gmane.comp.gis.openlayers.user

Re: WMS layer not visible...

Raffaele Morelli — 2013-05-24T06:21:57

2013/5/23 Phil Scadden <p.scadden-kmQ5iQIGTM102iOg2JU2CQ< at >public.gmane.org>


Thank you for replying.
Indeed there are no WMS calls in inspector (chrome here) until zoom level
reach the whole world.

I am juggling with GeoExt and started with this example
http://api.geoext.org/1.1/examples/tree.html

I wanted to use EPSG:900913 projection so removed bluemarble and added OSM
layer, suddenly the problem arised. WMS layer data location was correct but
calls were made only at whole world level

I solved by adding the projection and maxEtent properties to map
constructor... neverthless didn't understand why I had to. Any guess on
that?

/r
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Re: WMS layer not visible...

Phil Scadden — 2013-05-23T21:35:58

If you look at the net tab in chrome developer tools or firebug, can you 
see that the  application is generating WMS Get calls? Are they 
generating the correct image?

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Re: WMSgetFeatureInfo ProxyHost

Shadin — 2013-05-23T21:21:07

Finally I figured it out!

I was using the same url for WMS layers and WMSGetFeatureInfo request which
is depending on the client ip, public (external client) or private (internal
client)

that worked with WMS/WFS layers, but turns out that WMSGetFeatureInfo url
should always use the private ip as an internal client. this is what I was
missing here.

Well, I'm not a network guru so I might not explaining it in a correct way.
but hopefully this would help anyone running into the same issue.

Thank you all for your time!



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ensure vector features render forwrapDateLine=true

Ivan Price — 2013-05-23T16:58:42

Hi there,

I'm trying to do something that I can see others have tried to do, but i can't find a working solution.

I have a layer with vector polygons, generated programmatically in the JavaScript. My map is global, in 3857 proj, with dateline wrapping.. hence i would like for the polygons to be represented multiple times when appropriate.

I have tried adding 'mirror' features, i.e. ones where the geometry is shifted right and left by 2*2.003750834E7 meters.. however the new features are rendered on top of the old, despite the fact their geometries are not the same. I have tried defining the map extent to be and extra globe wide on each side.

for e.g.:
            var new_feature1 = feature.clone();
            var new_feature2 = feature.clone();
            new_feature1.geometry.move(20037508.34*2,0);
            extent_layer.addFeatures(new_feature1);
            new_feature2.geometry.move(-20037508.34*2,0);
            extent_layer.addFeatures(new_feature2);
            console.log(new_feature1.geomet

Re: drillDown: multiple requests but only firstin pop-up

Giuseppe De Marco — 2013-05-23T14:52:00

thank you Ian,

I've just fixed this strange behaviour.
The problem was a mapquery layermanager instance; sincerely I don't know how it does the issue but dropping all mapquery code and using only a simplified jquery widget for managing layers, now, everything works great with this configuration:

<code>

$(function(){

    mapControls = {
    line: new OpenLayers.Control.Measure(OpenLayers.Handler.Path, {persist: true}),
    polygon: new OpenLayers.Control.Measure(OpenLayers.Handler.Polygon, {persist: true}),
    pan: new OpenLayers.Control.Pan({title:"Pan"}),
    zoomin: new OpenLayers.Control.ZoomBox({title:"Zoom in box", out: false}),
    zoomout: new OpenLayers.Control.ZoomBox({title:"Zoom out box", out: true}),
        // aggiunti peppelinux
        wmsgetfeatinfo: new OpenLayers.Control.WMSGetFeatureInfo({
                            url: "http://"+ wms_hostname +"/cgi-bin/mapserv?map="+mapfile_path, 
                            title: 'Identify feature

Re: Controling cache size and storage locationfor CacheWrite

Andreas Hocevar — 2013-05-23T14:41:25

There is currently no way to do this from within OpenLayers, but you should
be able to do this on the application level using the same events that
update the number of items in the cache in the cache-write example. Then
turn off the Cache Write control when the storage gets full.

