function getRandomData(ordinal = false) {

    function getRandomLabel(){
      var messages =["Acacia","Agate","Airmont","Aitkens","Aladdin","Alberta","Alcolu","Alder Poca","Alderwood","Alfredo","Aliceton","Alief","Allendale","Almador","Alpine Ridge","Alta","Altair","Alton Bay","Alviso","Anchorage","Anchor Creek","Andrews Lake","Aneroid Lake","Anvik","Apalachia","Apollo","Apple Glenn","Argus SR","Aries","Arrandale","Aruba","Ashland","Aspen Cabrillo","Aspen Drake","Aspen Hill","Atlanta","Atlantis","Attla","Atwood","Auburndale","Aubrey Isle","Augsburg","Aurora","Avalon","Averill","Avoton","Azalia","Bad Axe","Bad Axe 2","Baker Bay","Balboa","Bali","Bali","Baldry Mt.","Bandera","Bangor","Banias","Banister","Bar Harbor","Barnroof Point","Bartman","Barton Hills","Bartonville","Batman","Batman's Revenge","Baton Rouge","Battle Lake","Baxter Peak","Bayfield","Baytown","Bay Trail","Bear Canyon","Bearlake","Bear Point","Bear Ridge","Beartooth Pass","Bearup Lake","Beckton","Bellefontaine","Bensley","Berg Lake","Berryville","Bigby","Bighorn Peak","Big Lake","Big Laurel","Big Sur","Billings","Bimini","Birchwood","Bisbee","Blackford","Black Canyon","Black Canyon-2","Black Creek","Black Pine","Black Rapids","Bloomfield","Blue Hills","Blue Mountain","Bluff Creek","Boazman","Bobcat Peak","Boiler Bay","Bolton","Bonanza","Bonetrail","Bonham","Bonita","Bonnell","Bordenville","Boston","Boulder Creek","Boxboro","Bozeman","Braiden Creek","Braidwood","Brakefield Bend","Brandon","Breeds Hill","Bretona","Brickland","Bridge Creek","Briertown","Broadwater","Broadwell","Bromolow","Brookdale","Brownsville","Brownsville-2","Bryson","Buckeye","Buckner","Buffalo Creek","Buffalo Flat","Bull Mountain","Bulverde","Burrage","Byfield","Byfield Lite","Byrd","Byrd II","Cabot","Cactus Ridge","Caldwell","Calexico","Calexico 2","Calistoga","Callahan","Calpella","Camino","Caneland","Canmore","Cannonlake","Cannonville","Canoe Creek","Canoe Lake","Canoe Pass","Canterwood","Canterwood-ES","Cantiga","Canyon Peak","Cape Cod","Capulet","Carbonado","Cariboo River","Carlow","Carmack","Carmel","Carretta","Cascades","Castine","Castle Point","Caswell","Cave Creek","Cayman","Cayman 2","Cedarview","Cedar Cove","Cedar Mill","Cedar Trail","Centerton","Chattanooga","Cherry Creek","Cherryville","Chevelon","Chief River","Chilito","Chilito 2","Chisholm Trail","Chivano","Cibolo","Clackamas","Claremont","Clarkdale","Clarksboro","Clarksfield","Clarkville","Clear Bay","Clear Fork","Clearwater","Clems Cove","Clovertown","Cloverview","Clover Trail","Coconut Creek","Coffee Lake","Cold Lake","Colleyville","Colusa","Comanche Creek","Condor Peak","Conroe","Cooper River","Coos Bay","Coppermine","Copper Pass","Copper Pond","Copper River","Cordova","Corner Field","Corsair","Cortez","Coryville","Cotulla","Cougar Canyon","Cougar Point","Coupeville","Covington","Coyanosa","Cranberry Lake","Cranford","Creede","Crestline","Crow Point","Crown Bay","Crown Beach","Crown Pass","Crystal Forest","Cube Cove","Culver City","Culver City 2","Cumberland","Cypress","Dakota","Dalhart","Dana Point","Danbury","Dandale","Dayville","Decathlete","Deerfield","Deer Flat","Dempsey","Denali","Dermot","Deschutes","Devil's Canyon","Dewey Beach","Diamond Lake","Diamondville","Dimona","Dixon","Dodson","Dothan","Double Barrow","Doug Lake","Dover","Dowling-T","Downey","Dragontail Peak","Drake","Driskill-T","Dry Fork","Dublin","Dunes Beach","Dunellen","Dunnington","Eaglelake","Eagle Ridge","East Fork","Eastern Point","Easton","Eatonville","Eb Lake","Echo Peak","Eden Prairie","Eklo","Ekron","Eldridge","Elmcrest","Emerald Bay","Emerald Lake","Emerald Lake 2","Endeavor","Englewood","Entrada","Ephraim","Eva Cove","Evans Peak","Everson","Fairbanks","Fair Oaks","Fanwood","Fayetteville","Fiji","Flaxton","Fly Creek","Forest Lake","Fort Sumter","Fortville","Foster","Foxhollow","Foxton","Fox Cove","Free Town","Frostburg","Gainestown","Gainesville","Gallatin","Gallaway","Gamla","Gardendale","Garden Island","Garlow","Gasper","Gaston","Geneseo","Gesher","Gilgal","Gilo","Glen Brook","Glen Ridge","Glenwood","Glidewell","Glyndon","Golan","Grand County","Granite Bay","Grantley-EP","Grantsdale","Green Fountain","Greencreek","Grizzly Pass","Grosse Point","Groveland","Guardfish","Gulftown","Hammonton","Hanksville","Hanlan