Robert Gilmore Pontius Jr, PhD

Associate Professor

Clark University

School of Geography

Advisor to Human Environment Regional Observatory (HERO)

Advisor to Master of Arts in Geographic Information Sciences for Development and Environment (GISDE)

950 Main Street

Worcester MA 01610-1477

USA

OFFICE PHONE (508) 793-7761

OFFICE FAX (508) 793-8881

EMAIL rpontius@clarku.edu

 

Updated 19 October 2008.

 

Welcome to Gil Pontius’ home page from which you can obtain copies of the publications below. If you would like other publications, please see Gil’s CV, and then send your request and postal address to Gil (rpontius@clarku.edu).

PUBLICATIONS AS JOURNAL ARTICLES:

  1. R G Pontius Jr, W Boersma, J-C Castella, K Clarke, T de Nijs, C Dietzel, Z Duan, E Fotsing, N Goldstein, K Kok, E Koomen, C D Lippitt, W McConnell, A Mohd Sood, B Pijanowski, S Pithadia, S Sweeney, T N Trung, A T Veldkamp, and P H Verburg. 2008. Comparing input, output, and validation maps for several models of land change. Annals of Regional Science, 42(1): 11-47. Left click to request a copy. For color figures, see Pontius et al. (2007) listed under the conference proceedings on this web page. The original publication is available at www.springerlink.com.
  2. R G Pontius Jr, O Thontteh and H Chen. 2008. Components of information for multiple resolution comparison between maps that share a real variable. Environmental and Ecological Statistics, 15(2): 111-142. Left click to request a copy. The original publication is available at www.springerlink.com.
  3. C Alo and R G Pontius Jr. 2008. Identifying systematic land cover transitions using remote sensing and GIS: The fate of forests inside and outside protected areas of Southwestern Ghana. Environment and Planning B, 35(2): 280-295. Left click to request a copy.
  4. K Kuzera and R G Pontius Jr. 2008. Importance of matrix construction for multiple-resolution categorical map comparison. GIS and Remote Sensing, 45(3): 249-274. Left click to request a copy.
  5. R G Pontius Jr, R Walker, R Yao-Kumah, E Arima, S Aldrich, M Caldas and D Vergara. 2007. Accuracy assessment for a simulation model of Amazonian deforestation. Annals of Association of American Geographers, 97(4): 677-695. Left click to request a copy. The same document is available at www.blackwell-synergy.com.
  6. R G Pontius Jr, A J Versluis and N R Malizia. 2006. Visualizing certainty of extrapolations from models of land change. Landscape Ecology 21(7) p.1151-1166. Right click to download.
  7. R G Pontius Jr and C D Lippitt. 2006. Can error explain map differences over time? Cartography and Geographic Information Science 33(2) p.159-171. Right click to download.
  8. R G Pontius Jr and M L Cheuk. 2006. A generalized cross-tabulation matrix to compare soft-classified maps at multiple resolutions. International Journal of Geographical Information Science 20(1) p.1-30. Right click to download.
  9. R G Pontius Jr and J Malanson. 2005. Comparison of the structure and accuracy of two land change models. International Journal of Geographical Information Science 19(2) p.243-265. Left click to request a copy.
  10. R G Pontius Jr and J Spencer. 2005. Uncertainty in extrapolations of predictive land change models. Environment and Planning B 32 p.211-230. Right click to download. This paper won the Michael Breheny Prize for the Best Paper in Environment and Planning B in 2005.
  11. E Fedorko, R G Pontius Jr, S Aldrich, L Claessens, C Hopkinson Jr, and W Wolheim. 2005. Spatial distribution of land type in regression models of pollutant loading. Journal of Spatial Hydrology 5(2) p.60-80. Right click to download.
  12. R G Pontius Jr, D Huffaker and K Denman. 2004. Useful techniques of validation for spatially explicit land-change models. Ecological Modelling 179(4) p.445-461. Left click to request a copy.
  13. R G Pontius Jr and N R Malizia. 2004. Effect of category aggregation on map comparison. Lecture Notes in Computer Science 3234 p.251-268 in M J Egenhofer, C Freska, and H J Miller (eds): GIScience2004. Right click to download.
  14. R G Pontius Jr, E Shusas and M McEachern. 2004. Detecting important categorical land changes while accounting for persistence. Agriculture, Ecosystems & Environment 101(2-3) p.251-268. Right click to download.
  15. R G Pontius Jr and Pablo Pacheco. 2004. Calibration and validation of a model of forest disturbance in the Western Ghats, India 1920-1990. GeoJournal 61(4) p.325-334. Left click to request a copy.
  16. R G Pontius Jr and K Batchu. 2003. Using the relative operating characteristic to quantify certainty in prediction of location of land cover change in India. Transactions in GIS 7(4) p.467-484. Right click to download. The PDF of Pontius and Batchu (2003) is an electronic version of an article published in Transactions in GIS: complete citation information for the final version of the paper, as published in the print edition of Transactions in GIS, is available on the Blackwell Synergy online delivery service, accessible via the journal’s website at http://www.blackwellpublishing.com/tgis or http://www.blackwell-synergy.com.
  17. R G Pontius Jr, A Agrawal and D Huffaker. 2003. Estimating the uncertainty of land-cover extrapolations while constructing a raster map from tabular data. Journal of Geographical Systems 5(3) p.253-273. Right click to download.
  18. R G Pontius Jr. 2002. Statistical methods to partition effects of quantity and location during comparison of categorical maps at multiple resolutions. Photogrammetric Engineering & Remote Sensing 68(10) p.1041-1049. Right click to download.
  19. R G Pontius Jr, J Cornell and C Hall. 2001. Modeling the spatial pattern of land-use change with GEOMOD2: application and validation for Costa Rica. Agriculture, Ecosystems & Environment 85(1-3) p.191-203. Right click to download.
  20. R G Pontius Jr and L Schneider. 2001. Land-use change model validation by a ROC method for the Ipswich watershed, Massachusetts, USA. Agriculture, Ecosystems & Environment 85(1-3) p.239-248. Right click to download.
  21. L Schneider and R G Pontius Jr. 2001. Modeling land-use change in the Ipswich watershed, Massachusetts, USA. Agriculture, Ecosystems & Environment 85(1-3) p.83-94. Right click to download.
  22. R G Pontius Jr. 2000. Quantification error versus location error in the comparison of categorical maps. Photogrammetric Engineering & Remote Sensing 66(8) p.1011-1016. Right click to download. You can do the calculations described in this paper with the kappapontius1.xls file available below.

