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Saturday, March 7, 2015PrintSubscribe
Column Chart Type

The “column” chart type renders multiple vertical columns for each row of data. This chart type has many use cases, such as comparing values grouped by lookup values, or showing change over time. The example below shows the number of orders received over time in the Northwind sample app.

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

Data Field Tag
EmployeeID pivot1-row1-column

A column chart showing the count of orders made by each employee.

The data for the graph is displayed below.

The data for the chart showing the count of orders made by each employee.

Hovering over or clicking on a column will reveal the data.

A tooltip is shown for each column.

If multiple values are specified for each row of data, a column will be rendered for each value in a different color.

Data Field Tag
EmployeeID pivot1-row1-column
ShipVia pivot1-col1

Multiple values will render in multiple columns in the chart.

Multiple values for each row can be seen in the data below.

The data for the chart of count of orders by employee, split by shipper.

Each row can also be displayed as a single column and stack the values on that column by using the “columnstacked” chart type.

Data Field Tag
EmployeeID pivot1-row1-columnstacked
ShipVia pivot1-col1

Stacked columns will group all values for each datarow into a single column.

Tuesday, March 3, 2015PrintSubscribe
Introduction to Charts

Every Code On Time web app comes with multiple ways of displaying your data. One way to visualize your data is with charts. See an example of charts on the Orders page of Northwind sample below.

Default data insight charts displayed for orders page of a Northwind sample app.

When a user activates the Charts presentation style, any developer-defined charts will be displayed. If none have been defined, then the application will automatically construct charts based on the data fields present in that view.

Activating Charts Presentation

Charts can be activated by clicking on the “Charts” presentation style option in the sidebar on the left hand side of the screen.

Selecting the Charts data presentation style from the sidebar.

If the device you are using is narrow or the sidebar has been disabled, you can click on the context menu button “…” in the top right corner of the screen to bring up the context menu.

Selecting the three dot context menu button in the top right corner of the screen.

Then, click on the name of the view to bring up view options.

Activating the view settings by clicking on the view name from the context menu.

Select the “Charts” data presentation style, and the view will refresh and display charts to the user.

Selecting the charts data presentation style from the view options menu.

Responsive Design

Charts offer a responsive design that will scale to fit any device, regardless of the device’s screen size. You can get a comprehensive snapshot of your data from your phone, tablet, or desktop computer. The largest screen sizes will display three columns of charts.

The largest screens and devices will show three columns of charts.

If the window is shrunk to a moderate size or the device is a tablet, two columns of charts will be shown instead.

Only two columns of charts will be shown when the device is of medium size.

Smaller devices will display one chart at a time.

Smaller devices show one chart at a a time.

If the device or window has a short height (or if your phone is rotated horizontally), then the charts will be shrunk vertically in order to fit at least one chart at a time on the screen.

Charts will shrink vertically to fit the screen size.

Sizing Charts

Charts can also be individually resized. Each chart is set to “Small” by default. This will render three columns on large screens, two columns on medium screens, and one column on small screens. If only one chart is present for the view, then that chart will always be maximum size available for the device.

The user can change the size of each chart by clicking on the three dot context menu “…” in the top right corner of the chart. Large devices will have access to “Small”, “Medium” and “Large” sizes.

User can define the size for the chart from the context menu

Select “Large” to display a chart at full width and height of the screen. “Large” charts will scale down to “Medium” size on moderately sized devices, and to “Small” if the device cannot fit medium charts.

Large charts take the full height and width of the screen.

“Medium” chart size uses two thirds of the width and height a large screen, leaving space for one small chart in each dimension.

Medium size charts will take 2/3s of the height and width of the screen.

Medium charts on a medium size device will take the full width and two thirds of the height, leaving room for one chart above or below.

Medium size charts on a medium size device will take the full width and 2/3s of the height.

Default chart sizes can also be specified by the developer at design time.

Filtering with Charts

Any filters applied to the data view will be used by the charts. Quick filter options are available for the relevant fields in the context menu of each chart.

Quick filtering options are available based on the fields that are present in the chart.

Clicking on the name of a field will open the filter panel for that field.

The filter panel for Customer Company Name has been opened.

Select several options from the panel and press “Apply” to filter. The charts will refresh with the new, filtered data.

An Orders chart that is filtered by the customer.

Child data views also derive the filter from the selected master record. The screen below shows charts giving insight to the orders from the customer “Save-a-lot Market” – Davolio seems to be the preferred employee.

Charts for orders that are specific to a customer that has been selected as the master record.

Viewing the Data Behind the Chart

Users also have the option to view the pivoted data that the chart is based on in a table. Click on the three dot context menu “…” in the top right corner of a chart. Select “Show Data” option.

The 'Show Data' option in the context menu of a chart.

The chart will be replaced by a table that shows the data. A miniature chart preview will be shown in the top left corner.

The data for the chart is displayed in a table.

Clicking on the mini chart in the top left hand corner will restore the chart. The user can also use the “Show Chart” option in the context menu.

The 'Show Chart' option will restore the chart.

Wednesday, August 27, 2014PrintSubscribe
Page Headers in Touch UI

Page headers are displayed at the top of every page to inform the user of which view or control they are currently working with. The picture below displays the page header of “Orders”, visible below the page title.

The "Orders" page header is displayed below the title bar.

In pages that display data views, the header is hidden on two conditions:

1. When the current view is the entry point to the page.

The "Customers" page header is hidden due to the fact that this view is the entry point to the page.

2. When the text of the page header matches the title of the page displayed on the menu bar at the top of the screen. For example, the child view of Employees on the Employees page in a sample Northwind app will not have a page header.

The child view does not show page header as it has the same text as the page title.

Hiding the Page Header

The header can also be hidden on a per-page basis.

Start the Project Designer. In the Project Explorer window, double-click on the Customers page.

Customers page in the Project Explorer.

Specify the following:

Property Value
Custom Style Tall

Save the page, and press Browse on the toolbar to generate the app and open the page in your default browser. Select a customer, and tap See All next to the list of orders. Note that the “Orders” page header is not displayed.

Customers page does not display any page headers.

Page Headers in Custom User Controls

The page header text for user controls is derived from the data-activator tag. By default, this tag is set to the name of the user control.

User controls show the control name as page header by default.

The header text can be specified using the data-page-header tag. For example, let’s specify the page header text for a freshly created user control. Open the user control file in Visual Studio and make the following highlighted addition:

...
<!-- 
    This section provides a sample markup for Touch UI user interface. 
-->
<div id="TestUserControl" data-app-role="page" data-activator="Button|TestUserControl" data-page-header="Custom Header">
    <div data-role="content">
        <p>
            Markup of <i>TestUserControl</i> custom user control for Touch UI.
        </p>
    </div>
</div>
...

Save the file and refresh the web page. Note that the page header text has been changed.

Custom header text has been specified for the user control page header.

The page header can be hidden by specifying “false” for the data-page-header tag. Make the following change:

...
<!-- 
    This section provides a sample markup for Touch UI user interface. 
-->
<div id="TestUserControl" data-app-role="page" data-activator="Button|TestUserControl" data-page-header="false">
    <div data-role="content">
        <p>
            Markup of <i>TestUserControl</i> custom user control for Touch UI.
        </p>
    </div>
</div>
...

Save the file and refresh. The page header will not be present.

The page header has been hidden on this user control page.