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need help on finding coordinates on image maps?
Godsend
post May 31 2004, 01:48 AM
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-Co-ordinates

When you've chosen or created your desired image, you then insert it into an image editor (I use Ms Paint) so that you can find its co-ordinates. Try to either write down different co-ordinates of take them one by one and then insert them into your document. You'll need different co-ordinates depending on what sort of "hot spot" you'd like to use. Hot spots are covered in the next paragraph.

-Hot Spot

Now that you've got your image and co-ordinates, HTML comes to finalise your job. There are three different shapes (commonly termed "hot spots") that can be used in image maps. They are as follows:

-RECT
-CIRCLE
-POLYGON

-Rect

Rect is obviously short for rectangle. For this one, you'll need two different co-ordinates. Top right and bottom left.

-Circle

Many people get confused with this one and many don't even know that it exists. I personally think it's the easiest of all. All you need is the centre co-ordinate (the point in the centre of your shape) and it's radius size (remember your maths: radius is HALF the diameter. Don't get diameter and radius mixed up!).

- Polygon

The most common hot spot used. This is used for when you can't use neither of the above hot spots. This one uses the co-ordinates of the points in order. So if you're going to have a pentagon (shape with five sides), then you list all five co-ordinates but make sure they're listed in ORDER. One after the other, otherwise you'll confuse some browsers.
 

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