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Larry Kelly

2007-Mar-01 15:12 UTC

YM4R multiple points on Google Map

Just started using YM4R to display a Google Map.  I can display a map with 1
Marker.  But, I''d like to initialize the map with multiple markers. 
Does
anyone know how to do that?

I''ve tried:

  def index
    @map = GMap.new("map_div")
    @map.control_init(:large_map => true,:map_type => true)
    @map.center_zoom_init([47.2700000, -122.311880],15)
    @map.overlay_init(GMarker.new([47.2700000, -122.311880],:title =>
"Hello", :info_window => "Info! Info!"))
    @map.add_overlay(GMarker.new([47.2700000, -122.311800],:title =>
"M2",
:info_window => "Marker 2"))
  end

The .add_overlay(..) doesn''t display.

Also,
Does anyone know how to get the GPS coordinates for a street address?

-- 
Best Regards,
-Larry
"Work, work, work...there is no satisfactory alternative."
            --- E.Taft Benson

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Hunter Hillegas

2007-Mar-01 18:10 UTC

head link

Re: YM4R multiple points on Google Map

Can''t you just feed in an array of markers?

@markers.each do |marker_seq|
           @map.overlay_init(marker_seq)
end


On Mar 1, 2007, at 7:12 AM, Larry Kelly wrote:
> Just started using YM4R to display a Google Map.  I can display a  
> map with 1 Marker.  But, I''d like to initialize the map with  
> multiple markers.  Does anyone know how to do that?
>
> I''ve tried:
>
>   def index
>     @map = GMap.new("map_div")
>     @map.control_init(:large_map => true,:map_type => true)
>     @map.center_zoom_init([47.2700000, -122.311880],15)
>     @map.overlay_init(GMarker.new([47.2700000 , -122.311880],:title  
> => "Hello", :info_window => "Info! Info!"))
>     @map.add_overlay(GMarker.new([47.2700000, -122.311800],:title  
> => "M2", :info_window => "Marker 2"))
>   end
>
> The .add_overlay(..) doesn''t display.
>
> Also,
> Does anyone know how to get the GPS coordinates for a street address?
>
> -- 
> Best Regards,
> -Larry
> "Work, work, work...there is no satisfactory alternative."
>             --- E.Taft Benson
> >

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Larry Kelly

2007-Mar-01 18:54 UTC

head link

Re: YM4R multiple points on Google Map

Thanks, that worked, (once I moved the coordinated far enough apart that
both markers would display).
-Larry

On 3/1/07, Hunter Hillegas
<lists-HAWAbpnI61OZ1JSuHaJ1sQC/G2K4zDHf@public.gmane.org>
wrote:>
>
> Can''t you just feed in an array of markers?
>
> @markers.each do |marker_seq|
>            @map.overlay_init(marker_seq)
> end

This haven''t figured out how to get the longitude, latitude for a given
US
address. Should I put that question in a separate post?
-Larry

On Mar 1, 2007, at 7:12 AM, Larry Kelly wrote:>
> > Just started using YM4R to display a Google Map.  I can display a
> > map with 1 Marker.  But, I''d like to initialize the map with
> > multiple markers.  Does anyone know how to do that?
> >
> > I''ve tried:
> >
> >   def index
> >     @map = GMap.new("map_div")
> >     @map.control_init(:large_map => true,:map_type => true)
> >     @map.center_zoom_init([47.2700000, -122.311880],15)
> >     @map.overlay_init(GMarker.new([47.2700000 , -122.311880],:title
> > => "Hello", :info_window => "Info! Info!"))
> >     @map.add_overlay(GMarker.new([47.2700000, -122.311800],:title
> > => "M2", :info_window => "Marker 2"))
> >   end
> >
> > The .add_overlay(..) doesn''t display.
> >
> > Also,
> > Does anyone know how to get the GPS coordinates for a street address?
> >
> > --
> > Best Regards,
> > -Larry
> > "Work, work, work...there is no satisfactory alternative."
> >             --- E.Taft Benson
> > >
>
>
> >
>

-- 
Best Regards,
-Larry
"Work, work, work...there is no satisfactory alternative."
            --- E.Taft Benson

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Larry Kelly

2007-Mar-02 01:23 UTC

head link

Re: YM4R multiple points on Google Map

Found the answer to the coordinate problem.  Way at the bottom of the
readme, it mentions in passing that GMarker now accepts  strings as well as
coordinates.  So all I have to do is:

@address = GMarker.new("some address that Google can find")

Very cool!

