safety-results-over-time/src/callbacks/onInit/cleanData.js

Chart showing population averages for lab measures, vital signs and other related measures during the course of a clinical trial.

export default function cleanData() {
    //Remove missing and non-numeric data.
    const preclean = this.raw_data,
        clean = this.raw_data.filter(d => /^-?[0-9.]+$/.test(d[this.config.value_col])),
        nPreclean = preclean.length,
        nClean = clean.length,
        nRemoved = nPreclean - nClean;

    //Warn user of removed records.
    if (nRemoved > 0)
        console.warn(
            `${nRemoved} missing or non-numeric result${
                nRemoved > 1 ? 's have' : ' has'
            } been removed.`
        );
    this.initial_data = clean;
    this.raw_data = clean;
}