[thelist] Google (or other) Maps / Ajax Zooming for images

Jay Turley jayturley at gmail.com
Thu Oct 25 22:05:33 CDT 2012

The location depends on the precision you need.

I did this with lat/long to six decimal places because the client needed
rooftop-level precision.

If using town names is an acceptable level of precision, you will still
need to do a lookup first in order to determine the lat/long coordinates
for actual icon placement.

My information stems from experience with Google Maps API v2 and v3 so YMMV.


On Thu, Oct 25, 2012 at 11:15 AM, Bob Meetin <bobm at dottedi.biz> wrote:

> Maps:
> I have a project in hand that involves displaying a google map or similar
> and positioning entities onto the map.  You have for instance a couple
> thousand entries in a database with some associated location information.
> The goal is to place these entries all on the map with some associated
> content (name, etc) which will become viewable, eventually clickable as you
> zoom in.
> In order to pinpoint the locations on the map, do you need X/Y coordinates
> or would a simple address like "Paris, France" or "Cleveland, OH, USA" be
> adequate? Any recommendations on the mapping program, Google or other?
> Ajax Zooming (for images):
> Different need, doesn't have to be ajax but it should be something that is
> php-friendly. I scour the internet and find a multitude of options, Can I
> get a few recommendations to narrow down the list?
> A complication is that the customer would like to be able to use the
> software to compare images side by side.  Most of what I've seen opens up
> in a lightbox or possibly inline, but a single zoomable image.  Is it
> doable and/or reasonable to be able to open up 2 images side by side both
> in a zooming program such that you could compare fine details?
> --
> Bob
> --
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