shrug-l: Simple and interesting question - never thought about it

Sykes, John John.Sykes at dep.state.fl.us
Mon Dec 16 12:03:33 EST 2019


The scale is usually referenced to the center of the map (I don’t have any around anymore, but I think the USGS Topos say so on them).  However, the issue of the scale depends on the projection you are using and, I am pretty sure, the geoid you are using.

  ̶ John

From: SHRUG-L <shrug-l-bounces at lists.dep.state.fl.us> On Behalf Of Tan, Yurong (OIG)
Sent: Monday, December 16, 2019 11:28 AM
To: shrug-l at lists.dep.state.fl.us
Subject: shrug-l: Simple and interesting question - never thought about it

Hello,
Greetings!
When we make a map, we add a graphical scale bar as a measurement/indicator of linear distances. We also know the distance is not the same as it goes from south to the north. My question is where the scale bar is precisely referenced to? The center of the map or somewhere?
Thanks,
Yurong

Yurong Tan, Ph.D., GISP
Program & Management Analyst
Office of Healthcare Inspection
VA Office of Inspector General
(352) 337-2375 (office)
(352) 514-3907 (cell)

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