Gri Commands
|
12.15: The `
|
heal columns|{columns along x|y} |
heal
' command heals over gaps in either columnar or gridded
data. This is done by linear interpolation across the missing-value
gaps.
heal columns
'
Fill in missing values in x, y, z, ... columns, by linear interpolation to neighboring valid data. All gaps in the data will get replaced by a linear function of index which matches the data at the indices just before and just after the gap. For example, if the y data were like
111 3 -9 -9 -9 7 333 |
where `-9
' is the missing-value code, then they would get
replace by
111 3 4 5 6 7 333 |
Notes: (1) This is done independently for all existing columns. (2) Gaps at the start and end of the columns are not filled in.
heal grid along x
'
Scan in the x direction, filling in missing values by linear
interpolation. Since this uses the the x-grid, you must first have done
`read grid x
' or `set x grid
'.
heal grid along y
'
Scan in the y direction, filling in missing values by linear
interpolation. Since this uses the the y-grid, you must first have done
`read grid y
' or `set y grid
'.