[gradsusr] convert world coordinate distance to real distance (km)
HARVEY, PHILIP O NH-03 USAF AFMC 412 OSS/OSW
philip.harvey.1 at us.af.mil
Tue Nov 1 10:32:20 EDT 2016
See Ed Williams' Aviation Formulary at http://williams.best.vwh.net/avform.htm for great circle distance, etc formulas. The formula you desire is only requires 1 line and can easily be written into a function.
From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of wendi harjupa
Sent: Tuesday, November 01, 2016 2:01 AM
To: GrADS Users Forum <gradsusr at gradsusr.org>
Subject: [gradsusr] convert world coordinate distance to real distance (km)
Dear every one
I have problem with converting distance in world coordinate to distance,
I have map with
lon = 135 135.5
lat = 34.5 35
I want to set lon =135, as 0 km, and lat=34.5 as 0 km.
as we know that 1 deg is about 110 km.
Is there any function in grads that can directly convert the world coordinat distance to real distance (km)?
Please, any help would be very appreciate.
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