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    • ISSN: 1793-8201 (Print), 2972-4511 (Online)
    • Abbreviated Title: Int. J. Comput. Theory Eng.
    • Frequency: Quarterly
    • DOI: 10.7763/IJCTE
    • Editor-in-Chief: Prof. Mehmet Sahinoglu
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IJCTE 2014 Vol.6(3): 210-214 ISSN: 1793-8201
DOI: 10.7763/IJCTE.2014.V6.864

EasyGrapher: Software for Data Visualization and Statistical Evaluation of DSSAT Cropping System Model and the CANB Model

J. Y. Yang, C. F. Drury, J. M. Yang, Z. T. Li, and G. Hoogenboom

Abstract—Crop simulation models are process-based and can provide very detailed outputs of the simulated crop and soil processes. However, analyzing the outputs is challenge. EasyGrapher (EG) is a graphical and statistical software program designed for the DSSAT v4.xcrop models, and it also supports graphing Canadian Agricultural Nitrogen Budget (CANB) v3.0 model. EG allows users to manipulate hundreds of graphs within minutes and calculates evaluation statistics. Specifically, EG v4.5 can support 16 outputs of DSSAT v4.5 to: (1) create time-series graphs and display measured data in the simulation graphs; (2) graph simulated data against measured data and (3) calculate evaluation statistics (RMSE, E, EF and d). EG v4.5 can support outputs of CANB v3.0 to create bar plots for spatial-series graphs in various scales. The EG program has the potential to carry out graphic and statistical tasks for other models. Graphic and statistical evaluation examples were illustrated using field dataset collected from our experiments in Canada and China, as well as dataset resided in the DSSAT software.

Index Terms—Cropping system models, data visualization, decision support system for agro-technology transfer (DSSAT), EasyGrapher, process-based simulation, statistical evaluation.

J. Y. Yang, C. F. Drury, and Z. T. Li are with Greenhouse and Processing Crops Research Center, Agriculture and Agri-Food Canada, 2585 County Road 20, Harrow, ON, N0R 1G0, Canada Z.T. Li is also with the School of Life science, Lanzhou University, Lanzhou, 730000, China (e-mail: Jingyi.yang@agr.gc.ca, craig.drury.@agr.gc.ca, Zhuoting.li@agr.gc.ca).
J. M. Yang is with College of Resource and Environment Science, Jilin Agricultural University, Changchun, 130118.
G. Hoogenboom is with the AgWeatherNet Program, Washington State University, Prosser, WA 99350-8694, USA (e-mail: gerrt.hoogenboom@wsu.edu).

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Cite:J. Y. Yang, C. F. Drury, J. M. Yang, Z. T. Li, and G. Hoogenboom, "EasyGrapher: Software for Data Visualization and Statistical Evaluation of DSSAT Cropping System Model and the CANB Model," International Journal of Computer Theory and Engineering vol. 6, no. 3, pp. 210-214, 2014.


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