How to change styles of selected clusters on zoom in OL 4.6?
I have a map with a vector layer and a cluster source. I choosed to display the clusters as circles with the number of features written inside. In case the cluster contains only one feature, it displays as a custom icon. If the zoom is too important, I set the distance between clusters at 0, to cancel the clusterization (I'm aware each feature is still considered as a cluster). I also have a select interaction with a custom fonction (Kadricarto.selectEquipementStyle) to change the style. The interaction works well and the clusters selected are displayed with the right style.
However, if I zoom in or out, the selected clusters are still displayed in the initial zoom of the selection, with their initial style.
Is there an easy way to dynamically re-style the selected clusters at each zoom level without dispatching a new select event ?
I stumbled upon this link (http://jorix.github.io/OL-FeaturePopups/examples/feature-popups.html) which produces the kind of behavior I want, but it's for OL2...
This is my code:
vectorEquipementSource = new ol.source.Vector();
clusterEquipementSource = new ol.source.Cluster(
source: vectorEquipementSource,
distance: constante.DistanceCluster
);
vectorLayerEquipement = new ol.layer.Vector(
source: clusterEquipementSource,
style: vectorEquipementStyle,
maxResolution: seuilVueCarto,
minResolution: minRes,
extent: maxextent,
visible: false
);
selectEquipementStyle = function (feat, iscluster)
var size = 1;
var reg = "";
if (iscluster)
var features = feat.get('features');
size = features.length;
if (size > 1)
// draw circles
else
reg = features[0].get("Registre");
else
reg = feat.get("Registre");
if (size === 1)
style = styleSelectEquipement[reg];
return style;
;
getSelectStyle = function (selected)
var type = "";
var iscluster = isCluster(selected);
if (iscluster)
type = getTypeObjet(selected.get("features")[0]);
else
type = getTypeObjet(selected);
if (type === "Equipement")
return selectEquipementStyle(selected, iscluster);
return null;
selectInteraction = new ol.interaction.Select(
layers: [vectorLayerEquipement],
hitTolerance: 4,
style: getSelectStyle
);
map.getView().on('change:resolution', function (evt)
var view = evt.target;
if (view.getZoom() >= constante.NvZoomFeature)
clusterEquipementSource.setDistance(0);
else if (view.getZoom() < constante.NvZoomFeature)
clusterEquipementSource.setDistance(constante.DistanceCluster);
//Dispatch a select event with the clusters from clusterEquipementSource containing the previously selected clusters ?
, map);
Thanks for your time.
javascript openlayers
add a comment |
I have a map with a vector layer and a cluster source. I choosed to display the clusters as circles with the number of features written inside. In case the cluster contains only one feature, it displays as a custom icon. If the zoom is too important, I set the distance between clusters at 0, to cancel the clusterization (I'm aware each feature is still considered as a cluster). I also have a select interaction with a custom fonction (Kadricarto.selectEquipementStyle) to change the style. The interaction works well and the clusters selected are displayed with the right style.
However, if I zoom in or out, the selected clusters are still displayed in the initial zoom of the selection, with their initial style.
Is there an easy way to dynamically re-style the selected clusters at each zoom level without dispatching a new select event ?
I stumbled upon this link (http://jorix.github.io/OL-FeaturePopups/examples/feature-popups.html) which produces the kind of behavior I want, but it's for OL2...
This is my code:
vectorEquipementSource = new ol.source.Vector();
clusterEquipementSource = new ol.source.Cluster(
source: vectorEquipementSource,
distance: constante.DistanceCluster
);
vectorLayerEquipement = new ol.layer.Vector(
source: clusterEquipementSource,
style: vectorEquipementStyle,
maxResolution: seuilVueCarto,
minResolution: minRes,
extent: maxextent,
visible: false
);
selectEquipementStyle = function (feat, iscluster)
var size = 1;
var reg = "";
if (iscluster)
var features = feat.get('features');
size = features.length;
if (size > 1)
// draw circles
else
reg = features[0].get("Registre");
else
reg = feat.get("Registre");
if (size === 1)
style = styleSelectEquipement[reg];
return style;
;
getSelectStyle = function (selected)
var type = "";
var iscluster = isCluster(selected);
if (iscluster)
type = getTypeObjet(selected.get("features")[0]);
else
type = getTypeObjet(selected);
if (type === "Equipement")
return selectEquipementStyle(selected, iscluster);
return null;
selectInteraction = new ol.interaction.Select(
layers: [vectorLayerEquipement],
hitTolerance: 4,
style: getSelectStyle
);
map.getView().on('change:resolution', function (evt)
var view = evt.target;
if (view.getZoom() >= constante.NvZoomFeature)
clusterEquipementSource.setDistance(0);
else if (view.getZoom() < constante.NvZoomFeature)
clusterEquipementSource.setDistance(constante.DistanceCluster);
//Dispatch a select event with the clusters from clusterEquipementSource containing the previously selected clusters ?
, map);
Thanks for your time.
javascript openlayers
Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48
add a comment |
I have a map with a vector layer and a cluster source. I choosed to display the clusters as circles with the number of features written inside. In case the cluster contains only one feature, it displays as a custom icon. If the zoom is too important, I set the distance between clusters at 0, to cancel the clusterization (I'm aware each feature is still considered as a cluster). I also have a select interaction with a custom fonction (Kadricarto.selectEquipementStyle) to change the style. The interaction works well and the clusters selected are displayed with the right style.
