initial commit

public/css/vendor/plugins/chart-js/docs/general/device-pixel-ratio.md

@@ -0,0 +1,13 @@
+# Device Pixel Ratio
+
+By default the chart's canvas will use a 1:1 pixel ratio, unless the physical display has a higher pixel ratio (e.g. Retina displays).
+
+For applications where a chart will be converted to a bitmap, or printed to a higher DPI medium it can be desirable to render the chart at a higher resolution than the default.
+
+Setting `devicePixelRatio` to a value other than 1 will force the canvas size to be scaled by that amount, relative to the container size. There should be no visible difference on screen; the difference will only be visible when the image is zoomed or printed.
+
+## Configuration Options
+
+| Name | Type | Default | Description
+| ---- | ---- | ------- | -----------
+| `devicePixelRatio` | `Number` | window.devicePixelRatio | Override the window's default devicePixelRatio.