iMOD User Manual version 5.2 (html)

11.14Tutorial 13: MetaSWAP Analyser Tool

This tutorial gives a brief introduction to the MetasSWAP Analyser Tool which serves to display and analyse the MetaSWAP modelinput (values, spatial data and time series). See for more detailed references regarding MetaSWAP chapter A.



This is what you will do:

Required Data

For this tutorial you need the following iMOD Data Files/folders:

Getting Started

Search for an existing Model Results Folder There are two ways to select a folder with existing model data: using the default iMOD model folder or browse to a preferred model folder.
The Tutorial data is not in the default folder so we follow the next steps:

In the Available (sub)folder overview iMOD lists all available model folders.

In case an Error window opens stating that an "ASC file cannot be opened", the data of this Tutorial was probably not installed correctly. To solve this manually, open the file ..\TUT_MetaSWAPAnalyser \model_MetaSWAP \MetaSWAP \Mete_grid.inp in a text editor and change the paths of the files ("$DBASE$") to the path on your computer, e.g. c:\Projects\imod5.1\.

If no error occurs, iMOD will open and process all MetaSWAP files. If this is successfully done, all remaining Tabs of the windows are made active.

The next step is to load a Landuse map as a background image for orientation.

It is also possible to zoom to the extent of the chosen model.

Analyse the coupling between MetaSWAP and Modflow components

Now we start hovering over the model area to see what SVAT elements are available.

This Tab shows the ID relations between the Modflow model, the MetaSWAP model and the Meteo data and displays the surface area of the different elements.


Figure 11.181: Example of MetaSWAP parameters on the Coupling svat tab.

Hover and display all available MetaSWAP parameters


Figure 11.182: Example of MetaSWAP parameters on the Parameters tab.

For a specific analyses of your model, the total list of parameters is probably to long. Some parameters are even listed more than one time (e.g. SVAT-ID). We will now shorten the list and select only the parameters of our choice.


Figure 11.183: Example of preferred settings on the Settings tab.

Some parameters (especially in the files Mete_Grid.INP and the Fact_Svat.INP) are time dependent. In those cases the table displays the message only graph in the column Value. If a graph is ’On’ (see column Graph) the time series is selected for displaying.


Figure 11.184: example of 4 time series in the Graph window.

There is no need to close the Graph window if the time series for another cell are desired. In that case, start the Inspector and hover to the new cell location. Select the cell with the left mouse button and click the Draw Graph... button again

It may take a long time before all time series are processed and displayed. There are 2 options to speed up this process.
- By default iMOD will display all available time steps; first we will decrease the time window.
- By default iMOD reads the Meteo data from the non-binary *.ASC files. A switch to (prepared) IDF files is available. Lets test these options.

While hovering over the model area, it is helpful to have more background IDFs plotted. The MetaSWAP Analyser facilitates in a series of default IDF files:

Inspect the Irrigation relations One tab, the Irrigation tab, specifically displays all the irrigation related parameters. It presents parameters like source type, source layer, period and gift and shows relations between the source location and the irrigation location.

By default iMOD only displays parameters for the irrigation svat selected. In MetaSWAP there is the option to abstract water for irrigation from one location and distribute it over a series of surrounding locations. The MetaSWAP inspector can display these relations.

Now the lower part of the window is active and shows information on both the extraction and irrigation location.

In many real world cases both locations are the same, in some cases the irrigation cells surround the one source like an umbrella as you can see in this example.
The picture below is a synthetic example of such a relation between the irrigation locations and its source.


Figure 11.185: Synthetic example irrigation relations.