Classification and Palette editor

User Guide GeoDMS GUI - classification and palette editor

edit classes or colors

The (number of) classes, the type of classification and the colors used for each class can be edited with the classification and palette editor.

Edits made with this editor are only is use for the current session. If you want to save the edits, you need to add or edit a configuration file, see the section classification.

The editor is activated from the Map View Legend, with the pop-up menu option: Edit Palette on a layer with a classification.

columns

• BrushColor: individual colors can be edited by double-clicking on a specific color cell. A Windows color dialogue appears. The pop-up menu option for this column contains (additional to the generic table column options) the following options :
• Remove BrushColor: to remove the column from the view
• Change Brush/Pen Color: Select a color from a palette editor or set the color to fully transparent for the brush or the pen.
• Classify data item: to classify the original data item, see the class’s column.

Label: individual labels can be edited by activating the cell and typing a new label or by pressing the F2 function key and editing the current label. The pop-up menu option for this column contains the following options:

• Copy Label: to copy the label column to a new color data item, with the name of the original item, the extension Copy and a sequence number. This way label columns that cannot be edited (e.g. because read from an ODBC source) can be copied, the copy item can be edited.
• Remove Label: to remove the column from the view
• Classify original data item: to classify the original data item, see the class’s column.
• ReLabel: to relabel the contents of the label column with derived labels from the class boundaries
• Copy Table class unit: to copy the whole classification scheme. Classes: individual classes can be edited by activating the cell and typing a new class value or by pressing the F2 function key and editing the current class value. The popup menu option for this column contains the following options:
• Relative Display: to present the values as % of the total
• Remove Classes: to remove the column from the view
• Classify original data item. This option is used to classify the original data item. First, specify the number of requested classes in the #class’s text box. Next, select one of the four types of classifications that are available:
• Unique values (available for all data items with a number of unique occurrences that fits in the range of the domain unit): a class is added for each value that occurs in the data item. The number of classes is based on User Guide GeoDMS GUI 7.309 50 the number of unique occurrences. The maximum number of classes is dependent on the domain unit of the class unit.
• Equal counts (available for all data items): the occurring data items are split up into classes with, as far as possible, an equal count of occurrences in each class. The class breaks are first set to the number of sorted data elements (excluding the no data values) divided by the number of requested classes. Each class break is checked to determine whether the next data element has the same value as the data element at the break. If this is the case, the class break is increased to the next data element, until a data element is found with a new value. If this data element is not found before the next class break, the last class break is removed and the number of classes is decreased by one class
• Equal intervals (available for all items): the range of the data in a data item, or the specified range of a values unit, is split up in intervals of the same size. If no range is specified the default range for the value type of the unit is used.
• JenksFisher (natural breaks): applies the JenksFisher classification method to minimize the variance within each class.
• Logarithmic intervals (available for all items with a minimum value of zero): the range of the data in a data item or the specified range of a values unit is split up in intervals of the same size using a logarithmic distribution. If no range is specified the default range for the value type of the unit is used.