Results 31 to 40 of about 28,807 (292)

Worldwide Hexagonal Grid 7774km2

open access: yes, 2023
<p>We made a worldwide  hexagonal grid composed of 20,805 hexagonal  7774 km2 units, built using Discrete Global for R (<a href="https://github.com/r-barnes/dggridR">https://github.com/r-barnes/dggridR</a>).</p ...
Olivero, Jesús   +3 more
core   +1 more source

A global multimoment constrained finite-volume scheme for advection transport on the hexagonal geodesic grid [PDF]

open access: yes, 2012
A third-order numerical model is developed for global advection transport computation. The multimoment constrained finite-volume scheme has been implemented to the hexagonal geodesic grid for spherical geometry.
Xiao F(肖锋)   +4 more
core   +1 more source

Comparison of square and hexagonal grid efficiency.

open access: yes, 2021
Comparison of square and hexagonal grid efficiency.
William J. Pestle (7975067)   +2 more
core   +1 more source

Comparison of square and hexagonal grid effectiveness.

open access: yes, 2021
Comparison of square and hexagonal grid effectiveness.
William J. Pestle (7975067)   +2 more
core   +1 more source

Duality and Dimensionality Reduction Discrete Line Generation Algorithm for a Triangular Grid

open access: yesISPRS International Journal of Geo-Information, 2018
Vectors are a key type of geospatial data, and their discretization, which involves solving the problem of generating a discrete line, is particularly important. In this study, we propose a method for constructing a discrete line mathematical model for a
Lingyu Du   +4 more
doaj   +1 more source

Blue-noise halftoning for hexagonal grids [PDF]

open access: yesIEEE Transactions on Image Processing, 2006
In this paper, we closely scrutinize the spatial and spectral properties of aperiodic halftoning schemes on rectangular and hexagonal sampling grids. Traditionally, hexagonal sampling grids have been shunned due to their inability to preserve the high-frequency components of blue-noise dither patterns at gray-levels near one-half, but as will be shown,
Daniel L. Lau, Robert Ulichney
openaire   +2 more sources

Geovisualization of Hydrological Flow in Hexagonal Grid Systems

open access: yes, 2022
Recent research has extended conventional hydrological algorithms into a hexagonal grid and noted that hydrological modeling on a hexagonal mesh grid outperformed that on a rectangular grid.
Heather McGrath   +2 more
core   +1 more source

Watershed delineation on a hexagonal mesh grid

open access: yesEnvironmental Modelling & Software, 2020
Abstract Spatial discretization is the cornerstone of all spatially-distributed numerical simulations including watershed hydrology. Traditional square grid spatial discretization has several limitations including inability to represent adjacency uniformly.
Chang Liao   +3 more
openaire   +2 more sources

Hexagonal vs. Rectilinear Grids for Explicit Finite Difference Schemes for the Two-dimensional Wave Equation

open access: yes, 2013
Finite difference schemes for the 2-D wave equation operating on hexagonal grids and the accompanyingnumerical dispersion properties have received little attention in comparison to schemes operating on rectilinear grids.
Stefan Bilbao   +3 more
core   +1 more source

Enhancing Trajectory-Based Operations for UAVs through Hexagonal Grid Indexing: A Step towards 4D Integration of UTM and ATM

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2023
Aviation is expected to face a surge in the number of manned aircraft and drones in the coming years, making it necessary to integrate Unmanned Aircraft System Traffic Management (UTM) into Air Traffic Management (ATM) to ensure safe and efficient ...
DEEPUDEV SAHADEVAN NEELAKANDAN   +1 more
doaj   +1 more source

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