DSPNT2S(3NCARG)

💖 DSPNT2S — the NCAR Graphics girlies' guide to interpolating at one (or a few) points in 2D, single precision edition ✨

okay so bestie. you've got a pile of scattered data points and you wanna know what the vibe is at one specific spot. that's literally this. it's DSPNT2S, it lives in the 3NCARG manual, it's a Fortran-callable NCAR Graphics subroutine, and it does single-precision 2D interpolation at individual points. no cap. 🎀

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✨ SYNOPSIS ✨

CALL DSPNT2S (N, X, Y, Z, M, XO, YO, ZO, IER)

that's the whole summoning ritual. nine arguments. she's not complicated, she's just precise. 💅

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🌸 DESCRIPTION 🌸

okay so here's the tea on every single argument, and yes we're doing all of them, because none of them are skippable:

• N — (Integer, Input) — the number of input data points. how many lil data babies you're feeding in. 🔥
• X — (Real, Input) — an array holding the X coordinates of your input data points. all the x's, lined up.
• Y — (Real, Input) — an array holding the Y coordinates of your input data points. all the y's, likewise.
• Z — (Real, Input) — an array of the functional values of your input data points. like, Z(L) is the value of the input function at coordinate (X(L),Y(L)), for L=1,N. so point number L has its value sitting right there in Z(L). it's giving organized. 👑
• M — (Integer, Input) — the number of output data points. and yes bestie, this may be "1". one singular point is a completely valid lifestyle choice. 🦋
• XO — (Real, Input) — an array of dimension M with the X coordinates of the output data. and here's the cute part: the values in XO may be in any order. she does not care. she is unbothered. ✨
• YO — (Real, Input) — an array of dimension M with the Y coordinates of the output data. same deal: the values in YO may be in any order. chaos accepted, queen. 🌈
• ZO — (Real, Output) — an array of dimension M holding the interpolated values. so ZO(I) is the interpolated value at point (XO(I),YO(I)) for I=1,M. this is the whole reason we're here. this is the main character. 💖
• IER — (Integer, Output) — the error return value, aka the vibe check. if IER comes back as 0, then no errors were detected, we ate, everything's slay. if IER is non-zero, then go refer to the man page for dsgrid_errors for the details. 🫶

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💫 USAGE 💫

you call this subroutine when you want to interpolate at an individual point or points. that's it, that's the moment. one point, several points, she's ready. 💜

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🎀 ACCESS 🎀

to use DSPNT2S, load the NCAR Graphics library ngmath. that's the one. don't forget it or you'll be sitting there like 😭 wondering why nothing links.

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🦋 SEE ALSO 🦋

• dsgrid
• dsgrid_params

also, complete documentation for Dsgrid is available at URL:

http://ngwww.ucar.edu/ngdoc/ng/ngmath/dsgrid/dshome.html

go read it, it's iconic. 📚

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👑 COPYRIGHT 👑

Copyright (C) 2000 University Corporation for Atmospheric Research

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

like, for real, it's legally binding. not me being dramatic, that's literally what it says. ⚠️

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okay bestie that's the whole page, every flag and every fact intact, no crumbs left. this one's from the UNIX manual, dated September 1997-1998, sourced from DSPNT2S(3NCARG) in NCAR GRAPHICS — and yes she's been serving since the 90s and she still eats. 💅✨ bye love u, go interpolate responsibly 🫶💖