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TerraView 5.0 - Main concepts
The new concepts adopted in TerraLib/TerraView 5.0 are summarized here in a way users of TerraView 4.2.2 will quickly understand the main changes.
| From: TerraView 4.2.2 | To: terraView 5.0 | Rationale |
| Infolayer, Vector | Vector | It will be a database stored into the datasource defined by the user |
| Infolayer, Raster | Raster | It will be a raster file stored in a Directory defined by the user (outside the database) |
| Tabular Layer | Tabular | It will be a database stored into the datasource defined by the user |
| External Tables | Tabular | It will be database stored as a tabular layer into the datasource defined by the user |
| View | Map Display | A View can be compared to the Map Display (the view projection is the Map Display SRID adopted to visualize all layers) |
| Theme | Layer | Layer showed in a Map Display (reprojected to the Map Display SRID) |
| Theme Visual | Layer Style | The Visual concept is the Layer Style stored inside the Project file |
| Project File (*.tview) | For each Layer, the Project file keep a reference to a dataset stored in a datasource and also keep its style(point/line/polygon) of visualization,etc. |
|
| Layer Explorer | It lists all Layers referenced in a Project | |
| DataSource | Data Source is a location where to find data (Postgis Database, Microsoft Access Database, Directory of vector files, Directory of raster files and URL) | |
| Connector | It is used to registry an existing datasource (or to define a new datasource) into a file called datasource.xml |
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| SRID | It is a code given by EPSG to each known projection |
The figure bellow shows the main concepts adopted and the relationship between them.
