R: Re: Re: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
francescoboccacci at libero.it
francescoboccacci at libero.it
Thu Feb 16 10:48:41 EST 2012
Can you suggest me some application for that purpose?
Thanks
Francesco
>----Messaggio originale----
>Da: ahocevar at opengeo.org
>Data: 16/02/2012 16.33
>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>Cc: <openlayers-users at lists.osgeo.org>
>Ogg: Re: Re: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>
>On Thu, Feb 16, 2012 at 4:28 PM, francescoboccacci at libero.it
><francescoboccacci at libero.it> wrote:
>> sorry Andreas, my misunderstanding. I would like to try to manage some
>> information about traffic request from the server.
>
>You should do that on the server really.
>
>Andreas.
>
>> That's all. Thanks for your suggestions.
>> Francesco
>>
>>>----Messaggio originale----
>>>Da: ahocevar at opengeo.org
>>>Data: 16/02/2012 16.20
>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>Cc: <openlayers-users at lists.osgeo.org>
>>>Ogg: Re: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>>>
>>>You cannot. All I was saying was that the tileloaded event is also
>>>fired for tiles that come from the cache. Why would you want to know
>>>which tiles come from the browser cache?
>>>
>>>Andreas.
>>>
>>>On Thu, Feb 16, 2012 at 4:15 PM, francescoboccacci at libero.it
>>><francescoboccacci at libero.it> wrote:
>>>> Hi Adreas, how is possible capture this information?
>>>>
>>>> I use this code:
>>>>
>>>>
>>>> layer.events.register("tileloaded", layer, function() {
>>>> if (document.getElementsByClassName("olImageLoadError").
>>>> length) {
>>>> error+=1;
>>>> }
>>>> });
>>>> By this way i count the number of tiles that aren't loaded. How can
>> capture
>>>> the tiles coming from the cache?
>>>>
>>>> Thanks in advance
>>>>
>>>> Francesco
>>>>
>>>>
>>>>>----Messaggio originale----
>>>>>Da: ahocevar at opengeo.org
>>>>>Data: 16/02/2012 16.08
>>>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>>>Cc: <ramotswa at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>>>Ogg: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>>>>>
>>>>>No, this is not possible. But the tileloaded event will also fire when
>>>>>the image comes from the cache.
>>>>>
>>>>>Andreas.
>>>>>
>>>>>On Thu, Feb 16, 2012 at 2:56 PM, francescoboccacci at libero.it
>>>>><francescoboccacci at libero.it> wrote:
>>>>>> Good solution.. the last question is:
>>>>>> i can capture if an error is occurs during the tile loading
>>>> (olImageLoadError)
>>>>>> , but is possible to check if the tile is already present in my cache
>> (304
>>>>>> response from server)?
>>>>>> Thanks again ..
>>>>>>
>>>>>> Francesco
>>>>>>
>>>>>>>----Messaggio originale----
>>>>>>>Da: ramotswa at gmail.com
>>>>>>>Data: 16/02/2012 14.48
>>>>>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>>>>>Cc: <bamerbalazs at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>>>>>Ogg: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>>>>>>>
>>>>>>>So if you had an OSM layer.
>>>>>>>
>>>>>>>Register an event on tileloaded on it
>>>>>>> OSMM.events.register("tileloaded", function (e) {
>>>>>>> var myVar= e;
>>>>>>>}
>>>>>>>
>>>>>>>and then somewhere in "myVar" you need to check if "olImageLoadError"
>>>>>>>is present. One area could be myVar.element.childNodes[0].innerHTML
>>>>>>>
>>>>>>>for me that is:
>>>>>>>"<img id="OpenLayersDiv77" style="position: relative; width: 256px;
>>>>>>>height: 256px; " class="olTileImage olImageLoadError" src=....>"
>>>>>>>
>>>>>>>You can do a text comparison to find if olImageLoadError is in there
>>>>>>>and report something back accordingly.
>>>>>>>
>>>>>>>I have not ever implemented this nor do I think it is a particularly
>>>>>>>good solution, but it should do what you are after.
>>>>>>>
>>>>>>>Toby
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>On 16 February 2012 13:08, francescoboccacci at libero.it
>>>>>>><francescoboccacci at libero.it> wrote:
>>>>>>>> Hi, can you tell me how look at the css class? can you explain it
more
>>>>>> clear?
>>>>>>>> Can you write a simple example ?
>>>>>>>> Thanks in advance...
>>>>>>>>
>>>>>>>> Francesco
>>>>>>>>
>>>>>>>>>----Messaggio originale----
>>>>>>>>>Da: ramotswa at gmail.com
>>>>>>>>>Data: 16/02/2012 14.02
>>>>>>>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>>>>>>>Cc: <bamerbalazs at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>>>>>>>Ogg: Re: Re: [OpenLayers-Users] Capture Tile information
>>>>>>>>>
>>>>>>>>>No I understand what you are trying to do, but you can,
>>>>>>>>>programatically, look at the css class of every tile that comes in
>>>>>>>>>apparently.
>>>>>>>>>
>>>>>>>>>On 16 February 2012 12:53, francescoboccacci at libero.it
>>>>>>>>><francescoboccacci at libero.it> wrote:
>>>>>>>>>> ye..with firebug i can see all requests .. but i'd like to capture
>> the
>>>>>>>> response
>>>>>>>>>> from the server if i'm using the tile from my cache or from server
>>>> (fresh
>>>>>>>> tile).
>>>>>>>>>> I don't know if is possible but it will be very interesting.Maybe
we
>>>> have
>>>>>>>> to
>>>>>>>>>> work into openlayers code. Thanks
>>>>>>>>>>
>>>>>>>>>> Francesco
>>>>>>>>>>
>>>>>>>>>>>----Messaggio originale----
>>>>>>>>>>>Da: bamerbalazs at gmail.com
>>>>>>>>>>>Data: 16/02/2012 13.38
>>>>>>>>>>>A: <openlayers-users at lists.osgeo.org>
>>>>>>>>>>>Ogg: Re: [OpenLayers-Users] Capture Tile information
>>>>>>>>>>>
>>>>>>>>>>>Hi Imran,
>>>>>>>>>>>
>>>>>>>>>>>> You can see your http request using FireBug, if you are using
>>>> FireFox.
>>>>>>>>>>>
>>>>>>>>>>>Yes, but I thought a check during runtime from JavaScript. So that
>>>>>>>>>>>instead of displaying pink tiles, I would write a message about the
>>>>>>>>>>>problem with X layer.
>>>>>>>>>>>
>>>>>>>>>>>best regards: Balázs
>>>>>>>>>>>_______________________________________________
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>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
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>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
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>>>>>
>>>>>
>>>>>
>>>>>--
>>>>>Andreas Hocevar
>>>>>OpenGeo - http://opengeo.org/
>>>>>Expert service straight from the developers.
>>>>>
>>>>
>>>>
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>>>
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>>>
>>>--
>>>Andreas Hocevar
>>>OpenGeo - http://opengeo.org/
>>>Expert service straight from the developers.
>>>
>>
>>
>
>
>
>--
>Andreas Hocevar
>OpenGeo - http://opengeo.org/
>Expert service straight from the developers.
>
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