missing attributes in OGR NTF meridian-2 => shapefile

Fri Nov 15 05:40:11 EST 2002

Hello:

[apologies for copious appended listings and possibly OT posting]

I'm converting OS Meridian-2 NTF files to ESRI shapefile but I think 
some of the text attributes are going missing, particularly proper 
names for lines (roads).

I've appended an excerpt from an NTF file. It looks as though proper 
names (PN) are detected for POINTs (see MERIDIAN_POINT listing below) 
but not for LINEs (see MERIDIAN_LINE listing below). My reading of the 
user guide 
(http://www.ordnancesurvey.co.uk/downloads/vector/meridian/ 
Meridian_guide_3_1.pdf) suggests that proper names can occur for lines 
as well as points. Grepping for the proper name strings in the results 
of converting excerpted or full NTF files doesn't find names that 
appear in the NTF (eg, "CASTLEBANK").

One possibility is that OGR is parsing an older version of Meridian, 
implied by old user guide at OGR WWW site, and inclusion of 2 in 
Meridian-2 name??? I've submitted this message to GDAL bugzilla in case 
this is right.

Another possibility is that I'm doing something wrong, or don't 
understand the output (inc which case I'll delete the buzilla report).

thanks

Ian

=== EXCERPT FROM NTF FILE ===

01OS-EDINA-Digimap glacsianm 2002102100000130200V \0%
02Meridian_02.01 DEFAULT_02.00 19920515 
000000001%
00Meridian_02.00 20000901 00000000000%
40FC004I4 FEATURE CODE\NUMERIC FEATURE CODE\0%
40OD013A13 OSODR\ORDNANCE SURVEY OSCAR DATA REFERENCE\0%
40JN A* JUNCTION_NAME\Name Of Road Junction\0%
40LL005I5 LINE_LENGTH\Length Of Line Feature\0%
40NP002I2 NUM_PARENTS\Number Of Parent OSODRs\0%
40PO013A13 PARENT_OSODR\Parent OSODR\0%
40RT001A1 ROUNDABOUT\Roundabout Indicator\0%
40RN A* ROAD_NUM\DoT Route Number\0%
40SN A* SETTLEMENT_NAME\Settlement Name\0%
40TR001A1 TRUNK_ROAD\Trunk Road Indicator\0%
40LC006I6 LEFT COUNTY\LEFT COUNTY INDICATOR\0%
40RC006I6 RIGHT COUNTY\RIGHT COUNTY INDICATOR\0%
40LD006I6 LEFT DISTRICT\LEFT DISTRICT INDICATOR\0%
40RD006I6 RIGHT DISTRICT\RIGHT DISTRICT INDICATOR\0%
40NM A* ADMIN NAME\ADMINISTRATIVE AREA NAME\0%
40PI006I6 GLOBAL ID\ADMIN AREA GLOBAL IDENTIFIER\0%
40DA013A13 DLUA ID\DLUA IDENTIFIER\0%
40PN A* PROPER NAME\DEFINITIVE NAME\0%
40RI013A13 RAIL ID\RAILWAY IDENTIFIER\0%
40SI013A13 STATION ID\STATION IDENTIFIER\0%
40TX A* TEXT\INDEPENDENT TEXT\0%
40FA013A13 FOREST ID\FOREST IDENTIFIER\0%
40WA013A13 WATER AREA ID\AREA WATER IDENTIFIER\0%
40WI013A13 WATER LINK ID\LINEAR WATER IDENTIFIER\0%
40HT008I8 HEIGHT\DERIVED HEIGHT IN METRES\0%
...FEAT_CODE listing deleted...
...90* lines deleted...
23000002000002010000020%
21000002200040570506322 0571606292 0563606276 0548806279 0%
14000002ODO3FPHP6MY4LYVFC3004LL00262PNCASTLEBANK 
STREET\NP03POO1FPHP6MY4LYVPO1%
00O1YPGCAMVCFXXPOO1FPHNB5VQVYV0%
23000003000003010000030%
21000003200020589007483 0585207499 0%
14000003ODO3FPF6U5NE9FVFC3004LL00042NP01POO1FPF6U5NE9FV0%
23000004000004010000040%
21000004200020658406907 0657006883 0%
14000004ODO3FPFKL5UJHFVFC3004LL00028NP01POO1FPFKL5UJHFV0%
23000005000005010000050%
21000005200030796005614 0794805636 0771205639 0%
14000005ODO3FP5DVMYG0YVFC3004LL00266PNST VINCENT 
TERRACE\NP01POO1FP5DVMYG0YV0%
23000006000006010000060%
21000006200020876706271 0878406273 0%
14000006ODO3FP12BMVC9FVFC3004LL00058NP03POO1FP12BMVC9FVPOO1FP0YBMVACFVPO 
1%
00O1FP16XMV9TYV0%

