Map's original creator with new layout (8)

I believe the answer is:

mercator

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'map's original creator with new layout' is the definition.
I can't judge whether this defines the answer.

'map's original creator with new layout' is the wordplay.
'original' suggests taking the first letters.
'with new layout' indicates an anagram.
The first letter of 'maps' is 'm'.
'creator' anagrammed gives 'ercator'.
'm'+'ercator'='MERCATOR'

Can you help me to learn more?

(Other definitions for mercator that I've seen before include "Flemish geographer and cartographer" , "Flemish mapmaker, giving name to a projection" , "Deviser of projection" , "Projectionist" , "Projector" .)

I've seen this clue in The Telegraph.

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