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Pixel Attribute Editor

Command: Editors > Pixel Attribute Editor

The Pixel Attribute Editor is a tool which allows you to edit the pixel attributes of a dataset. Each pixel can have up to four attributes (integer numbers between from 0 to 127) which are organized in 4 layers:

The editor reflects the four layers by showing four numerical tab sheets. Further, each layer can be displayed as an image. The editor provides the following options:
  • Editing of individual pixel attributes
  • Adjusting all attributes at once
  • Editing the attributes of selected pixels
  • Reorganization of attributes
  • Defining or changing the attribute names
  • Creating pixel masks from the attributes

In order to keep track of the attributes in larger datasets, the attribute editor shows the current distribution of the pixel attributes in a histogram.

The commands of the pixel attribute editor:

Dec/Inc
 These two buttons decrement or increment the attribute numbers of the corresponding objects by one. If the new attribute number exceeds the limits of the attribute numbers (0 or 127) the attribute number of the corresponding object is left unchanged. This command can be used to change either selected data, marked data, or all data.
Set attribute
 Klicking this button sets the attributes of the corresponding objects to the value selected in the box at the left of the button. This command can be used to change either selected data, marked data, or all data.
Remap Attribute
 This command replaces one attribute number by another attribute number.
Purify Attributes
 This command changes the attribute numbers in a way that no gaps are in the attribute assignment.
Create Masks
 This command creates pixel masks from the currently selected attribute layer. Each attribute is copied to a corresponding mask.
Undo
 This command restores the attributes to the state when opening the attribute editor or to the state when the Apply button was pressed.
Apply
 After clicking the Apply button, the current attribute assignment is copied to the dataset.

Editing attributes individually: just enter the attribute numbers in the grid. After pressing the ENTER key the cursor advances to the next line automatically, thus allowing to conveniently enter subsequent attributes.