How does a feature merge work in FME?

How does a feature merge work in FME?

Merges the attributes and/or geometry of one set of features onto another set of features, based on matching key attribute values and expressions. View Documentation Try it Free in FME Desktop People Who Used This Transformer Also Used – See All Transformers Use the FeatureMerger in FME

What does weighted by area mean in FME?

Attributes to Average, Weighted by Areamay produce non-numeric results if some input features have zero, or no area. Assemble One Level Aggregate Type Heterogeneous Collection: the output geometry will be an IFMEAggregate.

What does many to one mean in FME?

Many to One:If multiple Left features match a single Right feature record (for example a number of addresses match to the same census data via a postal code field) this is a M:1 (many-to-one) match and produces a Joined feature for every match that occurs 10Left match 1Right: 10Joined Features output

How are features aggregated in order in FME?

Features are aggregated in the order they are received by this transformer. If the order of individual geometry parts within the resulting aggregate is important, you can first route the features through a Sorter. Feature geometries and attributes can also be deaggregated using a similar transformer, the Deaggregator. Parameters Transformer

How to merge table and shapefile in FME-geographic?

Right now my workflow is separated into two workspaces. The first one takes an Excel (applies some attribute filter) and imports everything in a database in postgresql (with sql executor). This workflow doesn’t include any spatial data.

How to use featuremerger on a Windows PC?

Filters features by test conditions to one or more output ports. Calculates statistics based on a designated attribute or set of attrib… Sorts features by a selected attribute’s value. The features leave the… Download our fully-functional FME Desktop trial, free for 30 days. No credit card necessary.

How does featuremerger calculate statistics for a feature?

Evaluates one or more tests on a feature, and routes the feature accor… Filters features by test conditions to one or more output ports. Calculates statistics based on a designated attribute or set of attrib…

Do you need to know all feature types before merging?

Although it is not a hard and fast rule, generally the Import Feature Types method is used on file-based datasets such as MicroStation DGN or AutoCAD DXF formats. The Merge Feature Type tool does not need to be aware of all of the feature types beforehand.

How to merge a feature type in Java?

Open the Feature Type dialog on an input feature type. On the Parameters tab, under General, check Merge Feature Type. Specify a Merge filter and a Filter type. The filter type can also be an Exact Match or a Regular Expression. Click OK to apply the properties to the feature type from which you initiated the Properties dialog.

Why do we use attribute joins in FME?

Firstly it has parameters to control how multiple matches are handled, as well as parameters for optimizing the database query. Secondly, it allows features to be joined without having to read the entire dataset into a workspace. FME can just query the database and select the individual records it needs.

Is there a way to connect multiple FME?

You access it like this (View > Windows > Feature Type Connections): In there select all the source feature types, select the transformer point to connect to, then click Connect: I just came across this old question and wanted to update it with a new answer.

Is there a way to connect multiple input feature types?

In FME, is there a way to connect multiple input feature types from reader and route to single transformer? In FME, is there a way to connect multiple readers to a single transformer? I’m using FME 2015 and want to clip a bunch of feature classes to a single feature, but can’t seem to find an easy way to do this.

How are dissolved polygons formed in FME software?

Dissolved polygons are formed when shared edges and interior edges between adjacent polygons are removed. The example below shows areas before and after a Dissolver transformer was used. Evaluates one or more tests on a feature, and routes the feature accor… Merges the attributes and/or geometry of one set of features onto anot…

How can I get FME to do the same thing?

I am trying to dissolve polygons that are spread out across a region. ArcMap’s ModelBuilder will dissolve these polygons into a single, multi-part feature. How can I get FME to do this same thing?

When does processing occur in a FME transformer?

Process At End (Blocking): This is the default behavior. Processing will only occur in this transformer once all input is present. Process When Group Changes (Advanced): This transformer will process input groups in order. Changes of the value of the Group By parameter on the input stream will trigger processing on the currently accumulating group.

When to merge feature types in ESRI shapefile?

Again it is not a fixed rule, but Merge Feature Type is generally used on folder-based datasets such as Esri Shapefile to ensure all feature types in a dataset are processed. Open the Feature Type dialog on an input feature type.

What happens when all layers are merged into one shapefile?

This means that when all objects from all relevant layers are merged into a single Shapefile, StatPlanet can be made to display information for selected objects simply by not putting any data in the columns that relate to other layers.

How does a linecombiner work in FME?

Evaluates one or more tests on a feature, and routes the feature accor… Filters features by test conditions to one or more output ports. Brings lines, segments, end points or vertex points of features togeth…

How to merge multiple polygons into one shapefile?

You will need a set of polygon Shapefile layers. These need to be aligned correctly to each other and merged into a single Shapefile. Shapefile simplification routines may affect the registration of individual polygons within the individual Shapefiles or the final merged shapefile.