=== OGRINFO MERIDIAN_LINE OUTPUT ===

Layer name: MERIDIAN_LINE
Geometry: Line String
Feature Count: 5
Extent: (255488.000000, 665614.000000) - (258784.000000, 667499.000000)
Layer SRS WKT:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.999601272],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1]]
LINE_ID: Integer (6.0)
FEAT_CODE: String (4.0)
GEOM_ID: Integer (6.0)
OSMDR: String (13.0)
ROAD_NUM: String (80.0)
TRUNK_ROAD: String (1.0)
RAIL_ID: String (13.0)
LEFT_COUNT: Integer (6.0)
RIGHT_COUN: Integer (6.0)
LEFT_DISTR: Integer (6.0)
RIGHT_DIST: Integer (6.0)
TILE_REF: String (10.0)
OGRFeature(MERIDIAN_LINE):0
LINE_ID (Integer) = 2
FEAT_CODE (String) = 3004
GEOM_ID (Integer) = 2
OSMDR (String) = (null)
ROAD_NUM (String) = (null)
TRUNK_ROAD (String) = (null)
RAIL_ID (String) = (null)
LEFT_COUNT (Integer) = (null)
RIGHT_COUN (Integer) = (null)
LEFT_DISTR (Integer) = (null)
RIGHT_DIST (Integer) = (null)
TILE_REF (String) = NS56
LINESTRING (255705 666322,255716 666292,255636 666276,255488 666279)

OGRFeature(MERIDIAN_LINE):1
LINE_ID (Integer) = 3
FEAT_CODE (String) = 3004
GEOM_ID (Integer) = 3
OSMDR (String) = (null)
ROAD_NUM (String) = (null)
TRUNK_ROAD (String) = (null)
RAIL_ID (String) = (null)
LEFT_COUNT (Integer) = (null)
RIGHT_COUN (Integer) = (null)
LEFT_DISTR (Integer) = (null)
RIGHT_DIST (Integer) = (null)
TILE_REF (String) = NS56
LINESTRING (255890 667483,255852 667499)

... features 2-4 deleted...

=== OGRINFO MERIDIAN_LINE OUTPUT ===

Layer name: MERIDIAN_POINT
Geometry: Point
Feature Count: 0
Extent: (0.000000, 0.000000) - (0.000000, 0.000000)
Layer SRS WKT:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.999601272],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1]]
POINT_ID: Integer (6.0)
GEOM_ID: Integer (6.0)
FEAT_CODE: String (4.0)
PROPER_NAM: String (80.0)
OSMDR: String (13.0)
JUNCTION_N: String (80.0)
ROUNDABOUT: String (1.0)
STATION_ID: String (13.0)
GLOBAL_ID: Integer (6.0)
ADMIN_NAME: String (80.0)
DA_DLUA_ID: String (13.0)
TILE_REF: String (10.0)

=== OGRINFO MERIDIAN_NODE OUTPUT ===

Layer name: MERIDIAN_NODE
Geometry: None
Feature Count: 0
Layer SRS WKT:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.999601272],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1]]
NODE_ID: Integer (6.0)
GEOM_ID_OF: Integer (6.0)
NUM_LINKS: Integer (4.0)
TILE_REF: String (10.0)

=== OGRINFO MERIDIAN_TEXT OUTPUT ===

Layer name: MERIDIAN_TEXT
Geometry: Point
Feature Count: 0
Extent: (0.000000, 0.000000) - (0.000000, 0.000000)
Layer SRS WKT:
PROJCS["OSGB 1936 / British National Grid",
GEOGCS["OSGB 1936",
DATUM["OSGB_1936",
SPHEROID["Airy 1830",6377563.396,299.3249646]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",49],
PARAMETER["central_meridian",-2],
PARAMETER["scale_factor",0.999601272],
PARAMETER["false_easting",400000],
PARAMETER["false_northing",-100000],
UNIT["metre",1]]
TEXT_ID: Integer (6.0)
FEAT_CODE: String (4.0)
FONT: Integer (4.0)
TEXT_HT: Real (5.1)
DIG_POSTN: Integer (1.0)
ORIENT: Real (5.1)
TEXT: String (80.0)
TEXT_HT_GR: Real (10.3)
TILE_REF: String (10.0)