However, if I zoom in or out, the selected clusters are still displayed in the initial zoom of the selection, with their initial style.
Is there an easy way to dynamically re-style the selected clusters at each zoom level without dispatching a new select event ?
I stumbled upon this link (http://jorix.github.io/OL-FeaturePopups/examples/feature-popups.html) which produces the kind of behavior I want, but it's for OL2...
This is my code:
vectorEquipementSource = new ol.source.Vector();
clusterEquipementSource = new ol.source.Cluster(
source: vectorEquipementSource,
distance: constante.DistanceCluster
);
vectorLayerEquipement = new ol.layer.Vector(
source: clusterEquipementSource,
style: vectorEquipementStyle,
maxResolution: seuilVueCarto,
minResolution: minRes,
extent: maxextent,
visible: false
);
selectEquipementStyle = function (feat, iscluster)
var size = 1;
var reg = "";
if (iscluster)
var features = feat.get('features');
size = features.length;
if (size > 1)
// draw circles
else
reg = features[0].get("Registre");
else
reg = feat.get("Registre");
if (size === 1)
style = styleSelectEquipement[reg];
return style;
;
getSelectStyle = function (selected)
var type = "";
var iscluster = isCluster(selected);
if (iscluster)
type = getTypeObjet(selected.get("features")[0]);
else
type = getTypeObjet(selected);
if (type === "Equipement")
return selectEquipementStyle(selected, iscluster);
return null;
selectInteraction = new ol.interaction.Select(
layers: [vectorLayerEquipement],
hitTolerance: 4,
style: getSelectStyle
);
map.getView().on('change:resolution', function (evt)
var view = evt.target;
if (view.getZoom() >= constante.NvZoomFeature)
clusterEquipementSource.setDistance(0);
else if (view.getZoom() < constante.NvZoomFeature)
clusterEquipementSource.setDistance(constante.DistanceCluster);
//Dispatch a select event with the clusters from clusterEquipementSource containing the previously selected clusters ?
, map);
Thanks for your time.
javascript openlayers
I have a map with a vector layer and a cluster source. I choosed to display the clusters as circles with the number of features written inside. In case the cluster contains only one feature, it displays as a custom icon. If the zoom is too important, I set the distance between clusters at 0, to cancel the clusterization (I'm aware each feature is still considered as a cluster). I also have a select interaction with a custom fonction (Kadricarto.selectEquipementStyle) to change the style. The interaction works well and the clusters selected are displayed with the right style.
However, if I zoom in or out, the selected clusters are still displayed in the initial zoom of the selection, with their initial style.
Is there an easy way to dynamically re-style the selected clusters at each zoom level without dispatching a new select event ?
I stumbled upon this link (http://jorix.github.io/OL-FeaturePopups/examples/feature-popups.html) which produces the kind of behavior I want, but it's for OL2...
This is my code:
vectorEquipementSource = new ol.source.Vector();
clusterEquipementSource = new ol.source.Cluster(
source: vectorEquipementSource,
distance: constante.DistanceCluster
);
vectorLayerEquipement = new ol.layer.Vector(
source: clusterEquipementSource,
style: vectorEquipementStyle,
maxResolution: seuilVueCarto,
minResolution: minRes,
extent: maxextent,
visible: false
);
selectEquipementStyle = function (feat, iscluster)
var size = 1;
var reg = "";
if (iscluster)
var features = feat.get('features');
size = features.length;
if (size > 1)
// draw circles
else
reg = features[0].get("Registre");
else
reg = feat.get("Registre");
if (size === 1)
style = styleSelectEquipement[reg];
return style;
;
getSelectStyle = function (selected)
var type = "";
var iscluster = isCluster(selected);
if (iscluster)
type = getTypeObjet(selected.get("features")[0]);
else
type = getTypeObjet(selected);
if (type === "Equipement")
return selectEquipementStyle(selected, iscluster);
return null;
selectInteraction = new ol.interaction.Select(
layers: [vectorLayerEquipement],
hitTolerance: 4,
style: getSelectStyle
);
map.getView().on('change:resolution', function (evt)
var view = evt.target;
if (view.getZoom() >= constante.NvZoomFeature)
clusterEquipementSource.setDistance(0);
else if (view.getZoom() < constante.NvZoomFeature)
clusterEquipementSource.setDistance(constante.DistanceCluster);
//Dispatch a select event with the clusters from clusterEquipementSource containing the previously selected clusters ?
, map);
Thanks for your time.
javascript openlayers
javascript openlayers
asked Nov 13 '18 at 10:11
AConcernedCitizenAConcernedCitizen
62
62
Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48
add a comment |
Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48
Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48
Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48
add a comment |
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Clusters aren't real features, they are dynamically created by OpenLayers. When you change the zoom or distance OpenLayers will build a new set of clusters and destroy the previous ones, including any which were selected. It looks like the OL2 add-on works by creating a new "safeSelection" layer, containing single real unselected features styled to look like a selected cluster. That same could be done in later versions of OL, but there's no easy way to simply restyle.
– Mike
Nov 13 '18 at 11:48