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47 lines
1.3 KiB
PHP
47 lines
1.3 KiB
PHP
<?php
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/**
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* Renders a bargraph
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*
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* @param string $dom_id
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* @param string $key key name of the x-axis
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* @param array $row_names key names for the data rows
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* @param array $colors colors for the data rows
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* @param array $data the data
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* @return string
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*/
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function bargraph($dom_id, $key, $row_names, $colors, $data)
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{
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$labels = [];
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foreach ($data as $dataset) {
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$labels[] = $dataset[$key];
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}
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$datasets = [];
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foreach ($row_names as $row_key => $name) {
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$values = [];
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foreach ($data as $dataset) {
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$values[] = $dataset[$row_key];
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}
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$datasets[] = [
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'label' => $name,
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'backgroundColor' => $colors[$row_key],
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'data' => $values
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];
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}
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return '<canvas id="' . $dom_id . '" style="width: 100%; height: 300px;"></canvas>
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<script type="text/javascript">
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$(function(){
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var ctx = $(\'#' . $dom_id . '\').get(0).getContext(\'2d\');
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var chart = new Chart(ctx, ' . json_encode([
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'type' => 'bar',
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'data' => [
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'labels' => $labels,
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'datasets' => $datasets
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]
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]) . ');
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});
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</script>';
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}
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