[OpenLayers-Users] R: Users Digest, Vol 78, Issue 23
francesca bader
pitotola1 at yahoo.it
Thu Mar 7 07:24:54 PST 2013
My re-reply to message 1 "mosaic layer not displayng" below Phil Scadden message:
--- Mer 6/3/13, openlayers-users-request at lists.osgeo.org <openlayers-users-request at lists.osgeo.org> ha scritto:
Da: openlayers-users-request at lists.osgeo.org <openlayers-users-request at lists.osgeo.org>
Oggetto: Users Digest, Vol 78, Issue 23
A: openlayers-users at lists.osgeo.org
Data: Mercoledì 6 marzo 2013, 22:48
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Today's Topics:
1. Re: mosaic layer not displayng (Phil Scadden)
2. Re: Conversion of BBox for GetFeature Request (Jerome A. Wendell)
3. Re: Conversion of BBox for GetFeature Request (Gery .)
----------------------------------------------------------------------
Message: 1
Date: Thu, 07 Mar 2013 09:02:55 +1300
From: Phil Scadden <p.scadden at gns.cri.nz>
To: openlayers-users at lists.osgeo.org
Subject: Re: [OpenLayers-Users] mosaic layer not displayng
Message-ID: <5137A0EF.9090003 at gns.cri.nz>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
On the geoserver layer preview, do a view source and compare with your
code. You might be able to track down the issue by taking this code and
gradually adding your bits. I would put my money on an issue with a
disconnect between the mozaic EPSG and you the EPSG that you are using
on your map. The image mozaic does not reproject on the fly so you must
use the same EPGS on your map.
Hi Phil,
I've already tried to compare two codes, but without be able to integrate them in a working map. I'm quite beginner. I think you guessed with EPSG problem, I tried to put the imagemosaic layer in a map with the same layer's EPSG and now I can see my layer!
I understood that tiles inside imagemosaic must have same EPSG, but I didn't know that it doesn't support the reprojection on the fly.
I'll try to fit my code. Many thanks!! Bye bye.
Francesca
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------------------------------
Message: 2
Date: Wed, 6 Mar 2013 16:38:29 -0500
From: "Jerome A. Wendell" <jawendell at digitalmapping.com>
To: <jawendell at digitalmapping.com>, "'Gery .'" <gamejihou at hotmail.com>
Cc: 'OpenLayers User List' <openlayers-users at lists.osgeo.org>
Subject: Re: [OpenLayers-Users] Conversion of BBox for GetFeature
Request
Message-ID: <009e01ce1ab2$f65ffdf0$e31ff9d0$@com>
Content-Type: text/plain; charset="utf-8"
I was having a difficult time getting the code to work for a box selection, so I decided to set it up for selection on click. The click selection actually works better for my particular situation. The control is now returning features, but there seems to be a problem with adding them to the highlight layer. The code that I am using is below:
var highlightLayer = new OpenLayers.Layer.Vector("Highlighted Features", {
styleMap: myStyles,
displayInLayerSwitcher: false,
isBaseLayer: false
}
);
OpenLayers.Control.myGetFeature = OpenLayers.Class(OpenLayers.Control.GetFeature,{
selectClick: function(evt){
var layerSRSgeo = new OpenLayers.Projection('EPSG:4326');
var baseSRSmer = new OpenLayers.Projection('EPSG:900913');
var bounds = this.pixelToBounds(evt.xy).transform(baseSRSmer,layerSRSgeo);
this.request(bounds, {single: this.single});
},
CLASS_NAME: 'OpenLayers.Control.myGetFeature'
});
var myControl = new OpenLayers.Control.myGetFeature({
protocol: OpenLayers.Protocol.WFS.fromWMSLayer(mylayer),
box: false,
hover: false,
maxFeatures: 40,
clickTolerance: 1
});
myControl.events.register("featureselected", this, function(e) {
highlightLayer.addFeatures(e.features);
});
myControl.events.register("featureunselected", this, function(e) {
highlightLayer.removeFeatures(e.features);
});
map.addControl(myControl);
myControl.activate();
The error that I now get is below:
I have been working on troubleshooting this issue for quite a while and have been searching for an answer. So far I have been unsuccessful in getting the selected features added to the highlight layer.
Any suggestions that you might have are greatly appreciated.
Thanks.
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Message: 3
Date: Wed, 6 Mar 2013 22:48:02 +0100
From: "Gery ." <gamejihou at hotmail.com>
To: "<jawendell at digitalmapping.com>" <jawendell at digitalmapping.com>
Cc: OpenLayers User List <openlayers-users at lists.osgeo.org>
Subject: Re: [OpenLayers-Users] Conversion of BBox for GetFeature
Request
Message-ID: <DUB406-EAS18910474EFF529780E4A153B0E40 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"
Hi Jerome,
Not sure here, but seems to me that the problem is the events.register, try this to see what is going on there:
myControl.events.register("featureselected", this, function(e) {
highlightLayer.addFeatures(e.features);
console.log("THIS HAS BEEN ADDED: " + e.features);
});
myControl.events.register("featureunselected", this, function(e) {
highlightLayer.removeFeatures(e.features);
console.log("THIS HAS BEEN DELETED: " + e.features);
Try some variants inside the parentheses of each console.log call.
Sent from my iBath
On Mar 6, 2013, at 22:38, "Jerome A. Wendell" <jawendell at digitalmapping.com> wrote:
I was having a difficult time getting the code to work for a box selection, so I decided to set it up for selection on click. The click selection actually works better for my particular situation. The control is now returning features, but there seems to be a problem with adding them to the highlight layer. The code that I am using is below:
var highlightLayer = new OpenLayers.Layer.Vector("Highlighted Features", {
styleMap: myStyles,
displayInLayerSwitcher: false,
isBaseLayer: false
}
);
OpenLayers.Control.myGetFeature = OpenLayers.Class(OpenLayers.Control.GetFeature,{
selectClick: function(evt){
var layerSRSgeo = new OpenLayers.Projection('EPSG:4326');
var baseSRSmer = new OpenLayers.Projection('EPSG:900913');
var bounds = this.pixelToBounds(evt.xy).transform(baseSRSmer,layerSRSgeo);
this.request(bounds, {single: this.single});
},
CLASS_NAME: 'OpenLayers.Control.myGetFeature'
});
var myControl = new OpenLayers.Control.myGetFeature({
protocol: OpenLayers.Protocol.WFS.fromWMSLayer(mylayer),
box: false,
hover: false,
maxFeatures: 40,
clickTolerance: 1
});
myControl.events.register("featureselected", this, function(e) {
highlightLayer.addFeatures(e.features);
});
myControl.events.register("featureunselected", this, function(e) {
highlightLayer.removeFeatures(e.features);
});
map.addControl(myControl);
myControl.activate();
The error that I now get is below:
<image001.png>
I have been working on troubleshooting this issue for quite a while and have been searching for an answer. So far I have been unsuccessful in getting the selected features added to the highlight layer.
Any suggestions that you might have are greatly appreciated.
Thanks.
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