Table option
If the Table option is selected from the drop-down menu, an empty Calibration Data window will appear (see Figure 6 5). The first (header) line must include the following text:WellID,Time,X, Y,Zf,Zt,LyrIndex,V,Icolor
One observation per line may be added after the first line.
• the 1st value is the well ID (WellID)
• the 2nd is the current time step in the case of transient modeling, expressed as the number of days from the simulation starting date (which is set in the Simulatoin Settings tab of the Domain Attributes menu). For steady simulations, a ‘0’ value is used to indicate that the comparison is for steady state.
• the 3rd is the x-coordinate of the observation (X), e.g., longitude
• the 4th is the y-coordinate of the observation (Y) , e.g., latitude
• the 5th is the well screen top elevation (Zf), in units of meters above sea level. Typically wells are screened across a depth interval; Zf ("Z from") is the elevation the at which the screen is first encountered as one moves into the surface ("screened from an elvation of...").
• the 6th is the well screen bottom elevation (Zt), in units of meters above sea level. Zt ("Z from") is the elevation the at which the screen terminates as one moves into the surface ("...to a deeper elevation of...").
• the 7th is the layer index (LyrIndex), which can be used if the well is to be placed in a specific geological/computational layer in the case that well screen top and bottom elevation information is not available. By default, this value is set to ‘0’ so that the Zf and Zt values are used
• the 8th is the head observation/field measurement (obs), in units of meters
• the 9th is used to specify long-type RGB (Red-Green-Blue) color of the data markers in the calibration plot
File option
If a .txt file with the appropriate format is available on user’s local machine or network drive, it can be loaded into the Calibration Data window.click the “Browse…’ button to launch a file browser and navigate to and select the appropriate file for importing.Observations stored in vector (point) data (shapefile format) can be imported by selecting 'From a shapefile'. More details are available once this option is selected.
NOTE: Importing very large datasets (many calibration points) into the Maps Display and Working Area may significantly slow down the modeling page response time. Use the Show Points/Hide Points buton (see below) to avoid this issue once the data have been imported.
Adding data
To use the imported/entered data for comparison to model results, click the ‘Click to Add Data’ button, then click ‘OK’ to use the data points in the calibration chart. Click on the ‘ReDraw’ button to plot simulation results versus the observation data.Map Data Markers
Once the scatter point data have been entered/imported to the table display, click the ' Add Marker' button to create data markers that can be shown/hidden on the Google maps/Bing maps.Once the data markers are created, use the 'Show Points'/'Hide Points' button toto show or hide those markers in the Map Display and Working Area.
Draw OBS Trend (transient calibration)
This option is available when importaning transient observation data for a transient simulation, via the post-processing tool ('Analysis Tools' > 'Analysis' > 'Post Analysis' > 'Calibration' > 'Transient Calibration Chart'). After extracting SWL data from the server or aNOTE about transient calibration The observation data "time stamp" must be consistent with the simulation time period. For example, if you try to import SWLs from the Data Center for the period 2000-2005, and your simulation is for the period 2010-2015, IGW-NET will NOT display observation data in the calibration chart after extracting the SWLs.