Touch UI / Charts

  Line Chart

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Line Chart

The “line” chart type shows a line that plots a value as it changes over the horizontal axis. A typical use case might be plotting a value over time.

To use “line” chart type, add the keyword “line” to any “pivot-” tag, and make sure that it is separated with hyphens (-).

Data Field Tag
OrderDate pivot1-row1-date-line

The chart is using the “date” keyword, which directs the server to attempt several combinations of date groupings. The best fit group is selected and displayed to the user. An equivalent tag combination on OrderDate data field would be “pivot1-row1-year-line pivot1-row2-month”.

Simple line chart using count of orders by order date.

The data for the chart can be seen here.

Data for a simple line chart using count of orders by order date.

Clicking or hovering over a data point will reveal the value.

Clicking on a data point in the line will reveal the value.

When multiple columns or values are specified, more than one line will be drawn with a different color. It is clear that Davolio’s performance in Q1 of 1997 had declined.

Data Field Tag
OrderDate pivot1-row1-year-line pivot1-row2-quarter
EmployeeID pivot1-col1

Multiple values or columns will render as different colored lines in a line chart.

The data displays the multiple columns of data below.

The multiple columns are visible in the data .

By default, lines will be drawn straight. The lines can be curved by specifying the keyword “curve”.

Data Field Tag
OrderDate pivot1-row1-year-line pivot1-row2-quarter pivot1-curve
EmployeeID pivot1-col1

A line chart with "curve" enabled.

The line chart can also be drawn vertically. Specify “vertical” for the orientation property and the chart axes will be flipped.

Data Field Tag
OrderDate pivot1-row1-year-line pivot1-row2-quarter pivot1-orientation:"vertical"
EmployeeID pivot1-col1

A line chart that is drawn vertically.

One can enable zooming and panning on the chart by specifying the “explorer” keyword.

Data Field Tag
OrderDate pivot1-row1-year-line pivot1-row2-quarter pivot1-explorer
EmployeeID pivot1-col1

Using the scroll wheel will change the scale of the vertical axis.

The chart has a very small scale.

The chart has been zoomed in.

Clicking and dragging will pan the chart.

The chart has been panned.

Right-clicking on the chart area will reset the chart. Note that the “explorer” functionality may cause interference with the user scrolling through the page – use only when necessary.

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