[Sigia-l] 800 or 1024 - Which min. display resolution to build for?

[Paola Kathuria]

John McCrory wrote:
> http://www.johnmccrory.com/miscfiles/visitor_viewport_data_sample.txt

I found this today when catching up on list mail and I
ended up procrastinating by playing with the data in a
spreadsheet.

I've prepared a summary of the top 20 combinations of screen
resolution and viewport size. They account for 91% of the
logged visits.

The summary shows viewport size as a percentage of the
screen size (e.g., a viewport of 400 x 300 on a 800 x 600
screen is 25%). The last column contains actual viewport
dimensions (the most popular) for the screen/viewport % combo.

========================================================================
Screen       Viewport  # visits  % visits    Example viewport (# visits)
-------------------------------------------------------------------------
1024 x 768      80%       1509     22%       1000 x 600 (517)
1024 x 768      70%       1250     18%       1000 x 570 (303)
 800 x 600      70%       1177     17%        780 x 430 (540)
1024 x 768      60%        480      7%        800 x 600 (31)
 800 x 600      60%        416      6%        780 x 380 (100)
1280 x 1024     80%        229      3%       1260 x 850 (34)
1024 x 768      40%        174      3%        770 x 430 (14)
1024 x 768      50%        151      2%        840 x 470 (7)
1280 x 800      80%        146      2%       1260 x 630 (41)
1280 x 800      70%        125      2%       1260 x 580 (29)
 800 x 600      80%        122      2%        780 x 460 (83)
1152 x 864      80%         93      1%
1280 x 1024     70%         68      1%
 800 x 600      50%         65      1%
1400 x 1050     80%         59	    1%
1024 x 768      30%         44      1%
1280 x 1024     60%         44      1%
 800 x 600      30%         40      1%
1280 x 1024     90%         39      1%
1280 x 800      60%         38      1%
-------------------------------------------------------------------------

(This summary is based on viewport percentages rounded to the
nearest 10% based on viewport dimensions rounded to the nearest
10 pixels.)

You can get the collated data that this summary is based on from
http://www.limov.com/share/viewport-percentages.csv (2200 rows)

It contains three columns:
- screen resolution
- viewport as % of screen
- # visits

Example row: "800 x 600",56,30
Explanation: 30 visits had a viewport 56% of 800x600 screen


Note that the logged raw data contains repeat visits from
visitors and I suspect around 30% is duplicate, which will
skew any analysis. This means you should take any stats
resulting from this data with a pinch of salt.

John, if you collect data again, I suggest you adjust the script
to only collect the screen/viewport stats once per visitor
(by visitor id in a cookie and/or session id). Also collect
IP address, date and time (H:M:S) to help eliminate duplicate
visitors from the stats.

Thanks very much for making your data and your script available.


Paola