Thursday, May 19, 2005

The Compare Feature

The Compare Feature

I wanted to tell you about a new feature of Percevia that lets you compare objects side by site. Its called, tada, Compare. I'll show you an example using the Birds of North America database.

On the search page in the Match window you can see that each object has a check box under it. This is for selecting it. To compare selections follow these steps.

1. Check any number of boxes.
2. Click the Compare Selections button.

This is shown below:

Once you do this a page should appear with all the objects (birds) you selected displayed in side by side comparison grid. Click this link to see how it will look: Comparison Grid.

To compare other birds, click the Show All button, then select just the birds you want to compare and click the Compare button.

This feature is useful when you have narrowed your search down to 2 to 10 or so objects (birds) and would like to just inspect them visually for the differences.


Blogger Simone Whitecloud said...

I think the Compare grid is most useful when practicing birding by ear. If you've ever tried this with a CD, it means jumping from track to track repeatedly, or sometimes even having to switch CDs. This is a much more convenient means of comparing bird song. The only thing that would make this better would be to know where the recordings were made, so I would know which dialect I'm hearing.

6:26 PM  
Blogger Mitchell Waite said...

Your suggestion is an excellent use for the Compare grid. I hope to add the region where the recording was made in the future.

The Compare grid is also useful when the differences between several birds is very subtle. For example you can look at there heads side by side and see the minor differences. Try doing this with a book, you would need sissors!

6:41 PM  
Blogger david lukas said...

Using the Compare grid to line up similar heads or other features is an incredibly useful tool, this is not even a feature that you find in the best field guides and no other bird site on the web has such a feature. Even when you're not trying to identify a specific bird, it is a great way to learn your birds! It could easily be used in a classroom setting or with students.

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