• Overview

Histogram

Overview #

A histogram is a chart that groups numeric data into bins, displaying the bins as segmented columns. They're used to depict the distribution of a dataset: how often values fall into ranges.

Google Charts automatically chooses the number of bins for you. All bins are equal width and have a height proportional to the number of data points in the bin. In other respects, histograms are similar to column charts.

Code:

<?php
require_once "../../../load.koolreport.php";

\koolreport\widgets\google\Histogram::create(array(
    "dataSource"=>[
        ['Dinosaur', 'Length'],
        ['Acrocanthosaurus (top-spined lizard)', 12.2],
        ['Albertosaurus (Alberta lizard)', 9.1],
        ['Allosaurus (other lizard)', 12.2],
        ['Apatosaurus (deceptive lizard)', 22.9],
        ['Archaeopteryx (ancient wing)', 0.9],
        ['Argentinosaurus (Argentina lizard)', 36.6],
        ['Baryonyx (heavy claws)', 9.1],
        ['Brachiosaurus (arm lizard)', 30.5],
        ['Ceratosaurus (horned lizard)', 6.1],
        ['Coelophysis (hollow form)', 2.7],
        ['Compsognathus (elegant jaw)', 0.9],
        ['Deinonychus (terrible claw)', 2.7],
        ['Diplodocus (double beam)', 27.1],
        ['Dromicelomimus (emu mimic)', 3.4],
        ['Gallimimus (fowl mimic)', 5.5],
        ['Mamenchisaurus (Mamenchi lizard)', 21.0],
        ['Megalosaurus (big lizard)', 7.9],
        ['Microvenator (small hunter)', 1.2],
        ['Ornithomimus (bird mimic)', 4.6],
        ['Oviraptor (egg robber)', 1.5],
        ['Plateosaurus (flat lizard)', 7.9],
        ['Sauronithoides (narrow-clawed lizard)', 2.0],
        ['Seismosaurus (tremor lizard)', 45.7],
        ['Spinosaurus (spiny lizard)', 12.2],
        ['Supersaurus (super lizard)', 30.5],
        ['Tyrannosaurus (tyrant lizard)', 15.2],
        ['Ultrasaurus (ultra lizard)', 30.5],
        ['Velociraptor (swift robber)', 1.8]
    ],
    "title"=>"Lengths of dinosaurs, in meters",
    "options"=>array(
        "legend"=>["position"=>"none"]
    )
));