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2007 Aug 08
3
issues with index for table with over 18 million records
I have a MySQL table with over 18 million records in it. We are
indexing about 10 fields in this table with ferret.
I am having problems with the initial building of the index. I created
a rake task to run the "Model.rebuild_index" command in the background.
That process ran fine for about 2.5 days before it just suddenly
stopped. The log/ferret_index.log file says it got to about
2010 Oct 20
2
histograms resulting from call to soil.texture
...n a region called 'upstream' or 'downstream'. I'm
curious if there is a way to somehow extract counts of the number of points
(red points and blue points) falling within each classification (e.g. silty
loam, sandy clay, etc.)?
Eric
soil.dat<-read.table(textConnection("Field_Num Region Region_Num Region_Sym
Region_Col Date Location Location_Num sand silt clay
1 US 1 1 4 6/3/1999 Surface 1 26.25 52.5 21.25
1 US 1 1 4 8/8/2000 Surface 1 27.5 52.5 20
1 US 1 1 4 8/8/2000 One_Foot 2 27.5 50 22.5
1 US 1 1 4 8/8/2000 Two_Foot 3 80 20 0
1 US 1 1 4 8/8/2000 Three_Foot 4 67.5 22.5 1...