Creek","Harpertown","Hartwell","Haswell","Havendale","Havre","Hawley Creek","Hayden Valley","Hazleton","Hendrixx","Hillel","Hondo","Houlton Legacy","Huron River","Ibex Peak","Iron Falls","Ironlake","Iron Pass","Iron Pond","Irwindale","Ivy Bridge","Jaketown","Jackson","Ivytown","Jasper Forest","Jayhawk","Jefferson Pass","Johannesburg","Johnstown","Jones Beach","Jordan Creek","Juneau","Kaby Lake","Katmai","Kauai","Kawela","Kaylo","Kedron","Keifer","Kenai","Kenosha Pass","Kentsfield","Kevet","Kikayon","King Crest","Kings Creek","Kingsport 3","Kinnereth","Kinston","Kirkwood","Kittson","Klamath","Knights Corner","Knights Ferry","Knights Landing","Knoll Creek","Kyrene","L52A","L62A","L63A","L63B","L73A","L74A","L84A","La Crosse","LaGrande","La Mesa","Lakeport","Langwell","Larrabee","Larson Creek","Lavon","Layton","Lewisville","Lewisburg","Light Peak","Light Ridge","Lincoln Crest","Lincroft","Lindenhurst","Little Falls","Little Falls 2","Little River","Liven Good","Lizard Head Pass","Long Cove","Lunaville","Luxemburg","Lyndonville","Lynnfield","MacKenzie","Madison","Maho Bay","Maple Crest","Marathon","Marblehead","Marlinspike","Mars","Marshalltown","Matanzas","Maywood","McCaslin","McCreary","McKinley","Medfield","Mendocino","Menlow","Merced","Mercury","Merom","Merrifield","Millbrook","Millington","Millville","Moab","Mobile Bay","Monahans","Montara","Montecito","Montevina","Montpelier","Montvale","Moorestown","Morgan Hill","Morrison","Mount Prospect","Mount Union DVI","Mount Washington","Mukilteo","Napa","Natoma","Navy Pier","Nehalem","Neptune","Newberry Lake","Niantic","Nine Mile","Ninja","Nineveh","Nocona","Northwood","Novarupta","Oak Trail","Odem","Ophir","Oplin","Orchid Island","Orion","Paint Creek","Palm Canyon","Panther Point","Patsburg","Paxville","Pellston","Pendleton","Penryn","Penwell","Petrof Bay-T","Picket Post","Piketon","Pilot Point","Pilot Point-T","Pine Trail","Pineview","Placer","Plato","Pleiades","Plumas","Plum Creek","Plum Island","Polar","Polaris","Pondicherry","Portville","Postville","Postville Refresh","Potomac","Poulsbo","Poulson","Powerville","Prague","Prescott","Presler","Prestonia","Puget Island","Purley","Queens Bay","Radio Springs","Ralston Peak","Ramsdale","Rapid City","Red Ridge","Redwater","Red Rock Canyon","Reidland","Rexburg","Richford","Riggins-T","Rimon","Rio Vista","River Trail","Robson","Rochester","Rock Creek","Rock Harbor","Rock Lake","Rockwell","Romley","Rosepoint","Rose Hill","Salt Creek","Saltwell","San Clemente","Sandusky","Sandy Bridge","Sandy Canal","Santa Rosa","Saturn","Saturn II","Scanlon Bay","Sea Breeze","Seaburg","Seacliff Trail","Seattle","Shady Cove","Sharkey","Shark Bay","Sheepshead Bay","Shell Bay","Shelter Island","Shelton","Shiloh","Shirley Peak","Shoal Creek","Sibley","Sierra Grande","Siler","Silvermont","Silver Reef","Silverthorne","Silvervale","Skulltrail","Skylake","Smackover 2","Smithfield","Snow Hill","Soda Creek","Sodaville","SoFIA","Solano","Sonoma","Sorrento","Sossaman","South Bend","South Lake","Spring Fountain","Spring Meadow","Springdale","Stealey","Stebbins 2","Stellarton","Stoakley","Stoneville","Stonylake","Stormville [59]","Stoutland","Strawberry Mountain","Sugar Bay","Sunnymead","Sunrise Lake","Tabor","Tabor II","Tabor 3","Tahiti","Tanacross","Tanglewood","Tanner","Tappen","Taylorsville","Tehama","Tejas","Tekoa","Thete","Thor","Thorsby","Thurley","Tiger Point","Tigerton","Tillamook","Timber Creek","Timna","Tolapai","Tonga","Topcliff","Triton","Truland","Trumbull","Tualatin","Tukwila","Tulloch","Tulsa","Tunnel Creek","Tunnel Mountain","Tumwater","Tupelo","Twin Castle","Twinville","Tylersburg","Tyax","Union Peak","Urbanna","Val Vista","Valley Island","Valleyview","Vancouver","Vanderpool","Vanguard","Victor Island","Vidalia","Villanova","Waimea Bay","Walnut Grove","Warm River","Warm Springs","Washington Pass","Wellsburg","West Branch","Westmere","Weybridge","Whale Cove","Whitefield","Whitesburg","White Salmon","Whitmore Lake","Whitney","Whitney Point","Wichita","Wildwood Trail","Wilkins Peak","Willamette","Willapa Bay","Willowbrook","Willow Springs","Willow Springs 2","Windigo","Windmill","Winnipeg","Winterset","Winter Park","Wolfdale","Woodcrest","Woodinville","Woodridge","Woodruff","Woodsworth","Wyloway","Yamhill","Yampai","Yonah","Yorkfield","Zanesville","Zappa","Zellwood","Zion","Zoar"];
      
