Working with Tree Map Data View

Operating system requirements: iOS 5.0 or later.

Mobile device: iPad.

Description

This example describes some methods of working with a tree map data view. After starting the example the following operations are executed:

A tree map data view controller is created.
Tree map color and size legends are hidden.
Path the folder with the express report, based on which data a tree map is created, is determined.

Required Files

It is required to add the following file to the base example Displaying of Express Report:

MADimensionRoleAcceptorProtocolImpl.h/.m. Dimension type setting delegate.

Source Code

Executing the example requires to place the following code in the body of the executeExample method of the ViewController class (see the Displaying of Express Report section):

// Get express report controller
MAExpressAnalysisReportViewController *contr = (MAExpressAnalysisReportViewController *)m_controller;
// Get express report delegate
EAReportDelegateImpl *delegate = [contr delegate];
// Get tree map data source
TreeMapDataViewDataSource *treeMapDataSource = (TreeMapDataViewDataSource *)delegate.treeMapDatasource;
// Create a tree map controller
MATreeMapDataViewController *treeMapController = [[MATreeMapDataViewController alloc] initWithDataSource: treeMapDataSource];
[treeMapController setDelegate: contr];
[treeMapController setIsDataViewTitleVisible: YES];
SNString plistPath = PPLFileManager::getReportPlistPath(m_olapReport->descriptor());
NSString* correctPath = plistPath?plistPath->nsString():NULL;
if (correctPath) {
    correctPath = [correctPath stringByDeletingLastPathComponent];
    [treeMapController setPathToDirReport:correctPath];
    NSLog(@"Report folder path: %@", correctPath);
}
// Get report settings
SNDictionary sett = m_olapReport->settings();
SNDictionary treeMapSett = NULL; // Tree map settings
SNDictionary selectDict = m_olapReport->selectionDictionary();
if (sett) {
    SNID treeMap = sett->objectForKey(NStr("treemap"));
    // Get tree map settings
    treeMapSett = (treeMap?treeMap->qClass<NDictionary>():NULL);
    if (treeMapSett) {
        // Load and apply tree map settings
        [treeMapDataSource loadSettings:treeMapSett withSelection:selectDict];
        [treeMapController setXmlNameSettingFromDic:(NSDictionary *)treeMapSett->nsObject()];
        } else {
        // Set tree map settings
        [treeMapController setXmlNameSetting];
    }
}
// Refresh tree map data
[delegate controllerViewDidLoaded];
// Hide size legend
[treeMapController setIsSizeIndicator: NO];
// Hide color legend
[treeMapController setIsSetColorIndicator: NO];
// Display tree map
[self showViewControllerInFullScreen: treeMapController];

After executing the example the tree map data view is displayed. Color and size legends are hidden:

The development environment console displays the path to the folder with the express report, based on which data a tree map is created:

Report folder path: /Users/sea/Library/Application Support/iPhone Simulator/7.1/Applications/AC4804D8-C173-4008-B14D-4A2401B0B49D/Documents/repositories/910419CE79EA52E95F2F8FE76E7C24DE/OBJ21110