[khtml.maplib] Re: clear markers
- From: Ewald Wieser <aevoid@xxxxxxxxx>
- To: khtml.maplib@xxxxxxxxxxxxx
- Date: Tue, 30 Aug 2011 19:04:54 +0200
Hello again,
there is an API-documentation in the zip-file and some examples for the markers
as well.
maybe this can help you.
btw: i just made another change in the lib today deleting two classes (mr.Size
and mr.Point).
so you might want to replace the definitions for image and shadow with:
// define icon
var image = new mr.overlay.MarkerImage(
'img/image.png',
{width: 20, height: 20},
{x: 0, y: 0},
{x: 10, y: 20}
);
// define shadow
var shadow = new mr.overlay.MarkerImage(
'img/shadow.png',
{width: 34, height: 20},
{x: 0, y: 0},
{x: 10, y: 20}
);
if you need further help, it would be good if you could paste the output of the
developer-tool console of your browser.
hope this helps.
br ewald
Am 30.08.2011 um 18:17 schrieb Mátrai Tamás:
> Hello Eward!
>
> Thx for the fast reply!
>
> I have downloaded your fixed code but unfortunately it does not work.
> I can not even add markers to map, so my map is empty.
> I use the same function to show markers I sent in my previous mail.
> When I switch back to the 'old' library my markers are shown on the map -
> without making any changes in code.
> I triple checked it, so it is 100% sure on my side.
>
> Okkey, when I am completed I'd show you!
>
> BR:
> Tamas
>
>
> On Aug 30, 2011, at 5:49 PM, Ewald Wieser wrote:
>
>> Hello Tamas,
>>
>> with marker.clear() you can remove one marker from the map.
>> Unfortunately I just found a little bug in the clear-function.
>> I have uploaded a new version at
>> http://mt091110.students.fhstp.ac.at/khtml/maplib.tar.gz
>>
>> If you would like to remove all overlays at once, you can use
>> map.removeOverlays();
>>
>> Sorry for the inconvenience, but this library is still beta.
>> But I'm glad that you like it!
>>
>> Maybe you can show us the result of your work.
>> brgds Ewald
>>
>>
>> Am 30.08.2011 um 17:18 schrieb Mátrai Tamás:
>>
>>> Hi All!
>>>
>>> I am Tamas Matrai from Hungary, I've just start to play with KHTML maps.
>>>
>>> It is looking great, it is very promising, thx for this great project!
>>> I could create my app I need in some hours.
>>> It is a simple one that shows some markers on the map, based data coming
>>> from GPS devices.
>>>
>>> My problem is with clearing markers from the map, after adding one I can
>>> not clear it. It tried several ways but neither works.
>>>
>>> I use GSOC improved javascript library from here:
>>> http://wiki.openstreetmap.org/wiki/Improving_khtml.maplib#Markers
>>>
>>> My code (note this is very experimental one!):
>>> I have a global variable:
>>>
>>> var mr = new Object(khtml.maplib);
>>>
>>> The following function adds a marker to the map (markerStr some delimited
>>> string contains position and extra data):
>>>
>>> function RefreshMarkers(markersStr)
>>> {
>>> var sentences = markersStr.split("\r\n");
>>>
>>> for (i = 0; i < sentences.length; i++) {
>>>
>>> var sentenceParts = sentences[i].split("%_@");
>>>
>>> var image = new mr.overlay.MarkerImage(
>>> 'khtml/img/standardmarker_nor.png',
>>> new mr.Size(20, 20),
>>> new mr.Point(0, 0),
>>> new mr.Point(10, 20)
>>> );
>>>
>>> var shadow = new mr.overlay.MarkerImage(
>>> 'khtml/img/standardmarkershadow_nor.png',
>>> new mr.Size(34, 20),
>>> new mr.Point(0, 0),
>>> new mr.Point(10, 20)
>>> );
>>>
>>> var shape = {
>>> coord: [14, 0, 15, 1, 16, 2, 17, 3, 18, 4, 19, 5, 19,
>>> 6, 19, 7, 19, 8, 19, 9, 19, 10, 19, 11, 19, 12, 19, 13, 19, 14, 18, 15, 17,
>>> 16, 16, 17, 15, 18, 13, 19, 5, 19, 4, 18, 2, 17, 2, 16, 1, 15, 0, 14, 0,
>>> 13, 0, 12, 0, 11, 0, 10, 0, 9, 0, 8, 0, 7, 0, 6, 0, 5, 1, 4, 2, 3, 2, 2, 4,
>>> 1, 5, 0, 14, 0],
>>> type: 'poly'
>>> };
>>>
>>> var pLatLng = new mr.LatLng(sentenceParts[4],
>>> sentenceParts[3]);
>>> var marker2 = new mr.overlay.Marker({
>>> position: pLatLng,
>>> map: map,
>>> title: sentenceParts[1] +
>>> "\r\n" + sentenceParts[2] +
>>> "\r\n" + sentenceParts[0] +
>>> "\r\n" + sentenceParts[5] + " km/h" +
>>> "\r\n" + sentenceParts[9]
>>> });
>>> }
>>> }
>>>
>>>
>>> So, as I said adding is OK, but later I can not remove them (neither in
>>> this RefreshMarkers function for testing purposes).
>>> So, how can I do this? Is there any way to clear all markers from a map?
>>>
>>> Thanks,
>>> BR:
>>> Tamas
>>>
>>
>
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