====== Merge Wizard ======

The Merge Wizard dialog is used to merge together several different layers into a single layer.  This does not alter any of the features in those layers, it simply copies all of them into one new layer.  This wizard is helpful when combining similar data from multiple data sources.

This dialog consists of 3 steps:  
  * Step 1 - Choose Layers to Merge
  * Step 2 - Select Which Data to Include
  * Step 3 - Save the Results

===== Video Overview =====
{{youtube>oALDuEZSrFs?large|How to use the Merge Wizard.}}


===== Step 1 - Choose the Layers to Merge =====
Step 1 of the Merge Wizard allows users to select which layers to merge.  Users must select at least 2 layers of the same type (Point, Line or Area) by selecting from the **Layer Type** select box. Once the **Layer Type** is selected, the **Layers to Merge** list box is populated with all project layers for the selected **Layer Type** and a user can select 2 or more layers to merge.  Users can hold the <ctrl> key to select multiple layers.  After selecting the layers, the user can then press the **Next** button.

If your layers have certain features that have been selected on the **Select Features** tab, you may also check the **Only merge the currently selected features on these layers** checkbox.

===== Step 2 - Select Which Data to Include =====
Step 2 of the Merge Wizard allows users to select which data to include in the output layer.  This step has an **Available Columns** list box on the left which allows users to see all columns from the input layers.  Users can use the **All** checkbox to select all, or the filter select box to only show columns from certain input layers.  Users can then select the necessary columns and press the right arrow (**-->**) button to add the colums into the **Columns to Include** list box.  Once the user has the necessary columns in the **Columns to Include** list box, they can press **Next >** to proceed to Step 3.

===== Step 3 - Save the Results =====
Like other Tools wizards, this step allows users to choose how they want the wizard results to be saved.  Users can choose to **Add to Map** and specify the desired layer name, or choose to **Output to File**.  If **Output to File** is chosen, the user must select an existing or new file to save the results into.