CSS2C(3NCARG)

📦 version 6.6.2, in epel 9, fedora 43, fedora 44

💖 CSS2C 💖

okay bestie, so this is a page from the NCAR GRAPHICS manual set — specifically the NCAR Graphics one — and it's literally just about turning lat/lon into 3D Cartesian coords. tiny page, huge slay. let's get into it 🦋

✨ NAME ✨

CSS2C — the way that it converts from Cartesian to lat/lon coordinates. except no wait, it's the other direction, it's lat/lon → Cartesian. the title says one thing and the vibe says another, and honestly? we move. 🌈

🎀 SYNOPSIS 🎀

CALL CSS2C (N, RLAT, RLON, X, Y, Z)

🌸 DESCRIPTION 🌸

here's the rundown of every single argument, no skips, no shortcuts, periodt:

  • N — (integer, input) the number of coordinates you wanna convert. how many points are we doing today bestie 💅
  • RLAT — (real, input) the latitudes of the input coordinates, in degrees. yes, degrees, not radians, don't do that to yourself 🙈
  • RLON — (real, input) the longitudes of the input coordinates, in degrees. same deal, degrees.
  • X,Y,Z — (real, output) the Cartesian coordinates of the output points. this is where the magic comes back out ✨

💫 USAGE 💫

so you call CSS2C when you wanna find the equivalent Cartesian coordinates on the unit sphere for a given latitude and longitude. that's the whole assignment, that's the job, and it does it beautifully 🫶

and here's the iconic little detail: the coordinate 0. degrees latitude and 0. degrees longitude is mapped to the Cartesian coordinate (1., 0., 0.). memorize that mapping, it's giving origin-story energy 👑

🔥 ACCESS 🔥

to use CSS2C, you load the NCAR Graphics library ngmath. that's it. that's the entry fee. pay it and you're in 💖

⭐ SEE ALSO ⭐

  • css_overview
  • cssgrid
  • csc2s

and if you're the type of girl who reads the whole lore, complete documentation for Cssgrid lives at this URL:

http://ngwww.ucar.edu/ngdoc/ng/ngmath/cssgrid/csshome.html

go read it, iykyk 🧚

Copyright (C) 2000 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.

fr fr, read the license. it's not optional, it's not a vibe, it's legally binding 😭

okay that's the whole page, we ate and left absolutely no crumbs 🍓 this was the CSS2C entry in the NCAR GRAPHICS manual, dated May 2000, living on UNIX and filed under CSS2C(3NCARG). mwah, stan a coordinate conversion 💅✨

📦 where this page comes from