The one thing I don't know is if it is possible at all to get the fill
level of the local storage from the browser. This part would be a question
for a different channel.

Address.
On May 17, 2013 3:48 PM, "Nick Karnik" <nkarnik-iX29Yf8O3ULQT0dZR+AlfA< at >public.gmane.org> wrote:

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Re: drillDown: multiple requests but only firstin pop-up

Ian Turton — 2013-05-23T14:39:14

You need to change the QUERY_LAYERS parameter - that controls the layers
that are queried.

Ian




On 23 May 2013 14:48, Giuseppe De Marco <peppelinux-whZMOeQn8C0< at >public.gmane.org> wrote:

Re: drillDown: multiple requests but only firstin pop-up

Giuseppe De Marco — 2013-05-23T14:23:08

Please see the api docs, this does not work with HTML, you need something like GML as the output format for GetFeatureInfo.



    /**
     * APIProperty: drillDown
     * {Boolean} Drill down over all WMS layers in the map. When
     *     using drillDown mode, hover is not possible, and an infoFormat that
     *     returns parseable features is required. Default is false.
     */


Using infoFormat:"application/vnd.ogc.gml" changes anything.
With drillDown and layers=null I can see 4 request to my proxy but the most frequent popup is on comuni and province layers.

giving layers declaration as, for example: layers: [invasi, corine]
This strategy blocks the getfeatureinfo event on click, in other words it doesn't fires at all.

I'm investigating on this and need help,
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Re: drillDown: multiple requests but only firstin pop-up

Giuseppe De Marco — 2013-05-23T13:48:53

using 

layers: [ corine, invasi, centri, infrastrutture, comuni, province ],


in OpenLayers.Control.WMSGetFeatureInfo and commenting "drillDown" that isn't used with "infoFormat:'text/html'," I can retreive just "comuni" and "province" layers.

The resulting query is this

http://myhostname:8000/proxy/?url=http%3A%2F%2Fmyhostname%2Fcgi-bin%2Fmapserv%3Fmap%3D%2Fmypath%2FMapServer%2Fmapfile_calabria_strati.map%26LAYERS%3DProvince%2CComuni%26QUERY_LAYERS%3DProvince%2CComuni%26STYLES%3D%2C%26SERVICE%3DWMS%26VERSION%3D1.1.1%26REQUEST%3DGetFeatureInfo%26BBOX%3D383042.615536%252C4196768.493%252C861157.384464%252C4444723.795%26FEATURE_COUNT%3D10%26HEIGHT%3D836%26WIDTH%3D1612%26FORMAT%3Dimage%252Fpng%26INFO_FORMAT%3Dtext%252Fhtml%26SRS%3DEPSG%253A32633%26X%3D659%26Y%3D155


I need to include, inside of it, the others layers.
layers declaration isn't exclusively for this purpose ?

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Re: RE Getfeature info without click

2013-05-23T13:09:41

I don't see hover: true in your code...

Have a look at this example
http://openlayers.org/dev/examples/getfeatureinfo-control.html

It expains how to use click and hover
steve




adityakumar529 <adityakumar529-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org>< at >lists.osgeo.org 
Envoyé par : openlayers-users-bounces-qjLDD68F18NyQMAyxoHuMA< at >public.gmane.org
2013-05-23 09:04

A
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Objet
Re: [OpenLayers-Users] RE  Getfeature info without click








HI Steve,
I tried bit could not make it.
Following is the code I am using
 function codeAddress() {
                 geocoder = new google.maps.Geocoder();
                 var address = document.getElementById("address").value;  
                 geocoder.geocode({ 'address': address }, function 
(results, status) {
                     if (status == google.maps.GeocoderStatus.OK){ 
                                 lonlat = results[0].geometry.location; 
                                 //alert(latlong);

