[ka-Map-users] selectMap and zoomTo at same time

[Adrian Strahan]

Many thanks for the speedy response.

I'm using version 0.2-20060208

Here's the scenario:
All my maps are of different counties (so they don't overlap) and they're in
different projection systems  (could this make a difference?).
When the user is browsing one county (say Map1), but then wants to view a
location in a different county (say Map2), I call something like this in
Javascript:

frames['myMapFrame'].document.kaCurrentTool.kaMap.selectMap("Map2");
frames['myMapFrame'].document.kaCurrentTool.kaMap.zoomTo(123456,567890);

What seems to happen is that the map changes to Map2 but the location is
completely wrong (could this be the right location but in Map1's
projection?).

I also get the following Javascript error:
Line: 207
Char: 2
Error: 'css.pixelWidth' is null or not an object
Code: 0

This appears to be in the wz_dragdrop.js file in the function dd.getDivW

It may be that kaMap isn't supposed to manage maps in different projection
systems like this?
But any further help would be most appreciated.
- Adrian

-----Original Message-----
From: Paul Spencer [mailto:pspencer at dmsolutions.ca] 
Sent: 21 March 2006 12:49
To: adrian.strahan at usegis.co.uk
Cc: ka-map-users at lists.maptools.org
Subject: Re: [ka-Map-users] selectMap and zoomTo at same time


What version of ka-Map are you using?  Looking at the current CVS  
version, it doesn't seem like this should be a problem since  
selectMap doesn't make an asynchronous call?  Also, you could modify  
the current extents of the map before calling selectMap to avoid the  
zoomTo step:

var aMaps = myKaMap.getMaps();
for (var i=0; i<aMaps.length; i++) {
   if (aMaps[i].name == theName) {
     aMaps[i].setCurrentExtents(minx,miny,maxx,maxy);
     myKaMap.selectMap(theName);
     break;
   }
}

Cheers

Paul

On 21-Mar-06, at 4:09 AM, Adrian Strahan wrote:

> Can anyone help me? - I'm trying to get KaMap to change map (using
> the selectMap function) and change location (using the zoomTo  
> function) at the same time.
> But it seems that by the time the map has changed, the zoomTo  
> function has been executed and is therefore ignored.
> I guess this is down to trying to call two asynchronous functions  
> in a synchronous way using Javascript.
> Any help on this would be most appreciated.
>
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org 
> http://lists.maptools.org/mailman/listinfo/ka-map-users

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|Paul Spencer                           pspencer at dmsolutions.ca   |
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|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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