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where is (0,0)?

From: John A. Grant <jagrant@gsc.nrcan.gc.ca>
Date: Sat, 1 Jan 2000 20:05:37 -0500
Message-ID: <001001bf54bd$7aee4150$83239c84@jag.gsc.nrcan.gc.ca>
To: <www-html-editor@w3.org>
Hi,
Previously, I sent a comment to dsr@w3.org instead of to this address. Perhaps you are one and the same. The first comment is attached below.  Here's another one.

On this page:
    http://www.w3.org/TR/html401/struct/objects.html#edef-AREA

It states:
  "Coordinates are relative to the top, left corner of the object. All values are lengths. All values are separated by commas"
However, it doesn't say if the (x,y) are 0-based or 1-based. Is the top left corner (0,0) or (1,1)?  I'm guessing (0,0), but I'm a technical person. Others might think (1,1).

Also it says "all values are lengths". Surely the (x,y) are not "lengths"? A length doesn't have the concept of a reference point like (0,0). The (x,y) are "co-ordinates", rather than "lengths".  But you don't have "co-ordinate" as a basic element type - perhaps there should be such a type.  This distinction is akin to the difference between a scalar (speed) and a vector (velocity) quantity.

John A. Grant
Radiation Geophysics Section
Geological Survey of Canada
http://gamma.gsc.nrcan.gc.ca

Hi,
This page:
    http://www.w3.org/TR/REC-html40/

has a date of "December 25, 1999" at the top.

But near the bottom, it says:
"The HTML 4.0 specification has been superseded by the 24 December 1999 HTML 4.01 Recommendation

Perhaps the dates need to be fixed? Just swap them and it will be ok :)

Also, I found the April 1998 -> December 1999 changes for 4.01:
    http://www.w3.org/TR/html401/appendix/changes.html#h-A.1

but I couldn't find anything that detailed the changes between December 4.0 and December 4.01. I'm interested in the changes that were made in -1 days. No seriously, I am.

Thanks.
Received on Saturday, 1 January 2000 20:06:34 GMT

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