6. Attribute Conventions

6.1. Attribute Category Example

For many functions of AthosGEO View and the derived software AthosGEO Blend it is makes things much easier if there is some clarity about the meaning of different attributes. This is done by assigning a specific category to each one of the attributes of a block model or sampling set. Instead of lengthy explanations, an example will be given in Table 6.1.

Table 6.1 Summarizing attributes of block model blocks

BlockId

KTons

SiO2

Al2O3

Fe2O3

CaO

LS

Geol

1

2.5

6.1

3.1

1.1

48.1

224.2

Limestone

2

3.0

4.2

2.5

1.8

52.3

329.3

Limestone

3

3.0

21.5

18.1

9.3

7.2

8.2

Marl

Total

8.5

10.9

8.2

4.2

35.1

82.1

Referring to Table 6.1, different columns all need to be handled differently during summarizing, with the results shown in the last row:

KTons
Tonnages in terms of kilotons (1000 tons) are simply added:
\(KTons_{total}=\sum_n KTons_n\)
SiO2, Al2O3, Fe2O3, CaO
Chemical compounds are summerized as tonnage weighted means:
\(CaO_{total}=\frac{\sum_n KTons_n CaO_n}{KTons_{total}}\)
LS (lime saturation)
This is a cement specific modulus that is calculated from chemical compounts:
\(LS=\frac{100 CaO}{2.8 SiO_2 + 1.18 Al_2O_3 + 0.65 Fe_2O_3}\)
For the summary row, it is recalculated from the tonnage weighted means.
Geol, BlockId
These attributes cannot be summarized and will not appear in the summary attribute set

How is is possible that AthosGEO View always “knows” the correct category for each attribute? This is achieved by strictly standardizing the names of the attributes. How attribute categories are related to summarizing operations is explained in more detail in Display Table Data in Summary Tables.

6.2. Attribute Categories

Direct
These are proportions or percentages, like well known chemical compounds, cost per ton or other values that are related to tonnage.

For summarizing, tonnage weighted means will be calculated. In AthosGEO Blend, these attributes can be used in optimization targets (product constraints).

Any attribute that is not explicitly assigned to another attribute type, by filter rule or by containing string values, will be treated as being of this type, so it is the default attribute type.

Derived
Predefined cement specific derived attributes. They are calculated from chemical compounds (if available) with a special filter. They are also treated properly during summarization and can be used in constraints in AthosGEO Blend.
Tonnage
For summarizing, tonnages will be simply added. They can also be chosen as the tonnage attribute for the tonnage weighted mean calculation of Direct attributes.
Weight
Some filters can be applied to only some fraction (percentage) of a block, which can be specified with a Weight attribute.

Example: Zone. This attribute would specify how many percent of the block are inside a specific zone.

Category
This is slightly confusing: There is indeed an attribute category named Category. They are used to classify materials, so during summary calculation Category attributes will be dropped.

Category attributes can be either numeric or strings.

Note that in the Summary View it is possible to choose a Category attribute and then “scroll” from one value to the next.

Example: A Category attribute that corresponds to geological units can be either numeric codes (which is better for some filters) or strings (which is more human readable for example in a legend). With a Summary View it is then possible to scroll through the geological units, i.e. display them one by one.

Others
Some other categories are specified for different purposes within AthosGEO View or AthosGEO Blend:
  • Coordinate

  • Angle

  • Dimension

  • Index

  • Period

  • Range

  • SpecTonnage

Note

In order to quickly check the types or categories of the different attributes within a model, the Show AttributeTypes iconshowattributetypes filter will display this information in a table.

6.3. Attributes during Import

If block models or sampling sets with attributes are read from CSV files, naming of the attributes is less strict than later on within the models. This is a convenience feature for the user.

Note that once all patterns are checked on importing an attribute name, any remaining attribute will remain unchanged and become category Direct.

Note

Attribute names must not contain spaces or other special characters. Accented characters may work, but there is no guarantee.

6.3.1. Case Conversion

Standardized names of attributes are case sensitive within the model, but not on import from CSV files. During the import, the names will be converted accordingly, like cao would be converted into CaO.

6.3.2. Alternative Attribute Names

During import, some alternative names are recognized and automatically renamed.

Example: The name Tonnage would also be recognized as meaning kilotons and would be renamed as KTons accordingly.

