rGoodData package provides interface to GoodData API. With it you can load report data in the raw format.

Here is a short example:

# Setup the required environment variables
Sys.setenv(GOODDATA_DOMAIN="https://gooddata.com")
Sys.setenv(GOODDATA_PROJECT="project-id")
Sys.setenv(GOODDATA_USER="user-name")
Sys.setenv(GOODDATA_PASSWORD="user-password")
library(rGoodData)
library(data.table)
# get data for a given report object-iddef.obj<- getLastDefinition(1213086)
uri<- getReportRawUri(def.obj)
dt<- getReportData(uri)