SMCE window

Standardize Class Input   

 

 

Standardize a class map.

 

Tip:

In general, it may be easier to prepare an attribute table beforehand and link it to the input class map (through the Properties of the raster map). You can then:

 

Standardization possibilities are slightly different for factors and for constraints.

Standardization of factors (benefits and costs)

Specify a column in an attribute table that matches class names to values between 0 and 1. The attribute column can still be created; values in the attribute column must be between 0 and 1.

Dialog box options:

Edit

Click the Edit button to open the linked attribute table for editing. You can for instance inspect the attribute columns to decide which column you wish to use, edit the values, or even create a new attribute column and fill it with values. When creating a new column, make sure that the column uses a value range between 0 and 1. When finished editing values in the attribute column that you wish to use, click the Refresh Attribute List button.

Refresh Attribute List

Click the Refresh Attribute List button to refresh the attribute list. If you manually edited values or manually created a new attribute column using the Edit button, you must click the Refresh Attribute List button to make the application read the new values, and/or show the newly created column in the 'Attribute between 0 and 1' drop-down list box.

Attribute between 0 and 1:

Select an attribute column (a value column with values between 0 and 1 or a boolean column) with which the map should be standardized; open the drop-down list box by clicking it. You can select one of the existing attribute columns, or you can create a new column by clicking the create button . If you create a new attribute column through the Create button, click the Edit button in this dialog box to fill the new attribute column with values (see above).

Apply Weigh Wizard

Click the Apply Weigh Wizard button to open the Weigh wizard: all class names will appear in a list, and you can insert a value for each class. You can enter any positive value and value zero: the Weigh wizard will automatically convert this to values between 0 and 1 for you. Value 0 will always be converted to 0; the largest value that you insert in the Apply Weigh Wizard will automatically obtain value 1. The Apply Weigh Wizard button is not available when the number of classes is larger than 15.

 

Tip: When a factor (a benefit or a cost) with a class domain has been standardized, the criteria tree viewer shows information about the way the factor is standardized, see the first column below.

 

  Criterion name--Std:Attr='AttributeCol' Classes in the input map are standardized by using an attribute column.

Standardization of constraints

Standardization of constraints is slightly different.

Dialog box options:

Edit

Click the Edit button to open the linked attribute table for editing. For more information, see above.

Refresh Attribute List

Click the Refresh Attribute List button to make the application read new attribute values, and/or show a newly created attribute column in the 'Attribute between 0 and 1' drop-down list box. For more information, see above.

Boolean Attribute:

Select an attribute column with the Bool domain; the class map will be standardized according to the values in the selected attribute column. You can select one of the existing attribute columns, or you can create a new column by clicking the create button . For more information, see above.

 

Tip: When a constraint with a class domain has been standardized, the criteria tree viewer shows information about the way the factor is standardized, see the first column below.

 

  Criterion name--Std:Attr='AttributeCol_bool' Classes in the input map are standardized by using an attribute column. The attribute column must use the Bool domain.

 

See also: