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what does "The X, Y coordinates given represent a rectangle 0.01 degrees on each side, centered on that X-Y location" mean

Data · 23 Feb 2020, 13:02 · 4

In the description of data, there is a line "The X, Y coordinates given represent a rectangle 0.01 degrees on each side, centered on that X-Y location." What does it mean? Does anyone have any example?

Discussion 4 answers

sellis

One degree on earth surface is approximately 111km, so 0.01 degrees is approximately 1.11km. Thus each square is approximately 1.11km x 1.11km sized. The X, Y co-ordiates represent the middle of the square. If you plot an X-Y chart with a dot for every position you'll end up with a map of southern Malawi.

24 Feb 2020, 07:35

Upvotes 0

arickuter

I am going to be a pain and do this: *rectangle. They stated the width is 0.01 degrees on either side but I presume the height is different. Their words, not mine :). And again, just here to be annoying ;)

replied to sellis24 Feb 2020, 15:59

Upvotes 0

ruu

Is the description of this data given?

24 Feb 2020, 18:41 (edited less than a minute later)

Upvotes 0

chinmay_earthlab

Thanks, @sellis, that makes some sense. If it says, 0.01 degrees on each side with X, Y being the center. Wouldn't it be 2.22KM x 2.22 KM square approximately? Also, in the original description of data, it said the tiles were divided up into 1 sq.km blocks. Not sure which one to believe now.

25 Feb 2020, 10:39

Upvotes 0

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