Page 15 - MATLAB Recipes for Earth Sciences

1.3 Types of Data 5

Cyclotella ocellata 1. Talc
C. meneghiniana 2. Gypsum
C. ambigua 3. Calcite
C. agassizensis 4. Flurite
Aulacoseira granulata 5. Apatite
A. granulata var. curvata 6. Orthoclase
A. italica 7. Quartz
Epithemia zebra 8. Topaz
E. sorex 9. Corundum
Thalassioseira faurii 10. Diamond

a b

2.5 4.0 7.0 -0.5 +2.0 +4.0
01234567 -3 -2 -1 01234

c d

N
27
30 50 82.5%
25
28
0 25 50 75 100% 30
31 33
e f

N

45°
N
70°
W E W E

S
110°

S
g

Fig. 1.3 Types of data in earth sciences. a Nominal data, b ordinal data, c ratio data,
d interval data, e closed data, f spatial data and g directional data. For explanation see text.
All data types are described in the book except for directional data since there are better tools
to analyze such data in earth sciences than MATLAB.