BlobToSObject
Convert Between S objects and Binary Objects
Description
These functions allow one to pass any S object to Spotfire
to be stored as a property
and to convert those properties back to an S object.
The binary object ("blob") will be unintelligible to Spotfire
but is useful for caching information needed in a future call
to a data function.
Usage
BlobToSObject(blob)
SObjectToBlob(object)
Arguments
| object |
any S object.
|
| blob |
a binary object created by SObjectToBlob.
|
Details
A blob created by SObjectToBlob may be passed back from a data function to
Spotfire as a "value", stored as a document property, then passed back to another
data function. E.g., you may use a blob to store a fitted model later pass the blob
to a data function that computes predicted values based on that fitted model and
the current data.
Value
a vector of class "raw".
Note
The format of the blob depends on the S interpreter (R, S+, etc.) and
the format may change in the future. This is not intended to be a long-term
storage format, but is for communication between data functions.
Examples
fittedModel <- lm(ozone ~ radiation + temperature + wind, data=Sdatasets::air)
blob <- SObjectToBlob(fittedModel)
# Perhaps send blob back to Spotfire as a document property
# and later make it an input parameter to a data function.
z <- BlobToSObject(blob)
identical(fittedModel, z)