img],[0],None,[256],[0,256]) >> >> then I am receiving the following error: >> >> --------------------------------------------------------------------------- >> SystemError Traceback (most recent call >> last) >> <ipython-input-12-732fd14676fa> in <module>() >> ----> 1 hist = >> cv2.calcHist(gray,[Integer(0)],None,[Integer(256)],[Integer(0),Integer(256)]) >> >> SystemError: error return without exception set >> > > The error is very vague, but a first guess is that cv2 can't handle Sage > Integers. So using int(256) and int(0) might help. > > More generally, if you are not going to be using a lot of Sage-specific > functionality but mostly Python packages, you may want to try using > > sage -ipython
I tried it with sage -ipython and as a result it shows vertical line. It does not show histogram :(. -- Avi kaur Blog: https://avikashyap620.wordpress.com "There is no lacking of opportunity, The thing is you do not want to see It" > > -- > You received this message because you are subscribed to a topic in the > Google Groups "sage-support" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sage-support/s7fM---nxmc/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.