DataGrapher: Walk-Through Guide
The Data Grapher is a set of online tools that allow users to create customized graphs and tables of a whole variety of time-series data that are served up by the U.S. Geological Survey. Now, if you've never been here before, it probably would be helpful to check out the Help system. Under the Help menu, there are a number of tutorials and example graphs. Under Example Graphs, you can kind of get a sense for the types of graphs that can be made with the Data Grapher system. These are time-series graphs of a couple different parameters, or comparing time series among different sites-- two or three sites, showing repeating patterns over years, making color maps, and so forth. So, that's a good place to start...