Charts
Charts provides simple and fast way to create chart pictures. You just construct properly URL parameters and get ready picture. Under cover all charts are drawn with Apache Charts library.
Line Chart
Line chart is built via next URL:
/pub/chart?x=item1,item2,item3&y=100,200,300
where:
- x - comma separated x-axis items;
- y - comma separated y-axis values respectively.
Also there are some additional parameters:
- x_type - type of x-axis items. See possible parameters. Default is
category. - y_type - type of y-axis items. See possible parameters. Default is
value.
Bar Chart
Bar chart is built via next URL:
/pub/chart?x=item1,item2,item3&y=100,200,300&type=bar
Options are the same as at Line Chart.
Pie Chart
Pie chart is built via next URL:
/pub/pie?x=item1,item2,item3&y=100,200,300
where:
- x - comma separated names of pie parts;
- y - comma separated values of pie parts.
Also there are some additional parameters:
- legend - show pie legend. Default is
true. - label - show pie labels. Default is
true. - radius - radius in percents of pie. There are inner and outer radius. Type them comma separated. For example,
radius=10,40will draw a ring with inner radius 10% and outer 40%.
Custom Chart
If you want to draw fully customized chart, you can provide chart config with 3 ways. See config option reference and examples at Apache Charts page.
/pub/chart?url=<URL of config>
where url is web-endpoint which returns JSON config.
/pub/chart?query_string=<url-encoded-config>
where query_string is config object formed as form-data query string object.
/pub/chart?json=<url-encoded-json>
where json is url-encoded JSON object.