An ODV Dataset represents a group of ODV (One Dimensional Vertical) geophysical resistivity layer models. The dataset is defined with a query that consists of a rectangular extent, settings for data type, and optional SQL. ODV Datasets are used in the ODV Models (1D Geophysics) Object.
Access Database Source in GERDA Database Format
Firebird Database Source in GERDA Database Format
CSV File Source (generic CSV file format)
When using a generic CSV file source it must be formatted as show here. The column names are identical to field names in the GERDA Database Format. All columns are required but may be in any order. Corresponding table and field names from GERDA is shown in parenthesis in the field description below the example.
NAME;IDENT;DATATYPE;DATSUBTYPE;MODEL;POSITION;XUTM;YUTM;ELEVATION;LAYER;RHO;THICKNESS;DEPTOP;DEPBOTTOM Sounding1;LongNameForSounding1;tem;tem40;5424;1;572132;6216112;64.24;1;38;11.8;0;11.8 Sounding1;LongNameForSounding1;tem;tem40;5424;1;572132;6216112;64.24;2;19.9;14;11.8;25.8 Sounding1;LongNameForSounding1;tem;tem40;5424;1;572132;6216112;64.24;3;146.7;32.5;25.8;58.3 Sounding1;LongNameForSounding1;tem;tem40;5424;1;572132;6216112;64.24;4;8.7;;58.3; Sounding2;LongNameForSounding2;tem;tem40;5425;1;572669;6216031;69.74;1;34.3;11.7;;11.7 Sounding2;LongNameForSounding2;tem;tem40;5425;1;572669;6216031;69.74;2;18.6;46.1;11.7;57.8 Sounding2;LongNameForSounding2;tem;tem40;5425;1;572669;6216031;69.74;3;2.5;;57.8; Sounding3;LongNameForSounding3;tem;tem40;5426;1;572769;6216243;79.68;1;21.2;18.4;0;18.4 Sounding3;LongNameForSounding3;tem;tem40;5426;1;572769;6216243;79.68;2;33.1;44;18.4;62.4 Sounding3;LongNameForSounding3;tem;tem40;5426;1;572769;6216243;79.68;3;3.4;36.1;62.4;98.5 Sounding3;LongNameForSounding3;tem;tem40;5426;1;572769;6216243;79.68;4;1;;98.5; Sounding4;LongNameForSounding4;tem;tem40;5427;1;572519;6216406;78.79;1;78.5;1.9;0;1.9 Sounding4;LongNameForSounding4;tem;tem40;5427;1;572519;6216406;78.79;2;26.2;59.9;1.9;61.8 Sounding4;LongNameForSounding4;tem;tem40;5427;1;572519;6216406;78.79;3;6.8;;61.8; . . .
NAME: Short name of model (MODEL.NAME)
IDENT: Long dame of model (MODEL.IDENT)
DATATYPE: Primary datatype (ODVMODSE.DATATYPE)
DATSUBTYPE: Secondary datatype (ODVMODSE.DATSUBTYPE)
MODEL: Primary Model ID (ODVPOS.MODEL)
POSITION: Secondary Model ID in case the same model consists of multiple sub models (ODVPOS.POSITION)
XUTM: Easting (ODVPOS.XUTM)
YUTM: Northing (ODVPOS.YUTM)
ELEVATION: Model elevation (ODVPOS.ELEVATION)
LAYER: Model layer ID (ODVLAYER.LAYER)
RHO: Layer resistivity (ODVLAYER.RHO)
THICKNESS: Layer thickness (ODVLAYER.THICKNESS)
DEPTOP: Layer top depth (ODVLAYER.DEPTOP)
DEPBOTTOM: Layer bottom depth (ODVLAYER.DEPBOTTOM)
Regardless of source an ODV Dataset is defined in the same way
Fixed Extent: By default the dataset extent is identical to the current scene extent. However, this option makes it is possible to fix the extent to any area.
Extent: Defines a rectangular area where data are extracted from the source.
Model Selection
Type: Data type, e.g., “PACES” or “TEM”. This setting corresponds to the field ODVMODSE.DATATYPE in the GERDA Database
Sub Type: Data sub type e.g., “TEM40” or “SKYTEM1”. Used for data type “TEM” only. This setting corresponds to the field ODVMODSE.DATSUBTYPE in the GERDA Database
Edition: Selection of all model edition or a specific model edition. This setting corresponds to the field MODEL.EDITION in the GERDA Database.
Note: Use following SQL to select more than one model edtion in SKYTEM data (In this dataset, the model edtions are numbered 3269, 3370 and 3391)
Model Layers
More Than: Include models with more than this number of layers
Less Than: Include models with less than this number of layers
Additional “WHERE” conditions (optional): The dataset may be refined further using SQL. This is an advanced option that can be used for users that has an in depth knowledge of the GERDA Database Format. May also be used with the generic CSV format but field names in the SQL is of course limited to the fields present in the CSV File
Preview SQL…: Shows a preview of the resulting query. Advanced users can use this option to analyze the resulting query.
Preview Data…: Shows a preview of the data resulting from the query using the Dataset Viewer.