[Phpmyadmin-devel] Visualizing GIS data.

[Madhura Jayaratne]

On Tue, May 31, 2011 at 9:11 PM, Aris Feryanto <aris_feryanto at yahoo.com>wrote:

>
> On 31 Mei 2011, at 22:19, Madhura Jayaratne <madhura.cj at gmail.com> wrote:
>
>
>
> On Tue, May 31, 2011 at 5:56 PM, Aris Feryanto < <aris_feryanto at yahoo.com>
> aris_feryanto at yahoo.com> wrote:
>
>> Hi Madhura,
>>
>> On 31 Mei 2011, at 17:42, Madhura Jayaratne < <madhura.cj at gmail.com>
>> madhura.cj at gmail.com> wrote:
>>
>>
>>
>> On Tue, May 31, 2011 at 4:09 PM, Madhura Jayaratne <<madhura.cj at gmail.com><madhura.cj at gmail.com>
>> madhura.cj at gmail.com> wrote:
>>
>>> Hi all,
>>>
>>> I have pushed into my repo, the code for visualizing GIS data. I used SVG
>>> for this purpose and i'm writing the SVG tags accordingly. This allows the
>>> users without JS support also to view the visualizing oppose to using jQuery
>>> SVG to generate SVGs. Further it allows the SVGs to be saved, which is one
>>> of the upcoming features. However I use jQuery SVG to manipulate the SVGs
>>> (zoom and pan), so the users with JS support gets a better user experience.
>>>
>>> I have also integrated two small libraries [1],[2] to allow panning the
>>> SVG on dragging and zooming on mouse wheel movement. These are not strictly
>>> needed but nice to have ones.
>>>
>>> One problem of SVG is the IE versions <=8 does not support is. I am using
>>> the GD library to generate a PNG image for them and this is in line with
>>> saving those visualization to various formats.
>>>
>>> You can test this out at my demo server[3] using the data in the opengis
>>> table. Please be kind enough to share your comments.
>>>
>>> --
>>> Thanks and Regards,
>>>
>>> Madhura Jayaratne
>>>
>>> [1]  <http://brandonaaron.net/code/mousewheel/docs><http://brandonaaron.net/code/mousewheel/docs>
>>> http://brandonaaron.net/code/mousewheel/docs
>>> [2]  <http://threedubmedia.com/> <http://threedubmedia.com/>
>>> http://threedubmedia.com/
>>> [3]  <http://demo.phpmyadmin.net/gsoc-madhura/index.php><http://demo.phpmyadmin.net/gsoc-madhura/index.php>
>>> http://demo.phpmyadmin.net/gsoc-madhura/index.php
>>>
>>
>> Please note that saving the visualization to various formats (SVG, PNG,
>> PDF) is still not working. So please exclude them from your testings and
>> trying outs
>>
>>
>> Hi Aris,
>
>
>> The basic zooming and panning functionally works well.
>>
>
> Thank you for taking time to test the functionality.
>
>>
>> But, when I tried to zoom using mouse wheel, the page also scrolled (my
>> screen height is 800 pixels). Maybe some javascript to prevent the default
>> page scrolling behavior can be added.
>>
>
> Zooming using mouse wheel happens only when you have the cursor over the
> image. When you have it elsewhere the page is scrolling. If you still find
> the prob pls. let me know.
>
>
> Yes, Madhura, I had my cursor over the SVG, and the page also scrolled.
> I've tested this on the latest chrome and firefox on ubuntu 11.04.
>
> Thanks Aris, I'll look into it.

-- 
Thanks and Regards,

Madhura Jayaratne
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