DataGrapher: Introduction and Navigation Menu

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Detailed Description

The USGS Data Grapher is a set of internet-based tools that allows users to create customized graphs and tables of continuous monitoring data, including water-quality, meteorological, and streamflow data. Each tool or feature performs a particular task...
 

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Image Dimensions: 640 x 360

Date Taken:

Length: 00:04:01

Location Taken: OR, US

Transcript

The USGS Data Grapher is a
set of Internet-based tools

that allows users to create customized graphs
and tables of continuous monitoring data,

including water-quality,
meteorological, and streamflow data.

Each tool or feature performs a particular task.

Time Series.

For the one-site program or feature,

the Data Grapher plots either
a time series or XY graph

(where one parameter is plotted
against a different parameter)

from data available at only one site.

The time series plot is the default option.

The two-site feature plots one
parameter from each of two sites

as either a time series plot or XY graph.

For example, one parameter from one
site may be plotted on the X-axis

while the same parameter from another
site would be plotted on the Y-axis.

The three-site feature plots
a parameter of your choice

from three different sites as a time-series graph.

"By year or month" plots time-series data
from multiple years on a single date axis

labeled as either day of
year or a particular month.

The multiple graphs feature plots graphs for
multiple parameters for a specific time period.

For example, you can plot turbidity,
temperature, and pH for October 2006

without having to redo the one site tool three
separate times for three different parameters.

The last option under this menu is Color Maps.

Color maps are unique plots that use color
gradients to help users visualize the plotted data

as a function of time of day or day of year.

XY Graphs.

XY graphs are separated
into three different tools.

Specialized plots an XY graph but with the
option of highlighting specific time periods.

Simple is identical to the XY
feature from the time series tool,

where one parameter is plotted on the X-axis

and another parameter is plotted
on the Y-axis for one site.

Similarly, two site allows for the comparison of
parameters from two sites plotted as an XY graph.

Polar Graphs.

Polar graphs are available for sites with
measured wind speed and wind direction data.

Unlike the time series or XY graphs
that plot along a square grid,

polar graphs plot in a circular
pattern away from a central origin.

Wind Rose.

A wind rose diagram is very
similar to a circular bar graph.

The direction vector plots using
the 360 degree compass direction,

where 0 or 360 degrees is
north, 90 degrees is east,

180 degrees is south, and 270 degrees is west.

The height of the bars
represents a frequency histogram.

Speed/Direction.

For the speed/direction tool, the length of
the direction vector, or distance from center,

represents the magnitude of the wind speed.

Direction is the direction.

Tables.

Data Tables.

Data tables allows users to
construct customized tables

of any available data in the Data Grapher system.

Monthly inventory and daily inventory are
table features that offer easy visualization

of when data are available for a particular site.

Help.

The last feature along the
navigation bar is the help menu.

The help menu offers user tutorials, such as this,

as well as examples of plots that demonstrate
how USGS water-quality data can be used.