Cell Type

A cell type denotes several possible cell representations in a Map or Categorical Map.

Cell Type	Domain	Cell Size	Signed	Minimum Value	Maximum Value	Default Null
1 Bit Integer	Integer 1) can represent only integer values	1 bit	No	0	1	0
Signed 8 Bit Integer	1 byte	Yes 2) can represent positive and negative values	-128	127	-128
Unsigned 8 Bit Integer	1 byte	No 3) can represent only positive values	0	255	0
Signed 16 Bit Integer	2 bytes	Yes 2)	-32768	32767	-32768
Unsigned 16 Bit Integer	2 bytes	No 3)	0	65535	0
Signed 32 Bit Integer	4 bytes	Yes 2)	-2147483648	2147483647	-2147483648
Unsigned 32 Bit Integer	4 bytes	Yes 3)	0	4294967295	0
IEEE 754 32 Bit Real4) A value represented in this format usually have only 7 significant digits	Real 5) can represent fractional and integer values	4 bytes	Yes 2)	-3.4028235*1038	3.4028235*1038	-9999

A cell type value can also be created from integral values, like Integer Value, Positive Integer Value, Non Negative Integer Value etc, and from real values, like Real Value. The mapping of numeric values and their corresponding cell type values can be seen below:

Numeric Value	Cell Type
0	1 Bit Integer
1	Signed 8 Bit Integer
2	Unsigned 8 Bit Integer
3	Signed 16 Bit Integer
4	Unsigned 16 Bit Integer
5	Signed 32 Bit Integer
6	Unsigned 32 Bit Integer
7	IEEE 754 32 Bit Real

It is worth noting that the definition of maps with cell type “1 Bit Integer” helps saving memory, but it also has a huge negative impact in performance.

GUI Editor

EGO Script

A cell type constant can be represented in a EGO Script using the following syntax:

Cell Type	Representation
1 Bit Integer	.uint1
Signed 8 Bit Integer	.int8
Unsigned 8 Bit Integer	.uint8
Signed 16 Bit Integer	.int16
Unsigned 16 Bit Integer	.uint16
Signed 32 Bit Integer	.int32
Unsigned 32 Bit Integer	.uint32
IEEE 754 32 Bit Real	.float32

Automatic Conversions

Converted from: Real Value Type, Non Negative Integer Value Type, Positive Integer Value Type and Integer Value Type.

Converted to: None.