At 06:52 PM 12/12/97 +0100, you wrote: >Hi All, > >After so many years I discovered an error in my program Zonwvlak.exe. >Of couse there have been more minor errors, such as typing errors, but >this one is a little more serious. >But don't panic, as far as I know no one has noticed this error at all. > >It happens with the calculation of lines for the sun's azimuth and >altitude and only if the latitude is more then 66.56 or less then -66.56 >degrees. >I don't think many people will have calculated such lines for sundials >at these latitudes. >And not the whole line is wrong; only one of the points is wrong, namely >if the sun's azimuth is + or - 180 degrees. >And the error is only visible if the calculated point is a real point, >that means the sun must be above the horizon and the sun must shine on >the dial's face. > >This error is removed and I placed a new version for download in the >package Zonwvlak.zip. > > >In the mean time, with the help of Mac Oglesby, I discoverd that the >windows interface for my programs also runs with windows 3.1. >If you have windows 3.1 but not windows 95 you still can use this >interface. >Mac Oglesby uses windows 3.1 with his Macintosh computer. > > >Happy dialling, > >Fer de Vries. > > Not many dialists at those latitudes!
An unrelated question on Zonwvlak (this may be elementary computing and I apologise for the lack of appropriate literacy): When I calculate the hour lines, the screen can only cope with about 4 of them. I need to scroll back to see all of them and for some reason I have been unable to do so. Any advice? Thanks. Mike Koblic, Quesnel BC