6.3.3. Attribute Name Patterns

In some cases, only part of the name needs to be standardized, while the user can attach some descriptive part related to a project.

Example: The attribute name Zone_<..> could become Zone_LeaseA or Zone_Reserve etc. and still be recognized as an attribute of category Weight.

6.3.4. Multi-Component Attributes

It is a special feature of ParaView that it allows attributes to have multiple components, the most typical being coordinates with X, Y and Z component. CSV or other table data formats do not support such a feature, so these attributes would be split into several component attributes with names like Coord:X, Coord:Y, Coord:Z, or else Coord:0, Coord:1, Coord:2. These two forms are equivalent in this case. Important is the colon (:) separator between attribute name and component.

6.3.5. Table of Categories and Attributes

Table 6.2 Categories and Attributes

Category

Attribute

Alternatives

Unit

Description

Direct

LOI

%

Loss on ignition

Direct

SiO2

%

Direct

Al2O3

%

Direct

Fe2O3

%

Direct

CaO

%

Direct

MgO

%

Direct

SO3

%

Direct

K2O

%

Direct

Na2O

%

Direct

TiO2

%

Direct

Mn2O3

%

Direct

P2O5

%

Direct

Cr2O3

%

Direct

Cl

%

Direct

F

%

Direct

Hg

%

Direct

TOC

%

Total organic carbon

Direct

OfferedPerc

%

Offered percentage of a block

Direct

OfferedPerc_<product>

%

Offered percent of a block for a product

Direct

TakenPerc

%

Taken percentage of a block

Direct

TakenPerc_<product>

%

Taken percentage of a block for a product

Direct

WastedPerc

%

Wasted percentage of a block

Direct

WasteRatio

%

Waste ratio for block: wasted tonnage for this block related to taken tonnage

Direct

VolFactor

volumefactor, fillingdeg*

%

Volume fraction of the block that is not air

Direct

<any other>

Derived

LS

Lime saturation

Derived

SR

Silica ratio

Derived

AR

Alumina ratio

Derived

ASR

Alkali sulfur ratio

Derived

NaEq

%

Sodium equivalent

Tonnage

KTons

tonnage

kt

kilotons = 1000 tons

Tonnage

Tons

tons

Tonnage

Tons_<product>

t/kt*

Tonnage

Offered

t/kt*

Tonnage

Offered_<product>

t/kt*

Tonnage

Taken

t/kt*

Tonnage

Taken_<product>

t/kt*

Tonnage

WastedForBlock

t/kt*

Wasted tonnage for extracted tonnage in this block

Tonnage

Wasted

waste, stripping

t/kt*

Weight

Pit

%

Percentage of block inside of pit

Weight

Pit_<..>

%

Percentage of block inside of named pit

Weight

Zone

%

Percentage of block inside of zone (delimited by a closed boundary line)

Weight

Zone_<..>

%

Percentage of block inside of named zone

Category

Code

Categorizing by numeric or named code

Category

Code_<..>

Dto. with additional name

Category

Geology

geol<..>

Geological unit

Category

Class

Like Code

Category

Class_<..>

Dto. with additional name

Category

Product

Product name

Category

Level

Block level

Category

Level_<quarry>

Block level in specific quarry

Category

Column

Block column

Category

Column_<quarry>

Block column in specific quarry

Category

Row

Block row

Category

Row_<quarry>

Block row in specific quarry

Category

Line

Like Row

Category

I

Like Column

Category

J

Like Row

Category

K

Like Level

Category

Cat

Like Code

Category

Name

Classification name

Category

Start

begin, open, first

In AthosGEO Blend for specification of blocks where to start the scheduling

Category

Force

In AthosGEO Blend for specification of blocks blocks to be taken in any case for one of the products during optimization or scheduling

Category

HoleType

hole_type, sond*meth*, meth*sond*

Classification attribute for drillholes or sampling sets

Category

HolePath

hole_path

Type of drillhole path - so far ignored and always handled like “linear”

Category

N_<..>

On reading from CSV files, all columns with strings that are not otherwise classified are getting a N_ prepended to their name and with this they are classified as Category attributes

