Oracle GeoRaster

SIS can read in Oracle GeoRaster data from 10g and later versions of Oracle. GeoRaster is Oracle’s storage format for storing raster and grid data within the Oracle database. Once connected to the data source, SIS allows configuration of Bands, Colour model, Stretching and Resampling to further enhance the visualisation of the raster data.

The maximum size of a GeoRaster dataset that can be read into SIS is 200MB. If the file size is greater than 200MB a solution is to create a pyramid over the mosaic. This enables the "Dynamic" connection option, allowing the data to be queried at the most appropriate resolution for the current screen resolution and extents.

Arguments to CreateDataSourceOverlay API Method

• clsDataSource$
  
  • OracleGeoRasterDataset

• params$
  

[Connectiontype="dynamic"|"import"|"local"]
[Connection=username/password@service]
[Georasteridcolumn]
[Georastertable]
[Georastercolumn]
[Owner]
[Rasterid]
[Rdttable]
[Showerrors="true"|"false"]

[Forcegrid="true"|"false"] - this is optional and dependent on type of data.

To add an Oracle GeoRaster overlay in dynamic mode, you must add the forcegrid:false parameter.

Compatibility:

• Cadcorp SIS Map Modeller
• Cadcorp SIS Map Editor
• Cadcorp SIS Map Manager
• Cadcorp SIS Map Express
• Cadcorp SIS ActiveX Modeller
• Cadcorp SIS ActiveX Manager
• Cadcorp SIS ActiveX Viewer
• Cadcorp GeognoSIS

See full list of Dataset Formats

Send comments on this topic.

Click to return to www.cadcorp.com

© Copyright 2000-2017 Computer Aided Development Corporation Limited (Cadcorp).