geospatial-visualization

A collection of PKGBUILDs for Arch Linux not included in the AUR or modified from the AUR versions.

GMT (Generic Mapping Tools) shell scripts building 3D perspective relief models of the Kuril-Kamchatka Trench: grdview topographic/bathymetric meshes from ETOPO relief overlaid on 2D EGM96 geoid contours, rendered at two perspective azimuths (135 and 165 degrees).

GMT (Generic Mapping Tools) shell scripts mapping ten TerraClimate climate variables over Mongolia for 2019 (min/max temperature, precipitation, soil moisture, wind, solar radiation, SWE, vapour pressure, VPD, PDSI drought index) from NetCDF grids with DCW country clipping. Figures for Lemenkova, Geosciences 2022, 12(3):140.

GMT (Generic Mapping Tools) shell scripts extracting and stacking serial cross-track bathymetric profiles across the Kuril-Kamchatka Trench (north and south segments) with grdtrack, plotting median stacked profiles with error envelopes over a shaded-relief basemap.

GMT (Generic Mapping Tools) shell scripts drawing a world geological-features map: hotspots, mid-ocean ridges, transform faults, subduction trenches, ophiolites, volcanoes and Large Igneous Provinces on an Eckert equal-area projection centred on the Pacific, with a legend.

GMT (Generic Mapping Tools) shell scripts computing the 2D-FFT spectral coherence between marine gravity and bathymetry grids (isostasy / flexural response) with grdfft, plus multi-panel maps of bathymetry, geoid, free-air gravity and vertical gravity gradient.

Over 30 GMT (Generic Mapping Tools) shell scripts building 3D perspective relief models: grdview-rendered topographic and bathymetric meshes and surfaces from ETOPO/GEBCO grids at set azimuth and elevation, often overlaid on 2D geoid contours, for ocean trenches, seas and countries.

GMT (Generic Mapping Tools) shell scripts rendering 3D bar histograms of bathymetric depth values: relief grids converted to XYZ (grd2xyz) and drawn as perspective 3D columns with psxyz to show the spatial depth distribution of ocean trenches.

GMT (Generic Mapping Tools) shell script building a faceted side-by-side comparison figure: two map panels contrasting gridding algorithms (xyz2grd direct conversion vs nearneighbor interpolation) of the same Kuril-Kamchatka Trench bathymetry, with shared captions and title.

GMT (Generic Mapping Tools) reference scripts cataloguing the psxy plotting symbols: vectors, circles, diamonds, ellipses, bars, stars, triangles, squares, pie wedges, crosses, letters, hexagons, pentagons, math-angle arcs and rotated rectangles, each demonstrated with its arguments.

GMT shell scripts mapping eleven TerraClimate climate variables over Botswana (temperature, precipitation, soil moisture, PET/AET, radiation, vapour pressure, VPD, wind, PDSI) from NetCDF grids, plus a topographic base map. Figures for Lemenkova, ISPRS Int. J. Geo-Inf. 2022, 11(9):473.

Over 80 GMT (Generic Mapping Tools) shell scripts mapping TerraClimate climate variables per country (temperature extremes, precipitation, PDSI drought index, soil moisture, PET/AET, runoff, shortwave radiation, snow-water equivalent, vapour pressure/deficit, wind) from NetCDF grids, with DCW country clipping, contours and cartographic layout.

GMT (Generic Mapping Tools) shell script building a land/water mask grid from GSHHG shorelines with grdlandmask (land = 1, ocean = NaN) and rendering it over an ETOPO1 relief basemap for the Kuril-Kamchatka Trench area.

Over 35 GMT (Generic Mapping Tools) shell scripts producing regional geological and tectonic setting maps: relief basemaps overlaid with trenches, ridges, transform and fracture zones, ophiolites, volcanoes, LIPs, GSFML magnetic lineations, subducting-slab contours and plate-motion vectors, with fault/plate labels and legends.

GMT (Generic Mapping Tools) shell scripts producing bathymetric contour (isobath) maps of ocean trenches from ETOPO relief, with annotated index contours on an Albers equal-area conic projection and study-area outlines.

GMT (Generic Mapping Tools) shell scripts interpolating scattered XYZ point data (topography, gravity, sediment) to continuous grids with blockmean and the surface adjustable-tension continuous-curvature spline algorithm, then shading and mapping the modelled surfaces over ocean trenches.

GMT (Generic Mapping Tools) shell scripts mapping geoid undulation from EGM global gravity models (EGM2008, EGM96) over countries, seas and ocean trenches, with colour-shaded grids, geoid contours, conic/Eckert projections and a global geoid inset.

GMT (Generic Mapping Tools) shell scripts gridding scattered XYZ point data with the nearneighbor local nearest-neighbour / sector-search interpolation algorithm, then contouring and mapping the modelled surfaces over ocean-trench regions.

GMT (Generic Mapping Tools) shell scripts demonstrating coastline-based raster clipping (pscoast clip paths) to render one dataset over the ocean and a differently styled, gray-shaded version over masked land, for geoid and relief maps of ocean-trench regions.

GMT (Generic Mapping Tools) shell scripts drawing oblique Mercator (-JOc) coastline basemaps of the Kuril-Kamchatka and Mariana Trenches, with the projection axis aligned to each trench and graticules, scale bars and toponymy.