[Google Maps API V3][Markerclusterer] I cannot use any function implemented within MarkerClusterer object

[Junsuk Bang]

Hi,

During making an example using markerclusterer library, I found that any of functions in this object was not working.

Here is my example, which allows you to set a marker at the point you clicked. 

Then, What I'm trying is that markerclusterer automatically clusts all the points User clicked.

http://www.sphinfo.co.kr/sample/2011-11-07_Marker_clustering_example.html

However, My Google Chrome devepoling tool said that functions I used, such as addMarker() and clearMarkers(), cannot be called.

"Cannot call method "addMarker" of undefined" This is what it exactly said.

FYI, I have used libraries for v3,  http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/src/markerclusterer_compiled.js, and I have also tried with non-compiled(standard) version. But, Nothing was different.

If somebody has any idea, help me.

Thanks in advance.

Junsuk Bang

[geoco...@gmail.com]

On Nov 7, 7:55 pm, Junsuk Bang <jsb...@sphinfo.co.kr> wrote:
> Hi,
>
> During making an example using markerclusterer library, I found that any of
> functions in this object was not working.
>
> Here is my example, which allows you to set a marker at the point you
> clicked.
> Then, What I'm trying is that markerclusterer automatically clusts all the
> points User clicked.
>

> http://www.sphinfo.co.kr/sample/2011-11-07_Marker_clustering_example....

>
> However, My Google Chrome devepoling tool said that functions I used, such
> as addMarker() and clearMarkers(), cannot be called.

That is because the one that you declare in your initialize function
is local to the initialize function (the "var" keyword in there re-
declares it in the local scope).

-- Larry

>
> "Cannot call method "addMarker" of undefined" This is what it exactly said.
>

> FYI, I have used libraries for v3,  http://google-maps-utility-library-v3.googlecode.com/svn/trunk/marker...,

[Junsuk Bang]

First of all, thank you for your response.

I found that I declared MarkerClusterer variable as a global one at the 21st line of my codes, which is

         var markerCluster = null;

I have already got this idea from the example of markerclusterer.

Would you please check it?

http://www.sphinfo.co.kr/sample/2011-11-07_Marker_clustering_example.html

Thank you again.

Junsuk Bang

[Rossko]

> I found that I declared MarkerClusterer variable as a global one at the
> 21st line of my codes, which is
>          var markerCluster = null;

Yes, but
function initialize(){
...
var markerCluster = new MarkerClusterer(map,markers);
creates another 'markerCluster' local to initialize. The global
'markerCluster' stays null.
If you want to assign the existing global 'markerCluster' instead,
don't use the 'var' keyword

[Junsuk Bang]

Thanks for you guys' help!

I really appreciate it!