Arc Hydro Time Series Tools
Jon Goodall, CRWR
Table of Contents
The Arc Hydro Time Series Component provides a means for storing spatially and temporally irregular measurements of nearly any variable. The information is stored within two tables. The first table, named TimeSeries, is a repository for all the measurement values and the time they where collected. The second table, named TSType, is a metadata catalog for describing what the properties of a particular type of time series. While this is a very general and flexible system for handling different types of time series, it is not easy to understand, analyze, or visualize the time series in its native data format.
For this reason, we have begun to develop tools for visualizing time series stored in Arc Hydro both through ArcMap and with a standalone application. The first tool is called TSPlotter and is a extension to ArcMap for graphing time series for a selected set of features over a user defined interval of time. The second tool is called TSViewer and is a standalone application that will allow the user to query an Arc Hydro database for time series records related to a particular feature, and to plot one or more types of time series related to one or more spatial feature.
The purpose of these tools is simply to allow one to quickly view temporal information within an Arc Hydro geodatabase. The tools are not designed for performing complex time series analysis or modeling, although the TSViewer application does allow adding and subtracting of time series to perform simple water balance accounting. Instead, the tools provide a meant for selecting a subset of data within an Arc Hydro geodatabase and "rearranging" the data into provide useful information to an end user.
Future direction for this research will focus extending the TSViewer application to allow users to interact with a map when selecting time series collections, and the improved ability to perform water balance accounting. The TSPlotter tool is available for download now. The TSViewer is still under development, but will be provided via this website shortly.
TS Plotter - An ArcMap tool for plotting time series for one or more selected features.
TSPlotter documentation (includes a tutorial for installing TSPlotter.dll)
TS Viewer - A program for extracting, graphing, and viewing Arc Hydro time series.
Additional ArcObjects code for interacting with Arc Hydro TimeSeries and interacting with ArcMap are available on Jon Goodall's UT website (https://webspace.utexas.edu/jgoodall/ArcGISCode.htm)
Primary contact for Arc Hydro TimeSeries:
Jon Goodall
University of Texas at Austin
Center for Research in Water Resources
Austin, Texas 78712
e-mail:
goodalljl@mail.utexas.edu
Phone: (512) 471-0110
Fax: (512) 471-0072
These materials may be used for study, research, and education, but please credit the authors and the Center for Research in Water Resources, The University of Texas at Austin. All commercial rights reserved. Copyright 2004 Center for Research in Water Resources.