Georeferencing tools—ArcGIS Pro

The Georeference tab contains all the tools you need to georeference your raster datasets. The Georeference tab can be accessed from the Imagery tab as follows:

In the Contents pane, select the layer you want to georeference.
On the Imagery tab, click Georeference
to open the Georeference tab.

To access the georeferencing options, click the Imagery tab. In the Alignment group, click Georeference Options Launcher . A new window appears in which you can set default options for all your georeferencing sessions.

The Georeference modal tab has the following five groups:

Prepare
Adjust
Review
Save
Close

Prepare

The Prepare group has tools to help you set up your source raster and your target datasets.


Button	Tool	Description
	Search	Finds locations when you type an address, a place-name, or coordinate values.
	Set Spatial Reference System	Allows you to set the coordinate system of the map.
	Fit To Display	Places the raster you are georeferencing into the current display of the map extent.
	Move	Shifts the raster you are georeferencing.
	Scale	Resizes the raster you are georeferencing. You can manually choose the anchor location for scaling. On the map, at the center of the raster, hover over the anchor and press the Ctrl key. When the vertex pointer appears, drag the anchor to the desired location. You can manually scale the raster, or you can press the A key to specify the scale factor in the text boxes.
	Rotate	Rotates the raster you are georeferencing. You can manually choose the anchor location for the rotation. On the map, at the center of the raster, hover over the anchor and press the Ctrl key. When the vertex pointer appears, drag the anchor to the desired location. You can manually rotate the raster, or you can press the A key to specify the degrees in the text box.
	Flip	Flips the raster horizontally or vertically.
	Fixed Rotate	Turns the raster 90 degrees left or 90 degrees right.

Adjust

The Adjust group has tools for importing or creating control points. It also allows you to choose the transformation or reset the source raster to the default location.


Button	Tool	Description
	Auto Georeference	Automatically creates control points for the source raster against a target raster. The source raster and target raster must be relatively close in terms of geographic location, spectral resolution, and spatial resolution for the autoregistration to work.
	Import Control Points	Import the control points into the georeferencing session. If control points already exist in the control point table, you can choose to replace your existing control points as follows: Yes—Delete the existing control points and import the control points from the file. No—Do not delete the existing control points. Append the imported control points to the existing ones. Cancel—Do not import any control points.
	Add Control Points	Adds control point pairs to georeference your raster. First, click the location of the raster you want to georeference. Then, choose the corresponding location on the target.
	Transformation	Set the transformation to use. The various transformations require a minimum number of control points before you can set the transformation.
	Auto Apply	Updates the display with each control point pair that is created. You can switch this option off if you do not want the display to update after each control point you create.
	Apply	Updates the display with the current control points and transformation. This is useful when Auto Apply is switched off.
	Reset	Resets the raster to its original location.

Keyboard shortcuts

While you are georeferencing, there are several keyboard shortcuts that can help you perform your task quickly.

Keyboard shortcuts for georeferencing
Keyboard shortcut	Action
C	Override the active tool with the Explore tool.
Q	Roam.
X	Zoom out incrementally.
Z	Zoom continuously.
L	Switch the visibility of the georeferencing layer on and off.
H	Switch the visibility of the control point ScreenTip on and off.
A	Specify the value for Move, Scale, or Rotate.
Esc	Cancel a control point (while creating a control point pair).
Spacebar	Temporarily disable vector snapping (if snapping has been turned on).
F5	Refresh the control point table.

Review

The Review group has tools for quality control of your georeferencing results. You can use the Control Point Table to see the residuals of each control point. You can also select, zoom to, and delete control points.


Button	Tool	Description
	Open Control Point Table	Shows a table that contains control points and residuals.
	Select Control Point	Select and highlight a control point pair in the map display.
	Zoom To Selected Control Point	Center and zoom in to a selected control point. To zoom in closer, click this tool multiple times.
	Delete Selected Control Point	Delete the selected control point.
	Delete All	Delete all the control points. When you choose to delete all control points, you are prompted to confirm that choice as follows: Yes—Delete all the control points. No—Do not delete the control points. Cancel—Do not delete any control points.

Control Point Table

The Control Point Table and the Review group are used to check the quality of the control points. The Control Point Table provides information regarding the control point pairs that have been created. Each row represents a control point pair and lists the starting coordinates, adjusted coordinates, and residual error. The sum of the errors is presented in the root mean square (RMS) error.


Button	Tool	Description
	Import Control Points	Import the control points into the georeferencing session. If control points already exist in the control point table, you can choose to replace your existing control points as follows: Yes—Delete the existing control points and import the control points from the file. No—Do not delete the existing control points. Append the imported control points to the existing ones. Cancel—Do not import any control points.
	Export Control Points	Savs the control points to a georeferencing text file.
	Add Control Points	Adds an empty row to the table. This is useful when you want to manually type the control point coordinates. By default, this control point is unavailable. Check the Use Control Point box to activate the control point.
	Zoom To Selected	Center and zoom in to a selected control point. To zoom in closer, click this tool multiple times.
	Delete Selected	Delete the selected control point.
	Delete All	Delete all the control points. When you choose to delete all control points, you are prompted to confirm that choice as follows: Yes—Delete all the control points. No—Do not delete the control points. Cancel—Do not delete any control points.
	Degrees, Minutes, Seconds	Switches the coordinates between decimal degrees and degrees, minutes, and seconds. This option is only available when the coordinate system of the map supports degrees, minutes, and seconds.
	Show Residuals in Meters	Switches the residuals from degrees to meters. This option is only available when your residuals are shown in degrees.
	Make Selected Visible	Shows the selected control point in the table. This is useful when there are a lot of rows in your control point table and you want to see the selected control point.
	Transformation	Set the transformation to use. The various transformations require a minimum number of control points before you can set the transformation.
	Use Control Point	Switches the control point on and off in the georeferencing calculation and adjustment. Control point rows that are checked off will not be used in the adjustment of the raster and will not have the values affect the RMS error.

Save

The Save group has tools to persist the results of the transformation. You can save to the current raster, save to a new raster dataset, or save the control points as a text file.


Button	Tool	Description
	Save	Updates the current raster with the control points and transformation you specified.
	Save As New	Creates a raster dataset with the control points and transformation you specified.
	Export Control Points	Savs the control points to a georeferencing text file. Note: Saving the ArcGIS Pro project does not save the current state of a georeferencing session. Export your control points before you close the project.

Close

Since this is a modal tab, the georeferencing session remains open and has the same raster layer as the target, even when you switch tabs or the contextual layer in the Contents pane. The Close group includes the Close Georeference button , which closes the modal tab when you are finished georeferencing the current raster layer.