EnvirVis: Workshop on Visualisation in Environmental Sciences
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Browsing EnvirVis: Workshop on Visualisation in Environmental Sciences by Author "Dang, Tommy"
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Item SOAViz: Visualization for Portable X-ray Fluorescence Soil Profiles(The Eurographics Association, 2019) Pham, Vung; Dang, Tommy; Bujack, Roxana and Feige, Kathrin and Rink, Karsten and Zeckzer, DirkThe soil is an essential element of life. It is where people grow plants for food, fibers, and other materials. It also helps to filter water and recycles wastes. Therefore, understanding soil physical/chemical characteristics and structural aggregation are of vital importance. In this project, we work closely with the soil scientists to develop a visualization solution to the rapidly gaining favor approach to soil horizon analysis using Portable X-ray Fluorescence (pXRF) devices. Our visualization, called SOAViz, aims to provide soil scientists with rapid valuable insights into soil properties both visually perceptible with graphs and imperceptible quantification features with statistical calculations from the data collected from pXRF equipment. SOAViz was developed with analysis tasks solicited from the soil scientists and validated by applying to real soil profiles collected in an Experimental Rangeland in Lubbock, TX, USA. This visual solution together with the quick scanning results from pXRF devices offers a timely means of quantifying elemental concentrations in the soil horizons in large scale at a reduced cost.Item SoilScanner: 3D Visualization for Soil Profiling using Portable X-ray Fluorescence(The Eurographics Association, 2020) Pham, Vung; Weindorf, David; Dang, Tommy; Dutta, Soumya and Feige, Kathrin and Rink, Karsten and Zeckzer, DirkSoil scientists perform similar types of exploratory analysis repeatedly, such as generating the spatial distribution of chemical elements. The soil analysis process is time-consuming (may take days or weeks), labor-intensive (involving many people with different expertise for data collection, measurements, visual representation, and data analysis), and involving various tools (from traditional software, such as Microsoft Excel, to some complicated packages such as ArcGIS and MatLab). Inspired by medical scanning, this paper proposes a 3D visual solution, which can be generated via a web interface, allowing Soil scientists to perform on-the-field analysis. Our visualization prototype, named SoilScanner, supports a full range of interactive operations, such as ranking, filtering, brushing and linking, and detail on demand. We also demonstrated the usability of our SoilScanner visualizations on the soil profiles in West Texas, USA, collected via portable X-ray fluorescence spectrometers.