creating shapefiles in R from large dataframes -

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i use shapefiles() library in r create shapefile dataframe.

the dataframe contains 300,000 rows. ddtable contains 1 attribute. shapefile has esri shape type 1 (points). neither dd nor ddtable contain missing values.

i have run convert.to.shapefile() create shapefile, process still not complete after 5 hours. when @ task manager, 3.51 gb of memory in use (out of 8 gb), , of time, 37% of cpu used.

i use windows7enterprise , r 3.1.0.

i have used shapefiles() create shapefiles of road network on 140,000 links, , creation of shapefile never took more 5 minutes.

does have idea of may going wrong?


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