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TopEnvironmental data are growing bigger and becoming more important due to a significant development of environmental monitoring. Therefore, data portals, such as Climate Data Portal (Soreide, Sun, Kilonsky, & Denbo, 2001), NCCP, and GPS Explorer data portal, are becoming more important to share such data. Sensor Web Services-based observation/analysis/modeling is focused on collecting and sharing the environmental sensor data at the portal (Xianfeng, Chaoliang Kagawa & Raghavan, 2010. Bock, Crowell, Prawirodirdjo & Jamason, 2008).
However, majority of portals need to improve their data visualization for real-time visualization data Web Service. Most of visualization research is practiced with off-line tools. For example, Mathematical toolssuch as Matlab (Azemi, & Stook, 1996), Mathematica (Savory, 1995), GODIVA (Xiaosong, Winslett, Norris, & Xiangmin, 2004) and so on, are typically included in visualization routines and so are off-line visualization tools such as Origin (Yingqi, 2011), Mayavi (Ramachandran, & Varoquaux, 2011), and R-software (Voulgaropoulou, Spanos & Angelis 2012). These tools are not suitable for data portal as they are not based on on-line visualization.