Angle

Angle

ang*, rot*

°

Orientation of block model, counting N-E-S-W

Angle

Azimuth

°

Orientation of inclined drillhole

Angle

Dip

°

Dip angle of inclined drillhole, 90° for vertically downwards

Coordinate

Center:X

center:0, center_0, cent*x, world*x, x*world, x, east*

Block center X coordinate

Coordinate

Center:Y

center:1, center_1, cent*y, world*y, y*world, y, north

Block center Y coordinate

Coordinate

Center:Z

center:2, center_2, cent*z, world*z, z*world, z, alt

Block center Z coordinate

Coordinate

Collar:X

collar:0, collar_0, collar*x, sondage*x

Drillhole collar X coordinate

Coordinate

Collar:Y

collar:1, collar_1, collar*y, sondage*y

Drillhole collar Y coordinate

Coordinate

Collar:Z

collar:2, collar_2, collar*z, sondage*z

Drillhole collar Z coordinate

Date

Date

ISO-Format: YYYY-MM-DD

Dimension

Size:X

size:0, size_0, size*x*, dx, width

Block size in X direction

Dimension

Size:Y

size:1, size_1, size*y*, dy, length

Block size in Y direction

Dimension

Size:Z

size:2, size_2, size*z*, dz, height

Block size in Z direction

Dimension

Slope:XNeg

slope:0, slope_0, slope:xneg, slopexneg

Mining slope angle in negative X axis direction**

Dimension

Slope:XPos

slope:1, slope_1, slope:xpos, slopexpos

Mining slope angle in positive X axis direction**

Dimension

Slope:YNeg

slope:2, slope_2, slope:yneg, slopeyneg

Mining slope angle in negative Y axis direction**

Dimension

Slope:YPos

slope:3, slope_3, slope:ypos, slopeypos

Mining slope angle in positive Y axis direction**

Dimension

Pref:XNeg

pref:0, pref_0, pref:xneg, prefxneg

Mining preference in negative X axis direction**

Dimension

Pref:XPos

pref:1, pref_1, pref:xpos, prefxpos

Mining preference in positive X axis direction**

Dimension

Pref:YNeg

pref:2, pref_2, pref:yneg, prefyneg

Mining preference in negative Y axis direction**

Dimension

Pref:YPos

pref:3, pref_3, pref:ypos, prefypos

Mining preference in positive Y axis direction**

Dimension

Pref:ZNeg

pref:4, pref_4, pref:zneg, prefzneg

Mining preference in negative Z axis direction

Dimension

NumItems

numitems

In summary tables the number of summarized items (blocks etc.)

Dimension

MaxDepth

depth, max_depth

Maximum length of a drillhole

Dimension

Volume

vol, volume

Block volume that is not air

Index

BlockId

Index

Nb:XNeg

nb:0, nb_0, nb:xneg, nbxneg

Neighbor block ID in negative X axis direction**

Index

Nb:XPos

nb:1, nb_1, nb:xpos, nbxpos

Neighbor block ID in positive X axis direction**

Index

Nb:YNeg

nb:2, nb_2, nb:yneg, nbyneg

Neighbor block ID in negative Y axis direction**

Index

Nb:YPos

nb:3, nb_3, nb:ypos, nbypos

Neighbor block ID in positive Y axis direction**

Index

Nb:ZNeg

nb:4, nb_4, nb:zneg, nbzneg

Neighbor block ID in negative Z axis direction

Index

Nb:ZPos

nb:5, nb_5, nb:zpos, nbzpos

Neighbor block ID in positive Z axis direction

Name

Material

material, corr*

Material or corrective name

Name

RowType

rowtype

Row type in summary table

Name

HoleId

holeid, hole_id, dhid, dhnr, name*hole, sond*name, name*sond*

Unique ID of a drillhole

Name

SampleId

sampleid, samp*id, prob*name, name*prob*

Unique ID of a sample

Period

Period

miningperiod

Period

FirstPeriod

First period of taking tonnage from a block

Period

WastePeriod

Period where wasted tonnage was taken

Range

Depth:From

depth:0, depth_0, depth*from, schicht*von

Depth range begin of sample within a drillhole

Range

Depth:To

depth:1, depth_1, depth*to, schicht*bis

Depth range end of sample within a drillhole

SpecTonnage

Density

dens*, sg, spec*

Density or specific gravity of material

* t/kt stands for either tons or ktons (1000 tons).

** direction: negative or positive X or Y direction refers to a model with Angle of 0°. Otherwise, everything is rotated accordingly.