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Posted by Ajay on June 22, 2006, 5:03 am


Does any have or know of and algorithm to convert all numeric national
grid references into Ordnance Survey grid references? I.e Converting
43870, 11480 to SU 387 148. I would be grateful for any help. Thanks.


Posted by Dominic Sexton on June 22, 2006, 5:32 am


This is a MIME message

--=_Turnpike_n7ITMZDPOmmEly$2=
Content-Type: text/plain;charset=us-ascii;format=flowed

>Does any have or know of and algorithm to convert all numeric national
>grid references into Ordnance Survey grid references? I.e Converting
>43870, 11480 to SU 387 148. I would be grateful for any help. Thanks.

All you need to do is use the info in the following table to convert
numbers to grid square ids or vice versa.

Square Easting Northing
SV 0 0
SW 100000 0
SX 200000 0
SY 300000 0
SZ 400000 0
TV 500000 0
TW 600000 0
SQ 0 100000
SR 100000 100000
SS 200000 100000
ST 300000 100000
SU 400000 100000
TQ 500000 100000
TR 600000 100000
SL 0 200000
SM 100000 200000
SN 200000 200000
SO 300000 200000
SP 400000 200000
TL 500000 200000
TM 600000 200000
SF 0 300000
SG 100000 300000
SH 200000 300000
SJ 300000 300000
SK 400000 300000
TF 500000 300000
TG 600000 300000
SA 0 400000
SB 100000 400000
SC 200000 400000
SD 300000 400000
SE 400000 400000
TA 500000 400000
NV 0 500000
NW 100000 500000
NX 200000 500000
NY 300000 500000
NZ 400000 500000
OV 500000 500000
NQ 0 600000
NR 100000 600000
NS 200000 600000
NT 300000 600000
NU 400000 600000
NL 0 700000
NM 100000 700000
NN 200000 700000
NO 300000 700000
NP 400000 700000
NF 0 800000
NG 100000 800000
NH 200000 800000
NJ 300000 800000
NK 400000 800000
NA 0 900000
NB 100000 900000
NC 200000 900000
ND 300000 900000
NE 400000 900000
HW 100000 1000000
HX 200000 1000000
HY 300000 1000000
HZ 400000 1000000
HR 100000 1100000
HS 200000 1100000
HT 300000 1100000
HU 400000 1100000
HV 0 1000000
HP 400000 1200000
HQ 0 1100000
HL 0 1200000
HM 100000 1200000
HN 200000 1200000
HO 300000 1200000

or as a CSV file:


--=_Turnpike_n7ITMZDPOmmEly$2=
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment; filename=OS100kmSquares.txt
Content-Description: OS100kmSquares.txt
Content-MD5: I9Wmyty8ezto1t2jk0ukCg==

Square,Easting,Northing
SV,0,0
SW,100000,0
SX,200000,0
SY,300000,0
SZ,400000,0
TV,500000,0
TW,600000,0
SQ,0,100000
SR,100000,100000
SS,200000,100000
ST,300000,100000
SU,400000,100000
TQ,500000,100000
TR,600000,100000
SL,0,200000
SM,100000,200000
SN,200000,200000
SO,300000,200000
SP,400000,200000
TL,500000,200000
TM,600000,200000
SF,0,300000
SG,100000,300000
SH,200000,300000
SJ,300000,300000
SK,400000,300000
TF,500000,300000
TG,600000,300000
SA,0,400000
SB,100000,400000
SC,200000,400000
SD,300000,400000
SE,400000,400000
TA,500000,400000
NV,0,500000
NW,100000,500000
NX,200000,500000
NY,300000,500000
NZ,400000,500000
OV,500000,500000
NQ,0,600000
NR,100000,600000
NS,200000,600000
NT,300000,600000
NU,400000,600000
NL,0,700000
NM,100000,700000
NN,200000,700000
NO,300000,700000
NP,400000,700000
NF,0,800000
NG,100000,800000
NH,200000,800000
NJ,300000,800000
NK,400000,800000
NA,0,900000
NB,100000,900000
NC,200000,900000
ND,300000,900000
NE,400000,900000
HW,100000,1000000
HX,200000,1000000
HY,300000,1000000
HZ,400000,1000000
HR,100000,1100000
HS,200000,1100000
HT,300000,1100000
HU,400000,1100000
HV,0,1000000
HP,400000,1200000
HQ,0,1100000
HL,0,1200000
HM,100000,1200000
HN,200000,1200000
HO,300000,1200000=

--=_Turnpike_n7ITMZDPOmmEly$2=
Content-Type: text/plain;charset=us-ascii;format=flowed



--

Dominic Sexton

--=_Turnpike_n7ITMZDPOmmEly$2=--

Posted by druidh on June 22, 2006, 8:03 am


Dominic Sexton wrote:
>> Does any have or know of and algorithm to convert all numeric national
>> grid references into Ordnance Survey grid references? I.e Converting
>> 43870, 11480 to SU 387 148. I would be grateful for any help. Thanks.
>
> All you need to do is use the info in the following table to convert
> numbers to grid square ids or vice versa.
>
Snip!

An attachment???



druidh

Posted by Dominic Sexton on June 22, 2006, 8:44 am


>Dominic Sexton wrote:
>> All you need to do is use the info in the following table to convert
>>numbers to grid square ids or vice versa.
>Snip!
>An attachment???
Apologies - I should have merged the text in.


--

Dominic Sexton

Posted by David Lee on June 22, 2006, 10:40 am


druidh wrote...
> Snip!
> An attachment???

Not exactly a large binary and a text file isn't going to be a virus risk -
so you can probably turn a blind eye to that one!

David




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