There is also a Geocode::Get method that queries Google and returns
coordinate info.  Haven''t played with it yet.
-Larry

On 3/1/07, Larry Kelly <ldk2005-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> Thanks, that worked, (once I moved the coordinated far enough apart that
> both markers would display).
> -Larry
>
> On 3/1/07, Hunter Hillegas <
lists-HAWAbpnI61OZ1JSuHaJ1sQC/G2K4zDHf@public.gmane.org> wrote:
> >
> >
> > Can''t you just feed in an array of markers?
> >
> > @markers.each do |marker_seq|
> >            @map.overlay_init(marker_seq)
> > end
>
>
> This haven''t figured out how to get the longitude, latitude for a
given US
> address. Should I put that question in a separate post?
> -Larry
>
> On Mar 1, 2007, at 7:12 AM, Larry Kelly wrote:
> >
> > > Just started using YM4R to display a Google Map.  I can display a
> > > map with 1 Marker.  But, I''d like to initialize the map
with
> > > multiple markers.  Does anyone know how to do that?
> > >
> > > I''ve tried:
> > >
> > >   def index
> > >     @map = GMap.new ("map_div")
> > >     @map.control_init(:large_map => true,:map_type => true)
> > >     @map.center_zoom_init([47.2700000, -122.311880],15)
> > >     @map.overlay_init(GMarker.new([47.2700000 , -122.311880
],:title
> > > => "Hello", :info_window => "Info!
Info!"))
> > >     @map.add_overlay(GMarker.new([47.2700000, -122.311800],:title
> > > => "M2", :info_window => "Marker 2"))
> > >   end
> > >
> > > The .add_overlay(..) doesn''t display.
> > >
> > > Also,
> > > Does anyone know how to get the GPS coordinates for a street
address?
> > >
> > > --
> > > Best Regards,
> > > -Larry
> > > "Work, work, work...there is no satisfactory
alternative."
> > >             --- E.Taft Benson
> > > >
> >
> >
> > > >
> >
>
>
> --
> Best Regards,
> -Larry
> "Work, work, work...there is no satisfactory alternative."
>             --- E.Taft Benson
>


-- 
Best Regards,
-Larry
"Work, work, work...there is no satisfactory alternative."
            --- E.Taft Benson

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Twistter Shock

2010-Sep-19 19:09 UTC

head link

Re: YM4R multiple points on Google Map

Hunter Hillegas wrote:> Can''t you just feed in an array of markers?
> 
> @markers.each do |marker_seq|
>            @map.overlay_init(marker_seq)
> end
Hi Hunter

I have a similar problema with YM4R

My map only display the last point, this is my code:

     @map = GMap.new("map_div_id")
     @map.control_init(:large_map => true, :map_type => true)
     @map.center_zoom_init([40.41,-3.70], 4)


     markers = Array.new()

     for lab in @laboratories do
         html = gethtmlmap(lab)
         c1, c2 = lab.coords.split(",")

          markers << GMarker.new([c1.to_i,c2.to_i],
         :title => lab.name, :info_window => html)

     end

     markers.each do |marker_seq|
           @map.overlay_init(marker_seq)
     end

Could you help me please?

Thanks in advance
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Walter McGinnis

2010-Sep-19 23:29 UTC

head link

Re: Re: YM4R multiple points on Google Map

Just a quick link to some example code that may help you:

http://github.com/kete/kete/blob/master/app/views/search/_results.rhtml
# lines 43 - 63ish

Pay particular attention to lines 61 and 62.

Hope that helps,
Walter

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Twistter Shock

2010-Sep-20 07:49 UTC

head link

Re: Re: YM4R multiple points on Google Map

Walter McGinnis wrote:> Just a quick link to some example code that may help you:
> 
> http://github.com/kete/kete/blob/master/app/views/search/_results.rhtml
> # lines 43 - 63ish
> 
> Pay particular attention to lines 61 and 62.
> 
> Hope that helps,
> Walter
Hi Walter, thanks for your reply

My original code were like this post, with it, only show the last result 
of my query, like this:


     @map = GMap.new("map_div_id")
     @map.control_init(:large_map => true, :map_type => true)
     @map.center_zoom_init([40.41,-3.70], 4)

     for lab in @laboratories do
         html = gethtmlmap(lab)
         c1, c2 = lab.coords.split(",")

          marker = GMarker.new([c1.to_i,c2.to_i],
         :title => lab.name, :info_window => html)
          @map.overlay_init(marker)
     end

I don''t know what is wrong.

