Code 121 - Coded Data Field:
Cartographic materials -
Physical attributes (NR)
Indicators: blank
Subfield codes
$a Cartographic Material Coded Data: Physical attributes (General) (NR)
$a/0 Physical dimension
a = 2dimensional
b = 3dimensional
$a/1-2 Primary cartographic image
a = manually and plotted
b = photographically
c = by computer
d = by active remote sensing techniques
e = by passive remote sensing techniques
Radar remote sensing image is coded: d#
$a/3-4 Physical medium
aa = paper
ab = wood
ac = stone
ad = metal
ae = synthetics (e.g. plastics, vinyl)
af = skin (e.g. parchment, vellum)
ag = textile including manmade fibre textiles (e.g. silk, cloth,
nylon)
ah = magnetic storage medium computer compatible
ai = magnetic storage medium not computer compatible
aj = tracing paper
ak = cardboard
ap = plaster
au = unknown
az = other nonphotographic medium
Photographic medium:
ba = transparent or opaque flexible base positive
bb = transparent or opaque flexible base negative
bc = transparent or opaque nonflexible base positive
bd = transparent or opaque nonflexible base negative
bz = other photographic medium
$a/5 Creation technique
a = manuscript
b = printing
c = photocopying
d = microphotography
u = unknown
y = the cartographic item is not a final product but is on a
preproduction medium as specified in character positions 34,
Physical medium
z = other
$a/6 Form of reproduction
a = by hand
b = printed
c = photography
d = transfer line print (e.g., Xerox, blueprints, ozalid)
y = not a reproduction
$a/7 Geodetic adjustment
a = no adjustment
b = adjusted but without grid system
c = adjusted with grid system
x = not applicable
$a/8 Physical form of publication
a = single
b = in parts
c = atlas including looseleaf published atlas
d = as a separate supplement to a journal, monograph, etc.
e = bound into a journal, monograph, etc.
z = other
$b Aerial Photography and Remote Sensing Coded Data: Physical Attributes
$b/0 Altitude of Sensor
a = terrestrial
b = aerial
c = space
$b/1 Attitude of sensor
a = low oblique
b = high oblique
c = vertical
$b/2-3 Spectral bands
01 to 99 = number of bands
xx = not applicable
$b/4 Quality of image
a = poor
b = fair
c = good
d = very good
$b/5 Cloud cover
1 = 1/8 cover
2 = 2/8 cover
3 = 3/8 cover
4 = 4/8 cover
5 = 5/8 cover
6 = 6/8 cover
7 = 7/8 cover
8 = completely covered by clouds
$b/6-7 Mean value of ground resolution
A twocharacter code indicates the mean value of the ground resolution.
Character position 6 carries either the numeric mean value for the
resolution or an indication that it is less than 1 centimetre or greater
than 9 kilometres. Character position 7 carries a code for the metric unit
used. Applicable only to remote sensing.
$b/6 Mean ground resolution values
= less than 1 centimetre
19 = numeric value
+ = greater than 9 kilometres
x = not applicable
$b/7 Metric unit codes
c = centimetres
i = decimetres
m = metres
d = decametres
h = hectametres
k = kilometres
x = not applicable