EXP_VARIOGRAM(1)

📦
version 2025.10 · 3 versions
, in debian trixie, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 exp_variogram — the cornerpoint variogram bestie 💖

okay so bestie, welcome to exp_variogram, section 1 of the User Commands manual, and no cap this lil program is a whole vibe. it computes variogram data for a cornerpoint grid that's got properties, and honestly? iconic. ✨

🌸 NAME 🌸

exp_variogram — compute variogram for a cornerpoint grid with properties.

🎀 SYNOPSIS 🎀

exp_variogram gridfilename=cornerpointgrid.grdecl [option=value]

🦋 DESCRIPTION 🦋

so here's the tea ☕: this program computes data for an experimental variogram, and it does it from a cornerpoint geometry that has properties attached. the way it works is literally the cutest thing — it picks pairs of volumes randomly, then compares their distance against the difference in their properties (poro or perm, iykyk). 🫶

and the direction it uses for pairing? that comes straight from the command line, so you're the main character deciding which way the vibes flow. 💅

✨ OPTIONS ✨

  • ilen — the length in the i-direction of the subsample, counted in number of cells. defaults to all cells in the i-direction. no cap, the whole thing.
  • jlen — the length in the j-direction of the subsample, counted in number of cells. defaults to all cells in the j-direction.
  • zlen — the length in the z-direction of the subsample, given in the grid's length unit (typically cm or m, periodt). defaults to the full height.
  • imin — can be used to limit the search area for random subsamples. defaults to the minimum i in inputgrid (aka the full model).
  • imax — can be used to limit the search area for random subsamples. defaults to the maximum i in inputgrid (full model, again).
  • jmin — analog to imin, but in the j-direction. defaults to the minimum j in inputgrid (full model).
  • jmax — analog to imax, but in the j-direction. defaults to the maximum j in inputgrid (full model).
  • zmin — analog to imin, but in the z-direction and specified in the grid's length unit. defaults to the minimum in inputgrid.
  • zmax — analog to imax, but in the z-direction and specified in the grid's length unit. defaults to the maximum in inputgrid.
  • pairs — number of pairs. defaults to 100. go off, king. 👑

🙈 REPORTING BUGS 🙈

found a bug? don't be shy, report it on the github repository: <https://github.com/OPM/opm-upscaling/issues> — they're not gonna be mean about it, fr fr. 🐛

💜 a lil sign-off 💜

that's the whole page bestie!! this was exp_variogram, version 2023.10, dated October 2023, living its best life in the EXP_VARIOGRAM(1) section. now go compute some variograms and slay. 🌈👑💖

📦 where this page comes from