Type-stable map for use with the purrr package
Works like purrr::map, purrr::map_dbl and the like but ensures that the output is an image list.
map_il(...) map2_il(...) pmap_il(...)
... |
passed to map |
an image list
map2_il: Parallel map (two values)
pmap_il: Parallel map (multiple values)
Simon Barthelme
#Returns a list imsplit(boats,"x",2) %>% purrr::map(~ isoblur(.,3)) #Returns an "imlist" object imsplit(boats,"x",2) %>% map_il(~ isoblur(.,3)) #Fails if function returns an object that's not an image try(imsplit(boats,"x",2) %>% map_il(~ . > 2)) #Parallel maps map2_il(1:3,101:103,~ imshift(boats,.x,.y)) pmap_il(list(x=1:3,y=4:6,z=7:9),function(x,y,z) imfill(x,y,z))
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