IGW-NET provides the user with a variety of options concerning the visualization of model results in the Working Area / Map Display, for both single-realization steady or unsteady models, multi-realization Carlo Simulations (MCS) for groundwater flow and transport, or even INFIL-based watershed models available in IGW-NET
IGW-NET also provides plan-view display of model inputs (e.g.) hydraulic conductivity, recharge, aquifer thickness, and transmissivity.
A. Conceptual Outline Color
B. Main Display
B1. Head Draw Options
B2. Conc Draw Options
B3. Velocity Draw Options
C. MCS Display
D. Watershed Display Options
E. Input Display Options
F. Cell Color
A. Conceptual Outline Color
The top panel allows users to customize the color assigned to conceptual model features drawn in the map display for an IGW-NET model:
- Domain - domain polygons/rectangles
- Zone - zone polygons/rectangles
- line - lines
- PTK - particle release features (particle zones/polygons and particle lines)
- CSline - cross-section line
- SelectPolygon - currently selected feature for editing
B. Main Display
The results of the current time-step (or a single steady-state output) are automatically shown in the Map Display / Working Environment. If you are performing a Monte Carlo Simulation, the Main Display options control the output from the current realization. (MCS Display controls the display of statistics computed across realizations - see below.)
Use the ‘Display Option’ pull-down menu to choose how the groundwater flow results will be displayed:
- with black head contour lines and velocity vectors (Contours and Vectors)
- with a head color map overlaid by black contour lines and velocity vectors (Color Map)
- with velocity vectors only (Vectors Only)
- with head contours only (Contours Only)
- with a color map only (Color Only)
- with head contours and a color map only (Contours and Color Map)
- and with a color map and velocity vectors (Color Map and Vectors)
You can also choose to disable showing the model output by selecting 'None', for example, when you want to carefully examine model input data layers.
Check/uncheck the box next to
Scale Bar to turn on/off the scale bars along the edge of the model domain in the map display.
Check/uncheck the box next to
Grid lines to turn on/off the model grid in the map display. Click the 'Show Refined Grid' button to open a new interface to show the nested sub-grid setup by the user (requires using grid refinement zones, lines, and/or wells in the model and simulating using MODFLOW6 solver - see the "Unstructured Grid Model' IGW-NET tutorials).
The text box next to
‘Overlay Transparency:’ determines the transparency level (0-100%) of the groundwater flow results overlay. By default, this is set to zero.
The
'High Resolution' display output option is only available for IGW-NET Premium users.
The
'on GE' option will create output head and vectors files suitable for overlaying in Google Earth. If this box is checked, a KML file will be created, and a link to the KML file will be added next to this option after the image results are overlaid to the Map Display / Working Environment. Then, users can open Google Earth manually and clock the link to show the results in Google Earth. The KML file will be updated/refreshed automatically if the model is transient (transient flow, or steady state flow with particle tracking or plume transport. Particles or plumes will move simultaneously with the plan-view model.
The
'Overlay Delay Time:' controls the update/refresh rate of the KML file in Google Earth.
B1. Head Draw Options
By default, the results are shown for the entire range of interpolated values ('Data Limits' option). Choose the 'Data Given' option to use a custom range of values. You can control the color contour/color interval, i, by specifying the number of breaks and max and min values: i=(max-min)/(breaks-1).
Check the box next to 'Head Legend' to display a head legend in the Map Display / Work Environment. The 'Label Filter' allows controlling the number of equal intervales to divide the data range for display purposes, computed as i/(label filter). For example, if i=30, and (label filter)=2, 15 color intervals will be used in the legend and map display.
B2. Conc. Draw Options
This set of options functions the same as the 'Head Draw Options', but only for simulated solute chemical concentration.
B3. Velocity Draw Options
The density of velocity vectors shown in the display is determined by the number grid cells to skip before drawing another velocity vector, both in the X (W-E) and Y (N-S) directions. Use the text boxes provided next to ‘Draw Vector Every:’ to specify how often a velocity vector should be drawn in the display. By default, vectors are drawn every grid point in both the X and Y directions.
You can also control the maximum length of the velocity vectors and the vectors thickness (i.e., the number-of-pixels-wide) with the input fields next to 'Max Velocity Length' and 'Vector Thickness'.
Equal Length : check this box to make all arrows the same length and size, regardless of the groundwater velocity they represent.
Velocity color options: Information coming soon!
C. MCS Display
Check this box to enable/access the Monte Carlo Simulation display options. Parameters that can be displayed include:
- Mean Velocity (vectors)
- Capture Zone color/contour map(reverse particle tracking applications)
- Mean Conc, or a color/contour map of the mean chemical concentration across different realizations
- Mean Head across realizations as a color/contour map
- Mean Conductivity across realizations as a color/contour map
- Conc Variance, or a color/contour map of the chemical concentration variance across different realizations
- Head Variance across realizations as a color/contour map
- Conductivity Variance across realizations as a color/contour map
NOTES about MCS
1) Monte Carlo Simulation must be enabled for MCS Display to work (DomainAttr > Simulation Settings > Matrix Solver > Monte Carlo Simulation)
2) When performing concentration transport, particle tracking and/or transient head analysis in MCS mode, IGW-NET automatically calculates and stores statistics for probabilistic analysis from the last time step only.
3) MCS parameters/outputs begin to be displayed at the end of the 2nd realization. During realization 1 and 2, only the current realization results are shown.
D. Watershed Model Display
Check the box in this section to turn on display of INFIL-based watershed model inputs or outputs in IGW-NET. Select a watershed model parameter from the drop-down list and customize the display options (the set of options is similar to the 'Head Draw Options' described above).
Parameters to draw:
- Manning (Manning's roughness coefficient for overland and channel flow)
- Retention
- Ks (saturated hydraulic conductivity of soil)
- Hav
- CtaS
- Saturation
- Rint
- EVT
- WDepth
- Finf
- Prec
- swVelocity [INACTIVE]
- Rinf
- Qsw_gw [INACTIVE]
- DEMStream [INACTIVE]
- Qsw_gw1 [INACTIVE]
- SW_Rch
- RootZdepth
- LUCindex (Land use / land cover index)
To display a model input, check the radio box next to ‘Display Input’, then select the model variable from the corresponding drop-down menu. Click ‘OK’ to save the changes, then re-submit the model for simulation. The model inputs will appear in the model domain when the simulation is finished.
Check the box next to Log Scale' to display the select input parameter using a log scale/
When ‘Seepage Area’ is selected from the ‘Default Input’ drop-down menu, and the radio box next to ‘Display Input’ is checked, the updated display will include purple cross-hair graphics in locations where groundwater is seeping to the surface (i.e., water is leaving the aquifer to discharge to a surface water body such as a stream, lake, wetland, etc.).
By default, seepage elevation is set to aquifer top elevation (unless there is a local zone or line feature with a different prescribed seep elevation). Check the box next to 'Seep:Elev -' to apply an offset to the seepage elevation and display areas where groundwater exceeds the offset seep elevation (display only!). For example, if an offset of 1ft is used, the display will show all areas where head exceeds: local seepage elevation minus 1 ft.
F. Cell Color
The bottom panel allows users to display grid assignments (cell types) after discretization of the conceptual groundwater model into a numerical model (check a box to "turn on" the display:
- Specified head (prescribed in space and time)
- General head (general head-dependent flux)
- River (two-way head-dependent flux)
- Recharge (recharge input)
- Drain (one-way head-dependent flux)
- Source Conc (Source of solute for transport simulation)
- EVT (evapotranspiration)
- Inactive