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# Log Scale
```js chart-editor
// <block:actions:2>
const logNumbers = (num) => {
const data = [];
for (let i = 0; i < num; ++i) {
data.push(Math.ceil(Math.random() * 10.0) * Math.pow(10, Math.ceil(Math.random() * 5)));
}
return data;
};
const actions = [
{
name: 'Randomize',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data = logNumbers(chart.data.labels.length);
});
chart.update();
}
},
];
// </block:actions>
// <block:setup:1>
const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: 0, max: 100};
const labels = Utils.months({count: 7});
const data = {
labels: labels,
datasets: [
{
label: 'Dataset 1',
data: logNumbers(DATA_COUNT),
borderColor: Utils.CHART_COLORS.red,
backgroundColor: Utils.CHART_COLORS.red,
fill: false,
},
]
};
// </block:setup>
// <block:config:0>
const config = {
type: 'line',
data: data,
options: {
responsive: true,
plugins: {
title: {
display: true,
text: 'Chart.js Line Chart - Logarithmic'
}
},
scales: {
x: {
display: true,
},
y: {
display: true,
type: 'logarithmic',
}
}
},
};
// </block:config>
module.exports = {
actions: actions,
config: config,
};
```
## Docs
* [Line](../../charts/line.html)
* [Logarithmic Axis](../../axes/cartesian/logarithmic.html)
* [Data structures (`labels`)](../../general/data-structures.html)