Thanks, and thanks for refreshing my memory on this matter. You can do some interesting things with the tool, but it has to be used sparingly. Too many cell “photos” can slow worksheet processing prohibitively. – Abbott
To access the chapter, click
http://www.apress.com/9781430235453
When you get there, click the Source Code/Downloads tab and the resulting Download Now link.
spreadsheetjournalism 
I use the camera tool quite a bit, but your climate example is a little bit out of the ordinary. I will develop my own examples, inspired by you.
Duncan
Thanks, and thanks for refreshing my memory on this matter. You can do some interesting things with the tool, but it has to be used sparingly. Too many cell “photos” can slow worksheet processing prohibitively. – Abbott