Hi Waldek, Many thanks for such a rapid response. I will look into this. Best regards Dave
Sent from my iPhone > On 2 Jul 2021, at 16:58, [email protected] wrote: > > On Fri, Jul 02, 2021 at 04:38:49PM +0100, [email protected] > wrote: >> All, >> >> While working through the teach file "vision4" and playing >> with Hough transforms I have noticed that the call "rc_context" is not >> defined i.e. "undef". >> >> A typical call to save the window context and coord. System should be >> "rc_context(false) -> xy_context" say, according to the teach file. >> >> Does anyone know of this? Has the function been replicated? And if so, >> replaced by what? > > Can not comment specifically on 'rc_context'. But there is general > issue: a lot functions have to be loaded before use. In particular > 'rclib' and 'rcmenu' need to be loaded before use. Older Birmingham > setup loaded parts of them into startup image, but this is undsirable > for various reasons and not done in V16. This is list of things > that were loaded into startup image, but currently are not: > > rc_graphic > $packages/teaching/teaching.p \ > $packages/bhamlib/bhamlib.p \ > $packages/vedutils/vedutils.p \ > $packages/rclib/rclib.p \ > $packages/vedutils/lib/vedscreendown.p \ > $packages/bhamlib/auto/vedsetwindow.p \ > $packages/rclib/auto/rc_control_panel.p \ > $packages/rcmenu/rcmenu.p \ > $packages/vedmail/vedmail.p > > > IMO, no package should assume that some other package is loaded > uless it contains 'uses' (or equivalent). So probably popvision > files should be fixed by adding apropriate 'uses' (I have some > fixes of this sort in my priviate popvision tree, but it is > probaly far from complete). > > -- > Waldek Hebisch >
