troubleshooting Question

X Y position to array item?

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websssFlag for Kenya asked on
JavaScriptMath / Science
4 Comments1 Solution211 ViewsLast Modified:
I have an image which is 320x240 px

I have an array of values for each pixel in the image (76,800 points)

If the user hovers over any part of the image I need to look at the array and return the corresponding value for it.

i.e.
X Y position [0,0] of the image = the first value in the array.

If I wanted to find out the X Y position [65,33] of the image, and then look up the  value in the array, what would be the correct forumla to do this
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