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Author
Topic: Vincenty's geodesy formulae (Read 3909 times)
VTwin
Hero Member
Posts: 1215
Former Turbo Pascal 3 user
Re: Vincenty's geodesy formulae
«
Reply #15 on:
September 16, 2019, 01:58:31 am »
Minor fix to better deal with commas.
«
Last Edit: September 16, 2019, 02:02:14 am by VTwin
»
Logged
“Talk is cheap. Show me the code.” -Linus Torvalds
Free Pascal Compiler 3.2.2
macOS 12.1: Lazarus 2.2.6 (64 bit Cocoa M1)
Ubuntu 18.04.3: Lazarus 2.2.6 (64 bit on VBox)
Windows 7 Pro SP1: Lazarus 2.2.6 (64 bit on VBox)
VTwin
Hero Member
Posts: 1215
Former Turbo Pascal 3 user
Re: Vincenty's geodesy formulae
«
Reply #16 on:
September 16, 2019, 03:46:13 am »
Thanks, yes that is simpler.
Code: Pascal
[Select]
[+]
[-]
const
cLegals
:
set
of
char
=
[
'+'
,
'-'
,
'.'
,
','
,
'0'
..
'9'
]
;
function
IsLegal
(
c
:
string
)
:
boolean
;
begin
result
:
=
(
Length
(
c
)
=
1
)
and
(
c
[
1
]
in
cLegals
)
;
end
;
I tried something similar and it did not compile.
Logged
“Talk is cheap. Show me the code.” -Linus Torvalds
Free Pascal Compiler 3.2.2
macOS 12.1: Lazarus 2.2.6 (64 bit Cocoa M1)
Ubuntu 18.04.3: Lazarus 2.2.6 (64 bit on VBox)
Windows 7 Pro SP1: Lazarus 2.2.6 (64 bit on VBox)
serbod
Full Member
Posts: 142
Re: Vincenty's geodesy formulae
«
Reply #17 on:
September 16, 2019, 08:47:32 am »
https://github.com/serbod/osmap/blob/master/osmapgeometry.pas
I hope, it can be useful.
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Thaddy
Hero Member
Posts: 14197
Probably until I exterminate Putin.
Re: Vincenty's geodesy formulae
«
Reply #18 on:
September 16, 2019, 09:16:19 am »
It is useful, but can use some clear optimizations. (just speed, and factoring out the lcl dependencies)
«
Last Edit: September 16, 2019, 09:18:41 am by Thaddy
»
Logged
Specialize a type, not a var.
VTwin
Hero Member
Posts: 1215
Former Turbo Pascal 3 user
Re: Vincenty's geodesy formulae
«
Reply #19 on:
September 16, 2019, 05:55:43 pm »
Quote from: serbod on September 16, 2019, 08:47:32 am
https://github.com/serbod/osmap/blob/master/osmapgeometry.pas
I hope, it can be useful.
Very nice, thanks! It may have some useful functions for me. It looks like the Vincenty code is from the same source as mine, identical variable names, etc.
«
Last Edit: September 16, 2019, 06:14:01 pm by VTwin
»
Logged
“Talk is cheap. Show me the code.” -Linus Torvalds
Free Pascal Compiler 3.2.2
macOS 12.1: Lazarus 2.2.6 (64 bit Cocoa M1)
Ubuntu 18.04.3: Lazarus 2.2.6 (64 bit on VBox)
Windows 7 Pro SP1: Lazarus 2.2.6 (64 bit on VBox)
Alexandr R
New Member
Posts: 24
Re: Vincenty's geodesy formulae
«
Reply #20 on:
May 26, 2020, 11:55:54 am »
Hi.
Look at here. True text in Russian. If you need a program (module, unit) for translating the symbolic representation of angular values into radians (or vice versa) I can provide it to you. (I'm a surveyor by profession).
Sorry, but with English I feel bad
http://www.geogr.msu.ru/cafedra/karta/docs/GOK/gok_lecture_4.pdf
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