The ClearVectorRecords method clears all the defined vector records for a given ENVIVector from an ROI.
Example
e = ENVI()
file = Filepath('qb_boulder_msi_vectors.shp', ROOT_DIR=e.Root_Dir, $
SUBDIRECTORY=['data'])
shape = IDLffShape(file)
attributes = shape.GetAttributes(/ALL)
Obj_Destroy, shape
records = WHERE(attributes.(1) EQ 'water')
vector = e.OpenVector(file)
roi = EnviRoi(NAME='Water', COLOR="Dark Blue")
roi.AddVectorRecords, vector, records
file = Filepath('qb_boulder_pan', ROOT_DIR=e.Root_Dir, $
SUBDIRECTORY=['data'])
raster = e.OpenRaster(file)
view = e.GetView()
layer = view.CreateLayer(raster)
view.Zoom, /FULL_EXTENT
vectorLayer = view.CreateLayer(vector)
roiLayer = layer.AddRoi(roi)
roi.ClearVectorRecords, vector
Syntax
ENVIROI.ClearVectorRecords, Vector [, ERROR=variable]
Arguments
Vector
The ENVIVector reference that contains the geometry records to remove.
Keywords
ERROR
Set this keyword to a named variable that will contain any error message issued during execution of this routine. If no error occurs, the ERROR variable will be set to a null string (''). If an error occurs and the routine is a function, then the function result will be undefined.When this keyword is not set and an error occurs, ENVI returns to the caller and execution halts. In this case, the error message is contained within !ERROR_STATE and can be caught using IDL's CATCH routine. See IDL Help for more information on !ERROR_STATE and CATCH.See Manage Errors for more information on error handling in ENVI programming.
Version History
API Version
4.3
See Also
ENVIROI, ENVIROI::AddVectorRecords, ENVIVector