PUBLICATIONS AS CONFERENCE PROCEEDINGS:

  1. R G Pontius Jr and Xiaoxiao Li. 2008. Estimating the land transition matrix based on erroneous maps. Conference proceedings of Studying, Modeling, and Sense Making of Planet Earth. Mytilene, Greece 8p. Right click to download.
  2. R G Pontius Jr, Shaily Menon, Joseph Duncan and Shalini Gupta. 2008. GIS methods to quantify effectiveness and leakage in land conservation projects. Conference proceedings of Studying, Modeling, and Sense Making of Planet Earth. Mytilene, Greece 8p. Right click to download.
  3. R G Pontius Jr and M Millones. 2008. Problems and solutions for kappa-based indices of agreement. Conference proceedings of Studying, Modeling, and Sense Making of Planet Earth. Mytilene, Greece 8p. Right click to download.
  4. R G Pontius Jr, J-C Castella, T de Nijs, Z Duan, E Fotsing, N Goldstein, K Kok, E Koomen, C D Lippitt, W McConnell, A Mohd Sood, B Pijanowski, A T Veldkamp, and P H Verburg. 2007. Lessons and challenges in land change modeling as revealed by map comparisons. Proceedings for conference on the science and education of land use: a transatlantic, multidisciplinary and comparative approach. Washington DC USA. September 24-26. 16p. Right click to download. The slides from the conference presentation are below.
  5. R G Pontius Jr and J Connors. 2006. Expanding the conceptual, mathematical, and practical methods for map comparison. Conference proceedings of the meeting of Spatial Accuracy. Lisbon, Portugal. 16p. Right click to download.
  6. L Paladino and R G Pontius Jr. 2004. Accuracy assessment and uncertainty in baseline projections for land-change forestry projects. Conference Proceedings of the joint meeting of The Fifteenth Annual Conference of The International Environmetrics Society and The Sixth Annual Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences. Portland ME. 11p. Right click to download.
  7. R G Pontius Jr, L Claessens, C Hopkinson Jr, A Marzouk, E Rastetter, L Schneider, J Vallino. 2000. Scenarios of land-use change and nitrogen release in the Ipswich watershed, Massachusetts, USA. in B Parks, K Clarke, M Crane, editors. 2000. Conference proceedings of the 4th international conference on integrating GIS and environmental modeling. Boulder: University of Colorado, CIRES.

PUBLICATION AS BOOK CHAPTER:

  1. R G Pontius Jr and B Suedmeyer. 2004. “Components of agreement in categorical maps at multiple resolutions”. p.233-251. Chapter 17 in R S Lunetta and J G Lyon (eds). Remote Sensing and GIS Accuracy Assessment. CRC Press, Boca Raton FL. Right click to download.

PUBLICATION AS SOFTWARE MANUAL:

  1. R G Pontius Jr and H Chen. 2006. GEOMOD Modeling. Chapter of help system in J Ronald Eastman. Idrisi 15: The Andes Edition. Worcester MA: Clark Labs. Right click to download.

You may be interested in the links below.

  1. Scientific Curriculum Vita of Gil Pontius
  2. To compute your own summary statistics from a matrix, right click here and use “Save Target As” to download PontiusMatrix1.xls, which is about 179KB
  3. To download the presentation for 2008 Truman State Math talk by Pontius, right click here and use “Save Target As” to download PontiusMath1.ppt.
  4. To download the presentation for 2008 Truman State Biology talk by Pontius, right click here and use “Save Target As” to download PontiusBiology1.ppt.
  5. To download the document shown at the 2007 Association of American Geographers panel on becoming a writer, right click here and use “Save Target As” to download format01.doc.
  6. Many of the methods that I have created are available in the GIS software Idrisi, which is created by Clark Labs
  7. Syllabus for GEOG110, GES110, GEOG311, ID110, IDCE30212
  8. Syllabus for GEOG260, GEOG360, IDCE367, ID260
  9. See my alter ego, Doctor Stardust, The Award Winning Entertainer