I am trying to understand the behaviour of the option exclude in plot() when a range of values is included.
It looks to me that if a simple range like "exclude=[pi..2*pi]" is used and the function is defined and real-valued in that range then the end points and integer points between are excluded from the plot, whilst if the function is not real-valued in the range, e.g. "sin(x)^cos(x)", then the whole range is excluded. However, if several ranges are specified then when the function is real-valued the behaviour is like that for a single range, whilst if the function is not real-valued then the graph *is* plotted, incorrectly, for ranges after the first. For example the graph of "plot(sin(x)^cos(x),(x,0,4*pi),exclude=[pi..2*pi,3*pi..4*pi])" contains a straight line between 3*pi and 4*pi. Surely this cannot be the intended behaviour? I am using Sage 4.8, under Ubuntu 11.10 in a VirtualBox. Prof. A.W. Wickstead Pure Mathematics Research Centre Queen's University Belfast University Road Belfast BT7 1NN Northern Ireland Phone: 028 90976004 Fax: 028 90976060 -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
