Gets a Blob string of the current open Item, within a Coordinate Reference System.
Visual Basic |
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Public Function GetBlobB( _ ByVal projection As String, _ ByVal fmt As Integer, _ ByVal precision As Integer _ ) As Variant |
SIS_BLOB_SIS_V6_ASCII | 0 = Cadcorp SIS format. |
SIS_BLOB_OGIS_WKB | 1 = OGC Well-Known-Binary format |
SIS_BLOB_OGIS_WKT | 2 = OGC Well-Known-Text format |
SIS_BLOB_OGIS_GML | 3 = OGC Geographic Markup Language |
SIS_BLOB_ESRI_SHP | 4 = ESRI Shape (*.shp) |
SIS_BLOB_SIS_BIN_ITEM | 5 = Binary item |
SIS_BLOB_GEOJSON | 6 = Geographic Objects for JSON format |
This parameter is ignored and will always return 64-bit precision.
A Variant containing an array of bytes that describe the current open Item in the chosen format.
There is no limit on the length of Blob data arrays generated by SIS. There are however limits elsewhere: SIS datasets which read Blobs from data sources can use a fixed size communication buffer (use Cadcorp View Geometry Maximum Blob size properties to change the size of the communication buffer).
Available: GEO OD
Group:
sis.GetBlobB ( "*APrjNatGrid", 0, 0 )
Returns the Blob data of the current item within the National Grid coordinate reference system.
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