Import Georeferenced Images
Import an image file that includes georeferencing data embedded in the image file itself or in an associated georeferenced data file (for a example, a .wld or .ini file).
The following file formats are supported:
- TIFF (.tif) - This file format can include embedded georeference data or can be accompanied by a WLD (.wld) or INI (.ini) georeference data file.
- BMP (.bmp), GIF (.gif), JPEG (.jpg), PNG (.png) - These file types cannot include embedded georeference data; they must be accompanied by a WLD (.wld) or INI (.ini) georeference data file.
A georeference data file must be named the same as the image file for which it is providing georeference data, except with a different file extension. Note that the file extension for a WLD (.wld) file can be either .wld or:
- .bpw for a BMP file
- .gfw for a GIF file
- .jgw for a JPEG file
- .tfw for a TIFF file
To import georeferenced images using the Import pane:
- Select Import in Home > Data Exchange. The Import pane displays.
- In the Select File(s) list, select the georeferenced image(s) you want to import.
If the georeference data is contained in a separate file, you need to select to import only the image file. The associated georeference data file will be automatically imported as long as it has the same file name as the selected image file (with a different file extension) and is located in the same folder.
- In the Settings section of the Import pane, select the appropriate unit type for the georeferenced images: Global (degrees), Grid (meter), Grid (Intl. foot), or Grid (US foot). If you are not sure what unit type to select, contact the provider of the images.
- Click the Import button.
If you selected one of the grid unit types and the software determines on import that the georeferenced image is global-based, the Global (degrees) unit type is used instead.
If you selected the Global (degrees) unit type and the software determines on import that the georeferenced image is grid-based, one of the grid unit types is used instead. Your selection in the Units > Distance > Unit > Display drop-down list in the Project Settings dialog determines which grid unit type is used: Grid (meter), Grid (Intl. foot), or Grid (US foot).
If the software needs to change the unit type, the Import Errors message dialog displays after import indicting there is a warning associated with the import . Click Yes in the dialog to display the Import Summary report, which specifies the unit type change.
To import georeferenced images using drag-and-drop:
In the folder containing the georeferenced image file(s), select the files you want to import. Then, drag and drop the files on the Plan View tab.
If the software determines on import that the georeferenced image is global-based, the Global (degrees) unit type is used.
If the software determines on import that the georeferenced image is grid-based, your current unit type selection in the Import pane is used. However, if your current unit type selection is Global (degrees), your selection in the Units > Distance > Unit > Display drop-down list in Project Settings is used instead.
