Yes, I suppose one could use aa for astrology. I used it to generate data for a scientific analysis of the effect of moon positions on rainfall. The most significant factor was not the phases of the moon, as some people argue, but the declination of the moon… ie its position in relation to the equator.
The moon’s gravity tends to drag weather systems like cyclones across the equator as it moves from 28 deg north to 28 deg south .
It is a nice simple C program , in the old style.
There are many such programs hanging around in the scientific world… a lot of them never make it into repositories or github.
1 Like
I meant astronomy. Although there are a few astrology programs that can be used for astronomy and give rise and set times for sun and moon, etc.
1 Like
Thank you for that detail.
I can add that R , at the moment, only has an X11 driver for its screen graphics, but it also has printable graphics to file ( like png or ps)
That interests me. There must, in the past, have been xservers that did not require systemd.
Does Wayland have dependency on systemd? I think maybe not… Chimera uses Wayland with the dinit init system.
Aside
I discovered that Wayland is named after a town near Redmond… apparently Redhat uses names of nearby towns for its development packages. Another example is dracut.
1 Like
Those are some of my favorite types of programs. Speaking of programs that don’t make it into repositories, when you mentioned Xv earlier and I thought of picaxo. It’s a really lightweight, very basic image viewer. It was written for SDL. I like to use it especially when I want a quick view of a graphics file. perigee ( Perigee Slideshow ) is nice too. It’s a very simple slideshow graphics viewer. I wrote a FLTK front end for it at one point since it’s command line based and only has a GUI for Win32.
2 Likes
I saw a thing called FLUID… it seems to be a gui for making things with FLTK. You probably know it.
Me too.
Most of the scientific ones are Fortran.
There used to be an index of them, I think on gopher or maybe netlib. I will see if I can find it.
Scientific problems make good programming fodder as they are usually well defined and of finite extent.
FLTK recently gained wayland support.
1 Like
I know they’ve been working on it for a long while now. Just not sure how stable it is yet. Haven’t you tried any FLTK applications with a Wayland backend and if so, what were your impressions?
1 Like
This is not list I remember
1 Like
An advantage of C is that it almost never changes. Nice find @nevj
2 Likes
Yes, you can compile a C program almost anywhere. That is why Unix and Linux are portable OS’s, because they are written in a portable language. That was originally a big advance… previous OS’s were machine specific.
Fortran has a new standard about every 10 years, but it keeps backward compatability… I can compile old fortran on a modern compiler.
1 Like