Comments for ThrowLess.com

Comment on GMap geocoding – zoom level and accuracy by Aiska Hendra

Aiska Hendra — Thu, 29 Jan 2009 10:16:30 +0000

Hi Dusan,

Thank’s for the formula, that inspire me to improve it.

check this out.

http://aiskahendra.blogspot.com/2009/01/set-zoom-level-of-google-map-base-on.html

Comment on GMap geocoding – zoom level and accuracy by Fatalerror

Fatalerror — Wed, 05 Nov 2008 15:39:33 +0000

Hey Dusan, how can i use another url for geocoding?
Thank you!

Comment on Zoom level: Finding the right one by blogtravelagency

blogtravelagency — Tue, 09 Sep 2008 09:05:10 +0000

Link http://homemap.com.au/throwless-0.3/search.html dont work

Comment on Zoom level: Finding the right one by Dusan

Dusan — Thu, 20 Mar 2008 00:24:21 +0000

I am not sure if there is a service that will return viewport or range for multiple destinations. You may need to do separate request for each of them.

I am making the requests and parsing of files on the server and return back to browser already parsed data.

Comment on Zoom level: Finding the right one by Conrad

Conrad — Wed, 19 Mar 2008 18:12:09 +0000

Right now I am just using the GClientGeocoder to do my map searches. When a search is ambiguous I get a bunch of results, but each one has a lat,lng tied to it. I then make a link for each result that, when clicked, moves the marker to the result’s corresponding location. I would also like it to zoom to the appropriate level, which is why I have been looking at your posts. When I looked at http://maps.google.com/maps?q=search&output=js (’search’ query gives 8 results using the geocoder) I only saw one ‘viewport: { center: {…}, span: {…}}’ section. When I looked at http://maps.google.com/maps?q=search&output=kml there were no ‘range’ tags. Is there no way to do this with an ambiguous search? Would I have to use the geocoder like I was, then use your method on each geocoder result? Also, are you just fetching the url and parsing the file, or is there some easy implementation for these urls?

Comment on GMap geocoding – zoom level and accuracy by guigui

guigui — Mon, 10 Mar 2008 09:56:23 +0000

hey Dusan,

thanks for taking the time.

Cheers!

Comment on GMap geocoding – zoom level and accuracy by Dusan

Dusan — Thu, 06 Mar 2008 09:42:32 +0000

JavaScript has only natural (base E) logarithm.

logarithm base 2 can be rewritten as

log 2 (y) = Math.log(y)/Math.log(2)

where Math.log() is natural JavaScript logarithm.

So equation would look something like:

var zoom = 18-Math.log(3.3*range/Math.sqrt(x*x+y*y))/Math.log(2)

Comment on GMap geocoding – zoom level and accuracy by guigui

guigui — Wed, 05 Mar 2008 15:28:02 +0000

hi there,
Very Interesting investigation but i can’t make it work with javascript…

18-Math.log(3.3*4/Math.sqrt(398*398+256*256), Math.LOG2E)

if u have any ideas!

Cheers.

Comment on GMap geocoding – zoom level and accuracy by Dusan

Dusan — Mon, 25 Feb 2008 07:39:24 +0000

I am using different url for geocoding.

http://maps.google.com.au/maps?q=Poprad,Slovakia&output=kml

If you check docs about kml
http://code.google.com/apis/kml/documentation/kml_tags_21.html#range
it describes range as a distance from the earth. Distance returned by google is bigger for big cities and smaller for smaller cities.

Comment on GMap geocoding – zoom level and accuracy by JulienC

JulienC — Sun, 24 Feb 2008 10:42:02 +0000

This formula looks nice
But, can you please explain how you found it? In particular, I don’t know what the range parameter is. It doesn’t seem to be present in the doc.