	    return messages[Math.floor(Math.random() * messages.length)] + " - ";
    }
  
    const NGROUPS = 4,
        MAXLINES = 12,
        MAXSEGMENTS = 12,
        MAXCATEGORIES = 12,
        MINTIME = new Date(2013,2,21);

    const nCategories = Math.ceil(Math.random()*MAXCATEGORIES),
        categoryLabels = [ 'Agena','Barcelona','Callisto','Deneb','Geneva' ] ;

    return [...Array(NGROUPS).keys()].map(i => ({
        group: getRandomLabel() + (i+1),
        data: getGroupData()
    }));

    //

    function getGroupData() {

        return [...Array(Math.ceil(Math.random()*MAXLINES)).keys()].map(i => ({
            label: getRandomLabel() + (i+1),
            data: getSegmentsData()
        }));

        //

        function getSegmentsData() {
            const nSegments = Math.ceil(Math.random()*MAXSEGMENTS),
                segMaxLength = Math.round(((new Date())-MINTIME)/nSegments);
            let runLength = MINTIME;

            return [...Array(nSegments).keys()].map(i => {
                const tDivide = [Math.random(), Math.random()].sort(),
                    start = new Date(runLength.getTime() + tDivide[0]*segMaxLength),
                    end = new Date(runLength.getTime() + tDivide[1]*segMaxLength);

                runLength = new Date(runLength.getTime() + segMaxLength);

                return {
                    timeRange: [start, end],
                    val: ordinal ? categoryLabels[Math.ceil(Math.random()*nCategories)] : Math.random()
                    //labelVal: is optional - only displayed in the labels
                };
            });

        }
    }
}