# CHART Calibration definition files for raw or derived tables or views

namespace xsi = "http://www.w3.org/2001/XMLSchema-instance"

element calibrations {
    attribute xsi:noNamespaceSchemaLocation { "http://chart/schemas/calibration.xsd" } &

    ## Identify all spacecraft this file applies to. Wildcards allowed.
    element source {
        element scid { text }
    }* &

    ## A single named calibration function
    element calibration {
        ## Name of the calibration function as refered from the raw table field definition.
        element field { text }+ &

        ## State a linear calibration.
        (element linear {
            ## A linear calibraton may contain multiple pairs.
            element pair {
                ## Each pair has a raw value
                element raw { xsd:integer } &
                ## Each pair has a calibrated value
                element cal { xsd:double }
            }+
        } |
        ## State a polynomial calibration
        element poly {
            ## A polynomial may have multiple terms. x0 first.
            element coeff { xsd:double }+
        } |
        ## Use a named pl/SQL function for calibration.
        element plsql { text } |
        ## Use an inline SQL statement.
        element sql { text })
    }*
}