Features

Every chart that has been automatically or manually defined will display a title. This title will be composed using the row, column, and value fields and their properties that have been specified for the chart. For example, suppose we create a curved line chart on Orders page of the Northwind sample app that uses OrderDate for rows, EmployeeID for columns, and the sum of Freight for values.

The data for the chart can be seen below.

The title states that the chart shows top three “Employee Last Name”. The value is the sum of “Freight” and the rows are grouped by “Order Date”. While the title may reveal all the necessary information, the title can be better. Let’s manually specify the title by adding the following tag. Note that the tags do not need to be on any particular data field, as long as the correct pivot ID is specified. Open the Project Designer. In the Project Explorer, switch to the Controllers tab and double-click on Orders / Views / grid1 / EmployeeID data field node.

Add the highlighted tag:

Save the data field and regenerate the app. When the page comes up in your browser, navigate to the Orders page. Note that the new title has been applied.

The new title will also be displayed above the chart data.

By default, the axes do not have a title applied. One can use the “haxistitle” or “vaxistitle” properties to manually specify a title for the horizontal or vertical axis, respectively. Let’s specify the following axis titles:

The new chart will display the specified labels on each axis.

The chart data will not be changed.

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 (-).

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”.

The data for the chart can be seen here.

Clicking or hovering over a data point 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.

The data displays the multiple columns of data below.

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

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

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

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

Clicking and dragging will pan the chart.

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.