Geoportal Extension for OpenLayers API Reference

Class: ElevationPath

ol.control.ElevationPath

Elevation Path Control. Allows users to draw a path on a Openlayers map see the elevation profile computed with geoportal elevation path web service along that path.

new ElevationPath(options)

OpenLayers/Controls/ElevationPath.js, line 99
Name Type Description
options Object

options for function call.

Name Type Default Description
apiKey String optional

API key for services call (isocurve and autocomplete services), mandatory if autoconf service has not been charged in advance
active Boolean false optional

specify if control should be actived at startup. Default is false.
ssl Boolean true optional

use of ssl or not (default true, service requested using https protocol)
export Boolean false optional

Specify if button "Export" is displayed
elevationPathOptions Object {} optional

elevation path service options. See Gp.Services.getAltitude() for available options
layerDescription Object {} optional

Layer informations to be displayed in LayerSwitcher widget (only if a LayerSwitcher is also added to the map)

Name Type Default Description
title String "Profil altimétrique" optional

Layer title to be displayed in LayerSwitcher
description String "Mon profil altimétrique" optional

Layer description to be displayed in LayerSwitcher
stylesOptions Object optional

styles management

Name Type Default Description
marker Object {} optional

styles management of marker displayed on map when the user follows the elevation path. Specified with an ol.style.Image subclass object
draw Object {} optional

styles used when drawing. Specified with following properties.

Name Type Default Description
pointer Object {} optional

Style for mouse pointer when drawing the line. Specified with an ol.style.Image subclass object.
start Object {} optional

Line Style when drawing. Specified with an ol.style.Stroke object.
finish Object {} optional

Line Style when finished drawing. Specified with an ol.style.Stroke object.
displayProfileOptions Object {} optional

profile options.

Name Type Default Description
totalDistance Boolean true optional

display the total distance of the path
greaterSlope Boolean true optional

display the greater slope into the graph
meanSlope Boolean true optional

display the mean slope into the graph
ascendingElevation Boolean true optional

display the ascending elevation into the graph
descendingElevation Boolean true optional

display the descending elevation into the graph
currentSlope Boolean true optional

display current slope value on profile mouseover
apply function optional

function to display profile if you want to cutomise it. By default, (DISPLAY_PROFILE_BY_DEFAULT()) is used. Helper functions to use with D3 (DISPLAY_PROFILE_LIB_D3()) or AmCharts (DISPLAY_PROFILE_LIB_AMCHARTS()) frameworks are also provided. You may also provide your own function.
target Object optional

DOM container to use to display the profile.
Fires:
  • elevationpath:drawstart
  • elevationpath:drawend
  • elevationpath:compute
  • export:compute
Example
var measure = new ol.control.ElevationPath({
   export : false,
   stylesOptions : {
    draw : {
      finish : new ol.style.Stroke({
           color : "rgba(0, 0, 0, 0.5)",
           width : 2
      })
    },
   }
   displayProfileOptions : {
      apply : ol.control.ElevationPath.DISPLAY_PROFILE_RAW,
   }
});

Exemples :
- displayProfileOptions.apply : null
- displayProfileOptions.apply : function (elevations, container, context) {  // do some stuff... }
- displayProfileOptions.apply : ol.control.ElevationPath.DISPLAY_PROFILE_{LIB_AMCHARTS | LIB_D3 | RAW}

Extends

  • ol.control.Control

Members

staticol.control.ElevationPath.DEFAULT_STYLES

Styles applied by default if stylesOptions property is not set.

Methods

staticDISPLAY_PROFILE_BY_DEFAULT(data, container, context)

OpenLayers/Controls/ElevationPath.js, line 395

Display Profile function used by default : no additonal framework needed.

Name Type Description
data Object

elevations values for profile
container HTMLElement

html container where to display profile
context Object

this control object

staticDISPLAY_PROFILE_LIB_AMCHARTS(data, container, context)

OpenLayers/Controls/ElevationPath.js, line 332

display Profile using Amcharts framework. This method needs AmCharts libraries to be loaded.

Name Type Description
data Object

collection elevations
container HTMLElement

container
context Object

this control object

staticDISPLAY_PROFILE_LIB_D3(data, container, context)

OpenLayers/Controls/ElevationPath.js, line 355

display Profile using D3 javascript framework. This method needs D3 libraries to be loaded.

Name Type Description
data Object

elevations values for profile
container HTMLElement

html container where to display profile
context Object

this control object

staticDISPLAY_PROFILE_RAW(data, container, context)

OpenLayers/Controls/ElevationPath.js, line 378

display Profile without graphical rendering (raw service response)

Name Type Description
data Object

elevations values for profile
container HTMLElement

html container where to display profile
context Object

this control object

clean()

OpenLayers/Controls/ElevationPath.js, line 618

clean

getActive(){Boolean}

OpenLayers/Controls/ElevationPath.js, line 559

Returns true if widget is actived (drawing),
false otherwise

Returns:
- true or false

getContainer(){DOMElement}

OpenLayers/Controls/ElevationPath.js, line 602

Get container

getData(){Object}

OpenLayers/Controls/ElevationPath.js, line 593

Get elevation data

Returns:
- elevations
Example
{
       greaterSlope // pente max
       meanSlope  // pente moyenne
       distancePlus // distance cumulée positive
       distanceMinus // distance cumulée négative
       ascendingElevation // dénivelé cumulée positive
       descendingElevation // dénivelé cumulée négative
       altMin // altitude min
       altMax // altitude max
       distance // distance totale
       unit : // unité des mesures de distance
       points : // elevations
  }

getLayer(){ol.layer.Vector}

OpenLayers/Controls/ElevationPath.js, line 611

Get layer

setActive(active)

OpenLayers/Controls/ElevationPath.js, line 569

Actived widget drawing or not

Name Type Description
active Boolean

true / false

setMap(map)

OpenLayers/Controls/ElevationPath.js, line 513

Attach control to map. Overloaded ol.control.Control.setMap() method.

Name Type Description
map ol.Map

Map.