Re: RE Getfeature info without click

adityakumar529 — 2013-05-23T13:04:38

HI Steve,
I tried bit could not make it.
Following is the code I am using
 function codeAddress() {
geocoder = new google.maps.Geocoder();
var address = document.getElementById("address").value;    
geocoder.geocode({ 'address': address }, function (results, status) {
    if (status == google.maps.GeocoderStatus.OK){    
lonlat = results[0].geometry.location;    
//alert(latlong);
var roadidPicker = new OpenLayers.Control.WMSGetFeatureInfo({
    url: 'http://localhost:8080/geoserver/aditya/wms',
    title: 'identify features on click',
    queryVisible: true,
});
roadidPicker.infoFormat = 'application/vnd.ogc.gml';
roadidPicker.events.register("getfeatureinfo", this, pickRoadid);
map.addControl(roadidPicker);
roadidPicker.activate();
//map.setCenter(lonlat, 5);
var lat = results[0].geometry.location.lat();
alert(lat);
var lng = results[0].geometry.location.lng();
alert(lng);
vectorLayer.removeAllFeatures();
var proj = new OpenLayers.Projection("EPSG:4326");
var

RE Getfeature info without click

2013-05-23T12:48:40

See hover properties, set to true
http://dev.openlayers.org/docs/files/OpenLayers/Control/WMSGetFeatureInfo-js.html





adityakumar529 <adityakumar529-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org>< at >lists.osgeo.org 
Envoyé par : openlayers-users-bounces-qjLDD68F18NyQMAyxoHuMA< at >public.gmane.org
2013-05-23 08:23

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Objet
[OpenLayers-Users] Getfeature info without click








Dear User,
    I am using having a GIS layer with base layer as google maps.I am 
using
Geocoding technique to search on Google maps.Now when I perform the
geocoding options the marker comes on the map, at this same time I want 
the
info of the wms layer also. But the default functionality of the
getfeatureinfo just allow me the info after click event.


How to make the same functionality without click event.



Aditya Kumar
India Urban Space Foundation




-----
GIS Developer
India Urban Space Foundation
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Getfeature info without click

adityakumar529 — 2013-05-23T12:23:23

Dear User,
    I am using having a GIS layer with base layer as google maps.I am using
Geocoding technique to search on Google maps.Now when I perform the
geocoding options the marker comes on the map, at this same time I want the
info of the wms layer also. But the default functionality of the
getfeatureinfo just allow me the info after click event.


How to make the same functionality without click event.



Aditya Kumar
India Urban Space Foundation




-----
GIS Developer
India Urban Space Foundation
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WMS layer not visible...

Raffaele Morelli — 2013-05-23T06:57:15

Hi,

can somebody explain why a WMS layer is visible only when I zoom out to
world extent? I am using OSM as base layer.
If I switch to bluemarble base layer everything is fine...

Regards
/r
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Re: drillDown: multiple requests but only firstin pop-up

Giuseppe De Marco — 2013-05-22T22:20:55

Thank you,
so the only method for querying all the visible layers is declaring [ layer1, layer2, layer3 ] in layers attribute of getfeatureinfo ?


________________________________
 Da: Bart van den Eijnden <bartvde< at >opengeo.org>
A: Giuseppe De Marco <peppelinux-whZMOeQn8C0< at >public.gmane.org> 
Cc: "openlayers-users-qjLDD68F18NyQMAyxoHuMA< at >public.gmane.org" <openlayers-users-qjLDD68F18NyQMAyxoHuMA< at >public.gmane.org> 
Inviato: Mercoledì 22 Maggio 2013 19:55
Oggetto: Re: [OpenLayers-Users] drillDown: multiple requests but only first in pop-up
 


Please see the api docs, this does not work with HTML, you need something like GML as the output format for GetFeatureInfo.

    /**
     * APIProperty: drillDown
     * {Boolean} Drill down over all WMS layers in the map. When
     *     using drillDown mode, hover is not possible, and an infoFormat that
     *     returns parseable features is required. Default is false.
     */

Best regards,
Bart

-- 
Bart van den Eijnden
OpenGeo - http://openge

Re: WMSgetFeatureInfo ProxyHost

Phil Scadden — 2013-05-22T21:37:12

Well unless you have explicitly put a 503 (unlikely) into your proxy 
code, i would say that is not a configuration issue in your proxy. I'd 
start looking at the code around where your proxy opens a connection to 
the real URL.

