Displaying 2 results from an estimated 2 matches for "stationb".
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station
2010 May 10
3
dbSendQuery with R variables
Rhelpers:
I'd like to modify this RSQLite statement:
rs_stations<-dbSendQuery(con_stations, "select * from stations")
so that stations is actually an R variable, e.g.:
stations=c("stationA","stationB")
How would I modify the above statement to query from stations[[1]]
(aka "stationA")?
--j
2006 Mar 22
0
Time table models and querying approach
...rvices -> Runs -> Stops <- Stations
Key:
"->" denotes a one to many
Providers = Bus companies
Services = the bus number
Runs = Columns on a bus time table
Stops = Cells on a bus time table, basically a time
Stations = Rows on a bus time table
StationA 10:00 10:50 11:30
StationB 10:05 10:55 11:34
StationC 10:15 11:10 11:44
StationD 10:17 11:12 11:52
StationE 10:22 11:19 12:00
My question is to do with the model setup and how to search it since the
query is quite complex.
Model/Tables:
I was considering dropping the Stations table and making Stops
a...