---
name: "GO::Model::Evidence"
section: "3pm"
platform: "linux"
package: "libgo-perl"
version: "0.15-10"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/GO::Model::Evidence"
---

# GO::Model::Evidence(3pm)

## NAME

```
  GO::Model::Evidence - evidence for an association
```

## SYNOPSIS

```
  my $ev_l = $association->evidence_list;
  foreach my $ev (@$ev_l) {
    print "Evidence for association %s : %s\n",
      $association->gene_product->symbol,
      $ev->code;
  }
```

## DESCRIPTION

evidence for an association

see http://www.geneontology.org/GO.evidence.html for a list of evidence codes

### code

```
  Usage   - $ev->code("IEA");
  Returns -
  Args    -
```

gets/sets the evidence code

see http://www.geneontology.org/GO.evidence.html

### seq\_acc

```
  Usage   -
  Returns -
  Args    -
```

gets/sets the sequence accesion GO::Model::Xref

ALPHA CODE  - API may change

used to set the GO::Model::Xref list from a text string. eg

```
  $ev->seq_acc("SGD:RRP41; SGDID:L0003550");
```

will actually add two GO::Model::Xref objects

This method doesn't really belong in the GO::Model::\* hierarchy as it contains parsing code. Its a minor hack mainly due to the fact that this data is still denormalized in the database.

### add\_seq\_xref

```
  Usage   -
  Returns -
  Args    -
```

equivalent to WITH column in gene\_association files, and evidence\_dbxref tables in db

### add\_pub\_xref

```
  Usage   -
  Returns -
  Args    -
```

### xref

```
  Usage   -
  Returns -
  Args    -
```

gets/sets the literature or sequence reference GO::Model::Xref

NOTE: at some point we may want to deprecate this method and persuade API client code to call

```
  $ev->literature_xref
```

instead, to make explicit the fact that this is a literature reference as opposed to a sequence reference

### xref\_list

```
  Usage   -
  Returns - GO::Model::Xref listref
  Args    -
```

returns all (sequence and literature) references

### xref

```
  Usage   -
  Returns -
  Args    -
```

deprecated - sets first pub\_xref\_list

### valid\_codes

```
  Usage   - print join("; ", GO::Model::Evidence->valid_codes);
  Returns - string array
  Args    -
```

list of valid evidence codes