Contents
Where is the spatial resolution of an image in erdas?
Displaying the raster’s spatial resolution
- Right-click the layer in the table of contents and click Properties.
- Click the Display tab.
- Check Display raster resolution in the table of contents.
- Click OK.
How do I change my erdas coordinate system?
To set the map projection, in the Image Command window, check Change Map Projection, and then click Options next to the selection. In the Map Projection Options window, select your desired category and projection, and then click OK.
How do I Reproject in erdas?
To open this dialog, click on the ERDAS IMAGINE icon panel, then select Utilities…, and click Reproject…. This dialog can also be opened by clicking DataPrep from the ERDAS IMAGINE main menu, and then by clicking on Reproject…, and off the ERDAS IMAGINE main menu, you can select Main | Data Preparation…
How big of a file do I need for an ERDAS Image?
For images requiring more than 2 Gbytes of disk space (although some sources indicate that the limit is now 4 Gbytes), a two file dataset is required.
How big is the tile size in ERDAS IMAGINE?
ERDAS IMAGINE software uses a tiled format to store raster layers. The tiled format allows raster layers to be displayed and resampled quickly. The default tile size used to be 64 pixels by 64 pixels, but now appears to be 512 pixels by 512 pixels.
How to read and write ERDAS IMAGINE IMG files?
ERDAS_IMG files can be read and written by ArcGIS Desktop and other ESRI applications. See Supported raster dataset file formats from ArcGIS help. It is also supported by Safe Software’s FME engine for format conversion. There appear to be two software libraries that support the reading and writing of ERDAS_IMG files:
How are raster layers organized in ERDAS IMAGINE?
Optionally, a large raster layer may be organized in a “pyramid” for faster processing. In pyramid layers, reduced, subsampled raster layers are created from the original raster layer. ERDAS_IMG is based on a Hierarchical File Format (HFA) structure.