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Update 01-introduction.Rmd #710

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Update 01-introduction.Rmd #710

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Expand Up @@ -325,7 +325,7 @@ Colin Rundel addressed this issue by developing **rgeos**, an R interface to th

Another limitation of **sp** --- its restricted support for raster data --- was overcome by **raster**\index{raster}, first released in 2010 [@R-raster].
Its class system and functions support a range of raster operations as outlined in Section \@ref(raster-data).
A key feature of **raster** is its ability to work with datasets that are too large to fit into RAM (R's interface to PostGIS\index{PostGIS} supports off-disc operations on vector geographic data).
A key feature of **raster** is its ability to work with datasets that are too large to fit into RAM (R's interface to PostGIS\index{PostGIS} supports off-disk operations on vector geographic data).
**raster** also supports map algebra (see Section \@ref(map-algebra)).

In parallel with these developments of class systems and methods came the support for R as an interface to dedicated GIS software.
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