Description Objects from the Class Slots Extends Methods Author(s) See Also Examples
These classes and methods facilitate navigation of the NetAffx resource data base. They are R representations of the Affymetrix classes defined in NetAffxAnnotFileList.dtd. The 'show' methods for these classs indicate how objects are to be accessed; details are in the ‘Annotations with NetAffx’ vignette.
The auto-generated classes are discoverable as indicated in the example below.
Objects are created internally, by parsing XML retrieved from the local NetAffx data base or from the Affymetrix web site.
Objects have a variety of slots. To discover slot names and content
type, see the slotNames
portion of the example, below.
Class "NetAffxCompatibility"
, directly.
Class "AffyCompatible"
, by class "NetAffxCompatibility", distance 2.
'Read' methods are defined on auto-generated classes to access slot content.
Accessors are apparent from displaying the object; each line of the
display is of the form accessor: content
. To retrieve the
content of an instance object
, invoke accessor(object)
.
Some objects contains several instances of another object. These
'typed associations' are represented by the
.TypedAssociation
class, and are navigated or
subset as one would a standard R vector, e.g., using [
,
[[
. A useful paradigm for displaying all instances is
illustrated on the NetAffxResource
page.
Martin Morgan <mtmorgan@fhcrc.org>
Vignette ‘Annotations with NetAffx’. Affymetrix user login site https://www.affymetrix.com/site/login/login.affx.
NetAffxResource
for creating and managing the NetAffx
data base.
NetAffxResource
for navigating the data base.
1 2 3 4 5 6 7 8 9 10 11 | ## defined and auto-generated classes
getClass("NetAffxCompatibility", where=getNamespace("AffyCompatible"))
## slots of an auto-generated class
getSlots(getClass("AffxNetAffxAnnotFileList",
where=getNamespace("AffyCompatible")))
## Not run:
example("NetAffxrResource-class")
## End(Not run)
|
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