GCLAS Cyber Seminar presentation available here.

Introducing GCLAS

Getting Started

Starting the program on a PC-Windows machine
Starting the program on a UNIX machine
Importing data for analysis

Importing/Opening Data

Import command
    Streamflow data
    Concentration data
Open Command

Overview of GCLAS window and panel interface

Anatomy of the GCLAS display
Transport Relation Window
Rearranging the GCLAS display

Adding and editing concentration data

Using the overview graph and working graph to display curves and data points
Adding/Editing estimated values in the working graph panel
Setting the default representation type of estimated values
Editing data in the tabular data panel
Using the curve label panel

Using the transport relation window to aid estimation

Analyzing and applying cross-section coefficients

Selecting samples and calculating sample-based coefficients
Hand-entering coefficients
Applying coefficients as a function of streamflow
Applying coefficients as a function of time
Applying coefficients as a function of streamflow and time

Computing loads

Saving your work

Exporting data

GCLAS files (gcl format)
Concentrations and/or loads (card-image format)
Streamflow, concentration, and loads (table format)

Quick References

Mouse techniques
Keyboard shortcuts
Curve conventions
Commands (in File menu)
Pick-list entries
Folder Tabs
Buttons
Curve label icons
Coefficient-relation icons
Working graph curve symbols
Editing tabular data
Time editing functions
Date editing functions