Displaying GeoTIFFs

GeoTIFF files are raster images with spatial context that is georeferenced.

Display geo-referenced TIFF files in AccuMap maps. AccuMap automatically detects GeoTIFF files located in either the User Layer Folders or the Additional Company Layer Folders and displays them in the Layer Legend.

Layer Legend functionality including selecting visibility, changing the layer draw order (so that other layers are drawn on top of the GeoTIFF), and setting scale cutoffs apply to GeoTIFFs.

When displayed on the map, GeoTIFFs appear in the correct location and at the current map projection. By default, GeoTIFFs are drawn above the Air Photo and WMS Layers, and below all other layers. The background of individual GeoTIFFs can be displayed as fully or semi-transparent using the Layer Properties pane below the Layer Legend.

AccuMap supports GeoTIFFs with either embedded geo-references, or with geo-references located in a .tfw/.wld (World), or .prj (ESRI) file. Related files must share the same root name to be correctly associated with each other.

Where the file can not be displayed, the file name is colored grey in the Layer Legend and information about the file and why it can not be displayed appears in a tooltip when you hover your cursor over the file name in the Layer Legend.

The following color modes are supported: 8-bit black and white; 8-bit grayscale; 8-bit palette-color; 24-bit true color.

To display GeoTIFFs

  1. Copy the GeoTIFF files into your AccuMap directory. This can be a new subfolder within your existing AccuMap map directory.
  2. Upon launch, AccuMap automatically discovers the GeoTIFF files and they appear under the MyLayers or under the Company Layer node.
    AccuMap also discovers these files if you refresh the Layer Legend view ().
  3. Using the Layer Legend, select the visibility check box for desired GeoTIFF layers.
  4. Configure the layer the same as you configure other layers using the Layer Properties pane.
  5. Right click the layer in the Layer Legend and select Layer Information from the context menu.
    Details about the GeoTIFF file appear in the GeoTIFF Properties dialog including the location, datum, projection, and more.
  6. Select Zoom To Layer from the context menu to zoom to the layer extents.

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