Hex-utils: A Tool Set Supporting HexASCII Hexagonal rasters

Luís Moreira de Sousa, João Paulo Leitão

2017

Abstract

The advantages of hexagonal meshes over squared grids in discretising spatial variables have been known for long. Notwithstanding, the raster data formats used in geo-spatial disciplines to this purpose are still today almost exclusively reliant on squared grids. The HexASCII file format is a core element in an attempt to introduce hexagonal rasters to mainstream GIS, defining a simple vehicle to store and share such data structures. This article describes the hex-utils tool-kit, an Application Programming Interface (API) and a set of command line tools enabling the use of HexASCII rasters. Basic operations are supported: creation of new hexagonal rasters from different inputs and transformation into file formats readable by desktop GIS programmes. The API sets a framework for the development of further functionality.

References

  1. Burggraf DS. 2006. Geography markup language. Data Science Journal. 5:178-204.
  2. Butler H, Daly M, Doyle A, Gillies S, Schaub T, Schmidt C. 2008. The geojson format specification. URL: http://wwwgeojsonorg/geojson-spechtml/ (accessed 29-11-2016).
  3. Chaplot V, Darboux F, Bourennane H, Leguédois S, Silvera N, Phachomphon K. 2006. Accuracy of interpolation techniques for the derivation of digital elevation models in relation to landform types and data density. Geomorphology. 77(1):126-141.
  4. de Sousa LM. 2006. Ílgebra de Mapas em Grelhas Hexagonais [master's thesis]. Universidade Técnica de Lisboa.
  5. Gibson L, Lucas D. 1982. Spatial data processing using generalized balanced ternary. In: Proceedings of the IEEE Conference on Pattern Recognition and Image Processing. p. 566-571.
  6. Golay MJE. 1969. Hexagonal parallel pattern transformations. IEEE Transactions on Computers. 18(8):733- 740.
  7. Mersereau R. 1979. The processing of hexagonally sampled two-dimensional signals. In: Proceedings of the IEEE; Vol. 67. p. 930-949.
  8. Sanner MF, et al. 1999. Python: a programming language for software integration and development. J Mol Graph Model. 17(1):57-61.
  9. Shafranovich Y. 2005. Common format and mime type for comma-separated values (csv) files. URL: https://2rfcnet/4180 (accessed 13-02-2017).
  10. Team QD, et al. 2013. Qgis geographic information system. Open Source Geospatial Foundation Project http://qgis osgeo org.
  11. Warmerdam F. 2008. The geospatial data abstraction library. In: Open source approaches in spatial data handling. Springer; p. 87-104.
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Paper Citation


in Harvard Style

Moreira de Sousa L. and Leitão J. (2017). Hex-utils: A Tool Set Supporting HexASCII Hexagonal rasters . In Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM, ISBN 978-989-758-252-3, pages 177-183. DOI: 10.5220/0006275801770183


in Bibtex Style

@conference{gistam17,
author={Luís Moreira de Sousa and João Paulo Leitão},
title={Hex-utils: A Tool Set Supporting HexASCII Hexagonal rasters},
booktitle={Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,},
year={2017},
pages={177-183},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006275801770183},
isbn={978-989-758-252-3},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,
TI - Hex-utils: A Tool Set Supporting HexASCII Hexagonal rasters
SN - 978-989-758-252-3
AU - Moreira de Sousa L.
AU - Leitão J.
PY - 2017
SP - 177
EP - 183
DO - 10.5220/0006275801770183