Dear All,
I tried to build a distance matrix. The following example is using dis fucntion:
a<- 1:100
grid <- as.matrix(expand.grid(a,a))
dis<-as.matrix(dist(grid))
This can create a 10000 x 10000 distance matrix, and the object size is about
764Mb. However, the actual usage of this operation is almost 2680Mb. In a 4G
memory, 32 bit OS machine, this almost top the memory limit. Is there anyway
to build a distance matrix without using that much memory (I hope just use
764Mb)?
Thank you very much!
SC
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