SMS:Error Summary Plot: Difference between revisions
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An Error Summary plot is used to display a text listing of the mean error, mean absolute error, and root mean squared error for a data set and the observed values associated with a mesh or grid on observation points in the Observation Coverage. The errors shown are the mean errors for all observation points with computed data. | An Error Summary plot is used to display a text listing of the mean error, mean absolute error, and root mean squared error for a data set and the observed values associated with a mesh or grid on observation points in the Observation Coverage. The errors shown are the mean errors for all observation points with computed data. | ||
: '''''Mean Error''''' | : '''''Mean Error''''' – This is the average error for the points. This value can be misleading since positive and negative errors can cancel. | ||
: '''''Mean Absolute Average''''' | : '''''Mean Absolute Average''''' – This is the mean of the absolute values of the errors. It is a true mean, not allowing positive and negative errors to cancel. | ||
: '''''Root Mean Square''''' | : '''''Root Mean Square''''' – This takes the sum of the square of the errors and then takes its square root. This norm tends to give more weight to cases where a few extreme error values exist. | ||
Error Summary plots are created in the Plot Wizard by setting the plot type to Error Summary. A sample plot is shown in the figure. | Error Summary plots are created in the Plot Wizard by setting the plot type to Error Summary. A sample plot is shown in the figure. | ||
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After the plot type is set in the first step of the Plot Wizard, the Next button is clicked to move to the second step of the Plot Wizard. | After the plot type is set in the first step of the Plot Wizard, the Next button is clicked to move to the second step of the Plot Wizard. | ||
'''Coverage | '''Coverage''' – Displays the name of the coverage where the current data for the plot is coming from. | ||
'''Measurement | '''Measurement''' – This is the name of the current measurement, created in the Feature Objects | Attributes dialog, being plotted. | ||
'''Feature Objects | '''Feature Objects''' – Displays which feature object is utilized in the current plot, points or arcs. | ||
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* [[SMS:2D Plots|2D Plots]] | * [[SMS:2D Plots|2D Plots]] | ||
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[[Category:SMS Plots]] | [[Category:SMS Plots]] | ||
Revision as of 22:38, 13 November 2012
An Error Summary plot is used to display a text listing of the mean error, mean absolute error, and root mean squared error for a data set and the observed values associated with a mesh or grid on observation points in the Observation Coverage. The errors shown are the mean errors for all observation points with computed data.
- Mean Error – This is the average error for the points. This value can be misleading since positive and negative errors can cancel.
- Mean Absolute Average – This is the mean of the absolute values of the errors. It is a true mean, not allowing positive and negative errors to cancel.
- Root Mean Square – This takes the sum of the square of the errors and then takes its square root. This norm tends to give more weight to cases where a few extreme error values exist.
Error Summary plots are created in the Plot Wizard by setting the plot type to Error Summary. A sample plot is shown in the figure.
Error Summary Plot Options
After the plot type is set in the first step of the Plot Wizard, the Next button is clicked to move to the second step of the Plot Wizard.
Coverage – Displays the name of the coverage where the current data for the plot is coming from.
Measurement – This is the name of the current measurement, created in the Feature Objects | Attributes dialog, being plotted.
Feature Objects – Displays which feature object is utilized in the current plot, points or arcs.
Related Topics
SMS – Surface-water Modeling System | ||
|---|---|---|
| Modules: | 1D Grid • Cartesian Grid • Curvilinear Grid • GIS • Map • Mesh • Particle • Quadtree • Raster • Scatter • UGrid |  |
| General Models: | 3D Structure • FVCOM • Generic • PTM | |
| Coastal Models: | ADCIRC • BOUSS-2D • CGWAVE • CMS-Flow • CMS-Wave • GenCade • STWAVE • WAM | |
| Riverine/Estuarine Models: | AdH • HEC-RAS • HYDRO AS-2D • RMA2 • RMA4 • SRH-2D • TUFLOW • TUFLOW FV | |
| Aquaveo • SMS Tutorials • SMS Workflows | ||
