Comments on: Export all MyMaps to Google Earth

By: Barry

Barry — Thu, 14 Aug 2008 12:23:18 +0000

@Mike, as per the recent update this script is no longer needed.

But anyway this script doesnt process any data, it seems that Google do this, they sort the KML export of the My Map.

You can see this directly without using the script (as you should now anyway)
http://maps.google.com/maps?f=q&hl=en&geocode=&q=http:%2F%2Fmaps.google.com%2Fmaps%2Fms%3Fie%3DUTF8%26hl%3Den%26msa%3D0%26output%3Dnl%26msid%3D103255705685677832404.000451ea7fd78d07190f1&ie=UTF8&ll=-2.234789,-118.305649&spn=177.041842,360&z=1

But are yuo aware you can bypass My Maps totally:
http://maps.google.com/?q=http://trinity.murphy.googlepages.com/rtw_mapv3.kml

However it appears that also sorts, so it appears only My Maps maintains order, if you display your KML (either directly or the output of a My Map) via Google Maps then it will end up sorted. SOL

By: Mike

Mike — Thu, 14 Aug 2008 10:48:42 +0000

I can successfully merge all my placemarks onto one map however when I do so it now sorts alphabetically instead of chronologically per my original KML file. It is a travel blog so chronological is key. Am I missing something?

Original Map : http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=103255705685677832404.000451ea7fd78d07190f1&z=2

New Map : http://maps.google.com/maps?q=http%3A%2F%2Fwww.nearby.org.uk%2FallMyMaps%2F48a3ff27afba3.kml

My Original KML File : http://trinity.murphy.googlepages.com/rtw_mapv3.kml

By: ehg

ehg — Sat, 02 Aug 2008 22:44:17 +0000

Hi Barry,thank you very much for your invetsigations & the clarification of this limitation-matter

By: Barry

Barry — Sat, 02 Aug 2008 10:45:38 +0000

Update, 2nd August 2008

Suddenly it seems that the KML export from My Maps no longer pages like it used to, basically making this script redundant - which was always the intention!

So if your file has under 1000 features, then just use the link ‘View in Google Earth’ to get all the data. If you want the
actual data you can change the ‘output=nl’ to ‘output=kml’ to get the KML data rather than a Network Link to it

By: Barry

Barry — Fri, 23 May 2008 10:29:05 +0000

It still doesnt display everything - the browser will not cope with too many features on the screen at once - the map just gets too slow.

The advantage of this method of display is that Google Maps uses a regional culling method. Basically it tries display a good overview, then zooming in will reveal more detail and features.

If you really want to get round it you can use the Google Maps API to create a map, and use a different KML parsing method (ie not Googles GGeoXML) then you can display all the features you like, just that your map will be slow to use.
(in fact if you really do want it on Google Maps website, then you might be able to make it as a maplet - that probably doest impose limits - just again the map will become slow)

By: Three Wheeled

Three Wheeled — Fri, 23 May 2008 06:51:12 +0000

I was directed to your page through a request for help on Google help groups. My problem was that due to my map going over 200 markers and beign displayed on two pages, I was losing a very detailed boundary line. I wanted the boundary line to be able to appear on both pages, without having to re-plot it. However, somebody directed me here (presumably to get around the 200+ markers problem).

Your code works very well, and even allows me to see both pages at once, but when I view my map through the code, certain of the markers don’t appear unless I deselect, and re-select the display buttons that you mark on the right of the map. Eg. it says it displays everything, but it seems that there’s an odd kind of limitation.

Are you able to be of assistance? (Not sure if this is Google maps amending your hack, or something to do with the hack itself)

By: Barry

Barry — Fri, 18 Apr 2008 21:20:19 +0000

Well realised the script could actully download the first page and count how many items are really fetched that way it can calculate it all magically! (you still need to paste full last page url as we need it to get the number of pages)

By: Barry

Barry — Fri, 18 Apr 2008 20:48:00 +0000

oh missed the second comment from carl

Matt and Carl, looking at those links they report num=200 which suggest 200 results per page, but is clearly wrong from that you report 2 pages, and only start at 32…

For now have made it that if ’start’ is lower than ‘num’ it will use that number, which of course is fine for 2 pages, but if more it wont work.

I guess Google have changed something that the ‘num’ is fixed, but it does mean that the script no longer is reliable

By: Matt

Matt — Thu, 17 Apr 2008 20:38:06 +0000

Same as Carl. I paste the page 2 link and get “there doesn’t appear to be more than one page”
http://maps.google.com/maps/ms?ie=UTF8&hl=en&oe=UTF8&msa=0&msid=105408878750211905499.00044b17323a49e833956&num=200&start=32

By: carl camera

carl camera — Wed, 02 Apr 2008 13:48:45 +0000

barry, I am getting a different response when trying to generate the kml from the nearby tool. I right-click the “2″ link at the bottom of the left-side frame and copy and paste that url into the kml generator, but it reports: There doesn’t appear to be more than one page.

http://maps.google.com/maps/ms?ie=UTF8&hl=en&oe=UTF8&msa=0&msid=111489358896406919711.0004473bcad5c68d86575&num=200&start=32