sqlhexbin {surveyNG} | R Documentation |
Draws a scatterplot in which points are replaced by hexagons indicating the population weight in regions of the plot. Requires the "hexbin"
package from Bioconductor
sqlhexbin(formula, design, xlab = NULL, ylab = NULL, ..., chunksize = 5000)
formula |
Formula specifying the two variables to plot |
design |
sqlsurvey object |
xlab |
x-axis label |
ylab |
y-axis label |
... |
Other arguments to gplot.hexbin |
chunksize |
Number of observations to fetch at a time |
Unlike most functions for sqlsurvey
objects, this fetches all observations for the specified variables, and so would be slow over a network link.
A object of S4 class hexbin
, invisibly.
Carr, D. B. et al. (1987) Scatterplot Matrix Techniques for Large N. JASA 83, 398, 424-436.
## Not run: sqclus1<-sqlsurvey(id="dnum", fpc="fpc", weights="pw", strata="fpc", data=system.file("apiclus1.db",package="surveyNG"), table.name="clus1", key="snum") sqlhexbin(api00~api99, design=sqclus1,style="centroid")- close(sqclus1) ## End(Not run)