Thanks!
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Walter McGinnis

2010-Sep-20 21:22 UTC

head link

Re: Re: Re: YM4R multiple points on Google Map

Hmm, I don''t see an obvious cause for the problem. I would chuck in a
debug on @map and perhaps marker objects to see what they look like.

One difference that my code has (in the controller where @map object
is initialized) is that it uses this:

@map.center_zoom_on_points_init(*@coordinates_for_results)

I would say that implies that it can handle multiple markers, but if
it is what turns on support for multiple markers it''s pretty
unexpected.

Hope this helps,
Walter


On Mon, Sep 20, 2010 at 7:49 PM, Twistter Shock
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Walter McGinnis wrote:
>> Just a quick link to some example code that may help you:
>>
>> http://github.com/kete/kete/blob/master/app/views/search/_results.rhtml
>> # lines 43 - 63ish
>>
>> Pay particular attention to lines 61 and 62.
>>
>> Hope that helps,
>> Walter
>
> Hi Walter, thanks for your reply
>
> My original code were like this post, with it, only show the last result
> of my query, like this:
>
>
>     @map = GMap.new("map_div_id")
>     @map.control_init(:large_map => true, :map_type => true)
>     @map.center_zoom_init([40.41,-3.70], 4)
>
>     for lab in @laboratories do
>         html = gethtmlmap(lab)
>         c1, c2 = lab.coords.split(",")
>
>          marker = GMarker.new([c1.to_i,c2.to_i],
>         :title => lab.name, :info_window => html)
>          -mDGcsIj0EBRcKHiaeZqq9g@public.gmane.org_init(marker)
>     end
>
> I don''t know what is wrong.
>
> Thanks!
> --
> Posted via http://www.ruby-forum.com/.
>
> --
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>
>
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Walter McGinnis

2010-Sep-20 21:50 UTC

head link

Re: Re: Re: YM4R multiple points on Google Map

On Tue, Sep 21, 2010 at 9:22 AM, Walter McGinnis
<walter.mcginnis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> One difference that my code has (in the controller where @map object
> is initialized) is that it uses this:
>
> @map.center_zoom_on_points_init(*@coordinates_for_results)
>
This indeed is the source of your problem I think. You code centers on
one specific point with a zoom level of 4.  If your markers don''t fall
within the map''s area as centered around this point at this zoom
level, they appear to not exist.  However, they are simply not
visible.

To test my theory, simply try zooming out and see if the other markers appear.

With multiple markers you almost certainly want to use the
center_zoom_on_points_init method to get a map that will show all
points.  There is a decent walk through of the process here:

http://www.codequest.eu/articles/google-maps-rails-and-solr-spatial-search

Cheers,
Walter

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Twistter Shock

2010-Sep-21 07:13 UTC

head link

Re: Re: Re: YM4R multiple points on Google Map

Walter McGinnis wrote:> On Tue, Sep 21, 2010 at 9:22 AM, Walter McGinnis
> <walter.mcginnis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>
>> One difference that my code has (in the controller where @map object
>> is initialized) is that it uses this:
>>
>> @map.center_zoom_on_points_init(*@coordinates_for_results)
>>
> 
> This indeed is the source of your problem I think. You code centers on
> one specific point with a zoom level of 4.  If your markers don''t
fall
> within the map''s area as centered around this point at this zoom
> level, they appear to not exist.  However, they are simply not
> visible.
> 
> To test my theory, simply try zooming out and see if the other markers 
> appear.
> 
> With multiple markers you almost certainly want to use the
> center_zoom_on_points_init method to get a map that will show all
> points.  There is a decent walk through of the process here:
> 
> http://www.codequest.eu/articles/google-maps-rails-and-solr-spatial-search
> 
> Cheers,
> Walter

Hi Walter!
Thanks for your reply.

I tried with zoom level 0 and only display the last result of the 
recordset :-S

I will read this article and try again.

Thanks!
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Rails - Mar 2007 - YM4R multiple points on Google Map

YM4R multiple points on Google Map

Re: YM4R multiple points on Google Map

Re: YM4R multiple points on Google Map

Re: YM4R multiple points on Google Map

Re: YM4R multiple points on Google Map

Re: Re: YM4R multiple points on Google Map

Re: Re: YM4R multiple points on Google Map

Re: Re: Re: YM4R multiple points on Google Map

Re: Re: Re: YM4R multiple points on Google Map

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