ENVIAnnotationLayer

This is a reference to an annotation layer object. Use ENVIView::CreateLayer to create a new annotation object.

Example

; Start the application

e = ENVI()

; Open an input file

file = FILEPATH('qb_boulder_msi', $

  ROOT_DIR=e.ROOT_DIR, SUBDIRECTORY = ['data'])

raster = e.OpenRaster(file)

; Display the raster layer

View = e.GetView()

RasterLayer = View.CreateLayer(raster)

; Create an annotation set using Geographic Lat/Lon

; WGS-84 as the spatial reference

annotation = ENVIAnnotationSet(/GEOGRAPHIC)

; Label the community park

annotation.AddCircle, $

  -105.22101050, 39.9917, $ ; X and Y coordinates

  [300.0, 200.0], $ ; ellipse axes (m)

  LINE_COLOR='lime green', NAME='Park polygon'

annotation.AddText, $

  -105.22118409, 39.99424191, $ ; X and Y coordinates

  'East Boulder!C Community Park', $

  GLYPH_COLOR='lime green', NAME='Park label'

; Label the reservoir

annotation.AddText, $

  -105.20407487, 39.99911740, $ ; X and Y coordinates

  'Baseline!C Reservoir', $

  GLYPH_COLOR='light sky blue', $

  NAME='Reservoir label'

; Save the annotation set

outFile = e.GetTemporaryFilename()

annotation.Save, outFile

; Display the annotation layer

AnnLayer = View.CreateLayer(annotation)

This function returns a reference to an ENVIAnnotationLayer object.

The ENVIAnnotationSet contained by the annotation layer.

Set this property to 1 to hide the layer, and to 0 to display it. The default value is 0.

Specify a floating-point value between 0 (opaque) and 100 (invisible) that defines the transparency of the layer. The default value is 0.

The ENVIView where the annotation layer resides.

ENVI 5.6.1

Introduced