c_ftcurv(3NCARG)

✨ c_ftcurv — 1D interpolation for non-periodic functions ✨

okay bestie, welcome to c_ftcurv from the NCAR GRAPHICS manual, section 3NCARG 💖 this is the girl who takes your scattered little data points and goes "say no more" and draws a smooth curve through them. non-periodic only, she has boundaries 💅

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🌸 FUNCTION PROTOTYPE 🌸

int c_ftcurv (int, float [], float [], int, float [], float []);

like, that's the whole aura right there 🫶

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🎀 SYNOPSIS 🎀

int c_ftcurv (n, xi, yi, m, xo, yo);

six args, one job, zero drama ✨

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💜 DESCRIPTION 💜

• n — the number of input data points you're feeding her. heads up: n > 1, she needs at least a lil something to work with, one singular point is not a curve bestie 😭
• xi — an array holding the abscissae for the input function. that's the x's, the horizontal situation 📏
• yi — an array holding the functional values of the input function — so y(k) is the functional value at x(k) for k=0,n. that's your y's, the vertical vibe check 🌈
• m — the number of interpolated values you want back. how many points do you desire, queen 👑
• xo — an array holding the abscissae for the interpolated values. the x's of the new points she's about to manifest ✨
• yo — an array holding the interpolated functional values — yo(k) is the functional value at xo(k) for k=0,n. the y's of the freshly invented points, and honestly? iconic 🌟

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🦋 RETURN VALUE 🦋

c_ftcurv hands you back an error value, as per:

• = 0 — no error. we love a clean run, no cap 💖
• = 1 — if n is less than 2. she said give me more than one point or give me nothing 🙈
• = 2 — if X values are not strictly increasing. the x's have to go up, up, up, strictly, no ties, no backtracking, no chaos ⬆️

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🔥 USAGE 🔥

so here's the order of operations, bestie: you call c_ftcurv after you've already set all the control parameter values you wanted, using the procedures c_ftseti, c_ftsetr, and c_ftsetc. set the vibes first, then interpolate. periodt 💅

the control parameters that apply to c_ftcurv are: sig, sl1, sln, sf1. those four, that's the squad 👑

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🌈 ACCESS 🌈

to use c_ftcurv, you gotta load the NCAR Graphics library ngmath. that's the ticket in, no workaround 🎟️

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👑 SEE ALSO 👑

• fitgrid_params
• c_ftseti
• c_ftsetr
• c_ftsetc

also, full documentation for Fitgrid is living at this URL, go read her:

http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html

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💖 COPYRIGHT 💖

Copyright (C) 2000 University Corporation for Atmospheric Research

The use of this Software is governed by a License Agreement.

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and that's the whole page, no crumbs left, fr fr 🌸

okay so this was the UNIX flavor of the c_ftcurv(3NCARG) page, dated March 1998, and it's genuinely giving retro-baddie energy. ty for reading my little unix rant, mwah 🎀✨💜