I am assuming you dont have a way attach a debugger to the proxy. Unless 
you do, this is going to be a lot easier to sort out if start adding 
some logging capability to the proxy and see where its problems lie.  It 
is starting to sound like a firewall rule.


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Re: drillDown: multiple requests but only firstin pop-up

Bart van den Eijnden — 2013-05-22T17:55:26

Please see the api docs, this does not work with HTML, you need something like GML as the output format for GetFeatureInfo.

    /**
     * APIProperty: drillDown
     * {Boolean} Drill down over all WMS layers in the map. When
     *     using drillDown mode, hover is not possible, and an infoFormat that
     *     returns parseable features is required. Default is false.
     */

Best regards,
Bart

drillDown: multiple requests but only first inpop-up

Giuseppe De Marco — 2013-05-22T15:57:13

Using ol 2.12 with different layers configured in three different mapfiles on the same mapserver 6.x, Ubuntu 12.04.

<feature info>

new OpenLayers.Control.WMSGetFeatureInfo({
                            url: "http://"+ wms_hostname +"/cgi-bin/mapserv?map="+mapfile_path, 
                            title: 'Identify features by clicking',
                            drillDown: true,
                            infoFormat:'text/html',
                            click: 'true',

                            queryVisible: true,
                            eventListeners: {
                                getfeatureinfo: function(event) {
                                    map.addPopup(new OpenLayers.Popup.FramedCloud(
                                        "chicken", 
                                        map.getLonLatFromPixel(event.xy)

EPSG:4326 WMS map aspect ratio

Smart, Gary — 2013-05-22T13:59:22

I really would like to display the contents of my local WMS in a form
which the users are used to (i.e. square OS grids, rather than the
'squashed' appearance which comes from mapping the EPSG:4326 onto a
flat-Earth projection in high latitudes).  I have found numerous
examples of' how to resolve this problem', but none seem to have any
effect on the distortion OR they result in no map being displayed at
all.  I cannot connect directly to map servers on the web (spherical
Mercator), because my system is an isolated network and the maps are
supplied by the customer.

 

Salient extracts from the js code follow:

        var map, options = { 
                             projection: new
OpenLayers.Projection('EPSG:4326'), 
                             //displayProjection: new
OpenLayers.Projection('EPSG:3574'),
                             //units: 'm',
                             //maxResolution: 156543.0339,
                             //maxExtent: new
OpenLayers.Bounds(-20037508, -20037508, 20037508, 2003

Two colored Line

Sven Kaden — 2013-05-22T11:18:11

Hello, 

I would like to draw a polyline out of existing GPS Points. That works good.
But it should be a two colored line like in the image. 
<http://osgeo-org.1560.x6.nabble.com/file/n5054882/twoColorLine.png> 

I tried to solve this issue by using the fillColor attribute in the StyleMap
like this.
var template = {
        strokeWidth: "${getSize}", // using context.getSize(feature)
strokeColor: "#00ff00", // using context.getColor(feature)
strokeOpacity: "0.4",
fillColor: "#000000",
fillOpacity: 1
};

But it doesn't work. Is it possible to use an image instead of the stroke
color? Or are there other options?

Thank you

Sven Kaden



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Re: WMSgetFeatureInfo ProxyHost

Gery . — 2013-05-22T07:57:28

the problem with linux boxes such as rhel, ubuntu, I think also centos, is that most of the time new python versions have to be installed, however many applications (such as yum in rhel) depends on the original version (for rhel5 is the good and old one 2.4). In my case I had to install the RPM python 2.6 version but nothing worked correctly (ie. with the 2.6) until I replaced the "python" file located in /usr/bin with the new python2.6. I think ubuntu behaves more or less the same way as rhel and centos, so try:

which python
python -V

I think with that output it'd be easier to see if python is the cause of the problems you're facing. If so, you need to make an alias or just replace the "python" file in /usr/bin with your new python vesion:

rm python
cp python2.7 python

I think you installed recently the 2.7, btw why do you need this version? this may solve your issues.


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