Syntax FACTORY_DEF RasterMergerFactory [FACTORY_NAME ] [INPUT FEATURE_TYPE [ ]* []*]* [COUNT_ATTRIBUTE ]* [ACCUMULATE_ATTRIBUTES (yes|no|none|all|one)] [LIST_NAME {}] [GROUP_BY []+]* [OUTPUT MERGED FEATURE_TYPE [ ]* []*]* Overview This factory is used to merge a collection of overlapping input raster features into a single raster feature. The factory accepts a number of input raster features, each of which has one or more bands. The bands are removed from the input features and appended to a single output raster feature. The order of the input features and the order of the bands of the input features both determine the order of the bands in the output feature. The input features may be partitioned into groups based on attribute values using the GROUP_BY clause and one raster feature is produced for each group. If the GROUP_BY clause is not specified, then all input features will be processed together and a single raster feature will be produced. The properties of each raster within a group, such as the number of rows and columns, must match for the processing to proceed successfully. Each raster within a group must also overlap identically. If the optional COUNT_ATTRIBUTE clause is given, a new attribute will be created on every output feature, containing the number of input features that were combined to form the output. If grouped, the output feature's count attribute will have the number of input features that merged within its group. If yes or all is specified for the ACCUMULATE_ATTRIBUTES clause, the attributes of each input feature are merged onto the feature being output. If grouped, the attributes of each input feature within a group are merged onto the group's output feature. If no or none is specified for the clause, no user attributes will be carried across from the input features to the output features. If one is specified for the clause, user attributes only from one input feature will be on the output feature. The optional LIST_NAME clause is used to associate attributes with incoming feature. When the output feature is created, all attributes of each feature joining the output are added as members of the specified attribute list. The index in the list corresponds to the index of the feature's geometry in the aggregate. This factory accepts only features that have raster geometries and is unaffected by raster band and/or palette sub-selection. Output Tags The RasterMergerFactory supports the following output tag. MERGED The output feature created by merging the input features.