Select parameters (param
) or derived quantities by index from a plan
position indicator (ppi
).
# S3 method for ppi [(x, i)
x | A |
---|---|
i | Integer. Index/indices specifying which parameters ( |
A ppi
object containing a subset of parameters (param
).
# Project the example scan as a ppi ppi <- project_as_ppi(example_scan) # This ppi contains 5 parameters (VRADH DBZH ZDR RHOHV PHIDP) ppi#> Plan position indicator (class ppi) #> #> parameters: VRADH DBZH ZDR RHOHV PHIDP #> dims: 200 x 200 pixels #># Subset ppi to one containing only the first parameter (VRADH) ppi[1]#> Plan position indicator (class ppi) #> #> parameters: VRADH #> dims: 200 x 200 pixels #># Subset ppi to one containing the first three parameters (VRADH, DBZH, ZDR) ppi[1:3]#> Plan position indicator (class ppi) #> #> parameters: VRADH DBZH ZDR #> dims: 200 x 200 pixels #># Subset ppi to one without the first 2 parameters (ZDR RHOHV PHIDP) ppi[-1:-2]#> Plan position indicator (class ppi) #> #> parameters: ZDR RHOHV PHIDP #> dims: 200 x 200 pixels #>