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