06_canvas: Project's canvas
In rangeMapper: A platform for the study of macroecology of life history traits

Description Usage Arguments Value Note Author(s) References See Also Examples

The canvas is a regular grid of a given resolution. Each range map is overlayed onto the canvas and the results saved to project.

1 2	canvas.save(con) canvas.fetch(con)

con

An sqlite connection pointing to a valid rangeMapper project.

canvas.fetch Returns a SpatialPixelsDataFrame object.

The method canvasSave() fails if grid.size was not set and if the canvas was already constructed for the given project.

Mihai Valcu valcu@orn.mpg.de

Valcu, M., Dale, J. and Kempenaers, B. (2012) rangeMapper: A platform for the study of macroecology of life history traits. 21(9). (DOI: 10.1111/j.1466-8238.2011.00739.x)

rangeMap.save.
gridSize.save

require(rangeMapper)
wd = tempdir()
dbcon = rangeMap.start(file = "test.sqlite", overwrite = TRUE, dir = wd)
global.bbox.save(con = dbcon)
gridSize.save(dbcon, gridSize = 2)
canvas.save(dbcon)
cnv = canvas.fetch(dbcon)
summary(cnv)
plot(cnv, col = 'grey', axes = TRUE)