Length Expression
New in V2
The LengthExpression class is new in VRS v2, and was designed as a means for handling unknown sequence content with known length.
A length expression is used to represent molecular sequences with known length but unknown sequence content, typically as determined by molecular weight assays (e.g. gel electrophoresis).
Definition and Information Model
Draft
May change significantly in future releases. See Maturity Model.
Computational Definition
A sequence expressed only by its length.
GA4GH Digest
Prefix |
Inherent |
|---|---|
None |
[‘length’, ‘type’] |
Information Model
Some LengthExpression attributes are inherited from Sequence Expression.
Field |
Flags |
Type |
Limits |
Description |
|---|---|---|---|---|
id |
string |
0..1 |
The ‘logical’ identifier of the Entity in the system of record, e.g. a UUID. This ‘id’ is unique within a given system, but may or may not be globally unique outside the system. It is used within a system to reference an object from another. |
|
type |
string |
1..1 |
MUST be “LengthExpression” |
|
name |
string |
0..1 |
A primary name for the entity. |
|
description |
string |
0..1 |
A free-text description of the Entity. |
|
aliases |
⋮ | string |
0..m |
Alternative name(s) for the Entity. |
extensions |
⋮ | 0..m |
A list of extensions to the Entity, that allow for capture of information not directly supported by elements defined in the model. |
|
length |
Range | integer |
0..1 |
The length of the sequence. |
Inherits: Sequence Expression
Example
{
"type": "LengthExpression",
"length": 20000
}