Namespace: ext

Classes

Ajax

SVGFilter

SVGOperation

Worker

Namespaces

element

imageLoader

input

Methods

---

<static> getElevationFromPixel(pixel)

Convert pixel (terrain-RGB) to elevation

Parameters:

Name	Type	Description
pixel	Array.<number>	the pixel value

See:

• ol.ext.getPixelFromElevation

Returns:

elevation

Type

number

---

<static> getMapCanvas(map)

Get a canvas overlay for a map (non rotated, on top of the map)

Parameters:

Name	Type	Description
map	ol.Map

Returns:

Type

canvas

---

<static> getPixelFromElevation(height)

Convert elevation to pixel as terrain-RGB Encode elevation data in raster tiles

• max deep watter trench min > -12000 m
• 2 digits (0.01 m)

Parameters:

Name	Type	Description
height	number	elevation

Returns:

pixel value

Type

Array.<number>

---

<static> getVectorContextStyle(e, s)

Get style to use in a VectorContext

Parameters:

Name	Type	Description
e
s	ol.style.Style

Returns:

Type

ol.style.Style

---

<static> TextStreamReader(options)

Text file reader (chunk by chunk, line by line). Large files are read in chunks and returned line by line to handle read progress and prevent memory leaks.

Parameters:

Name	Type	Description
options	Object	Properties Name Type Argument Default Description file File <optional> chunkSize number <optional> 1E6