====== Grid Dataset ======

A Grid Dataset represents a section of a 2D Grid. A 2D grid consists of regularly spaced rows and columns of numeric values. Usually the value is an elevation.

__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.
==== File source ====

Grids datasets read directly from a [[:geoscene3d:project_content:sources:file_source|]] do not require any configuration. Supported file formats include:

[[:geoscene3d:project_content:dataformats:surfer_grid_file_format|]]\\
[[:geoscene3d:project_content:dataformats:arcinfo_ascii_grid_file_format|]]\\
[[:geoscene3d:project_content:dataformats:vertical_mapper_grid_file_format|]]

==== Access Database Source ====

A single grid from an [[:geoscene3d:project_content:sources:access_database_source|]] in [[:geoscene3d:project_content:dataformats:model_database_format|Model Database]] format. When this source type is used the following configuration is required.

__Model ID:__ ID for the model\\
__Grid ID:__ ID for the grid within the model with ModelID\\
__Band Number:__ Band number for the grid selected with grid ID. Note: Each grid may contain multiple bands (or layers). Each of these bands can be used as a grid dataset.
==== DHI File Source (dfs) ====

A single grid time step from a [[:geoscene3d:project_content:sources:dhi_file_source_dfs|]]. Files may be dfs2 or dfs3 that are both sub types of the [[:geoscene3d:project_content:dataformats:dhi_file_system_format|DHI File System]] format. The dataset is configured to point to one of the time steps in the file. For dfs3 files a layer must also be selected.

The top portion of the configuration dialog shows the number of time steps in the file and the time period covered in the file.

__Step Index:__ The index of the grid time step in the file (first index is 0).\\
__Date:__ Date for the time step. Note: setting the date is just another way of selecting the time step.\\
__Time:__ Time for the time step. Note: setting the time is just another way of selecting the time step.\\
__Item:__ Selects the dfs file item.\\
__Layer:__ Selects the layer index in the item (first layer is 1). Layer is selected in dfs3 files only.
==== CSV File Source ====

A single grid file ( [[:geoscene3d:project_content:dataformats:surfer_grid_file_format|Surfer Grid Files]] or [[:geoscene3d:project_content:dataformats:arcinfo_ascii_grid_file_format|ArcInfo ASCII Grid Files]] ) from a Grid Time Series where the source is a group of grid files. See [[:geoscene3d:project_content:datasets:grid_time_series_dataset|]].

The top portion of the configuration dialog shows the number of time steps in the file and the time period covered in the file.

__Step Index:__ The index of the grid time step in the file (first index is 0).\\
__Date:__ Date for the time step. Note: setting the date is just another way of selecting the time step.\\
__Time:__ Time for the timestep. Note: setting the time is just another way of selecting the time step.
==== GeoCloud Source ====

A single grid from a [[:geoscene3d:project_content:sources:geocloud_source:geocloud_source|]]. The grid is extracted from the GeoCloud service via the internet.