uniDEM supports the most common file types (GeoTIFF, ESRI Shapefile, LAS and LAZ). Supported files can be dragged in from windows explorer or loaded using the File menu as described below. If you are not sure of the support of your dataset, give it a try.

Open Project

Opens a uniDEM project file *.unidem
A uniDEM project can also be loaded using drag and drop from Windows Explorer.

Default shortcut: none

Save Project

Saves a uniDEM project to a *.unidem project file.
The project file is a standard xml file that stores data, parameters, window layout and scripts for the project.

Default shortcut: Ctrl-S

Save Project As...

Saves a copy of a uniDEM project to a *.unidem project file.
The project file stores data, parameters and the window layout for the project.

Default shortcut: none

Load DEM

uniDEM supports single band 16 bit (signed short) or 32 bit (floating point) elevation models.
DEMs can also be loaded using drag and drop from Windows Explorer and selecting Terrain when prompted.

The first DEM loaded is placed in the table of contents. The dataset will be named DEM and its font will be bold. This indicates that this is the DEM that is being operated on and is referred to as the Active DEM. The Active DEM can be switched as required by double clicked on the desired DEM. It is recommended to limit switching between DEMs to avoid confusion.

Supported Formats

• GeoTIFF (.tif)
• Erdas Imagine (.img)

Default shortcut: none

Load Image

uniDEM supports 8-bit and 16 bit gray scale imagery, three band (RGB) imagery and RGBA data.
Images can also be loaded using drag and drop from Windows Explorer.

Supported Formats

• GeoTIFF (.tif)
• JPEG (.jpg)
• Erdas Imagine (.img)

Default shortcut: none

Load Mask

uniDEM supports auxiliary (8 bit) raster data files (masks). WHAT IS STRUCTURE?

Supported Formats

• GeoTIFF (.tif)
• JPEG (.jpg)
• Erdas Imagine (.img)

Default shortcut: none

Load Shapes

uniDEM supports reading and writing ESRI shapefiles (point, polygon and line).

Default shortcut: none

Load Lidar

uniDEM supports LIDAR point files as discrete 3D points.

Supported Formats

• ESRI Shapefile (.shp)
• LIDAR formats (.las, .laz, .e57)

Default shortcut: none

Unload All

When pressed all loaded datasets will be unloaded following acceptance of a prompt.

Default shortcut: none

New DEM

uniDEM supports the creation of a DEM file from an existing DEM (copy), a copy of a DEM file, an empty DEM of new extents, a DEM created from LIDAR points.

The resultant DEM will be created in the Table of Contents.

Copy from existing data set

Creates a DEM using the geolocation information from the selected dataset.

1. Select the source dataset from the list provided
2. Name the new DEM
3. Select default value between zero and void. Note: Void data will not be visible.

Copy from existing file

Creates a DEM using the geolocation information from a file without loading it.

1. Select the file from the New DEM file explorer
2. Enter the name of the new DEM
3. Select default value between zero and void. Note: Void data will not be visible.

Manual Definition

Creates a DEM using geolocation information entered by the user.
Note: The DEM is created as pixel corner, not pixel center.

1. Select projection type:
   • Geographic (WGS84) - Degree spacing, EPSG 4326
   • Geographic (NAD83) - Degree spacing, EPSG 4269
   • UTM (WGS84) - Meter spacing
   • UTM (NAD83) - Meter spacing
   • Other - Enter desired EPSG code
2. Enter new rater parameters
   • EPSG - selected EPSG code
   • X - the horizontal spacing of the pixel in the unit of the selected projection
   • Y - the vertical spacing of the pixel in the unit of the selected projection
   • Extents - the area to be covered by the DEM
     • Left - the left coordinate of the DEM in the unit of the selected projection
     • Top - the top coordinate of the DEM in the unit of the selected projection
     • Right - the right coordinate of the DEM in the unit of the selected projection
     • Bottom - the bottom coordinate of the DEM in the unit of the selected projection
3. Enter the name of the new DEM
4. Select default value between zero and void. Note: Void data will not be visible.

Default shortcut: None

Import Parameters

Loads a uniDEM parameter file to establish common project settings.

Default shortcut: none

Export Parameters

Export a defined set of uniDEM parameters for use in other projects.

Default shortcut: none

Define Projections

Unknown projections can be added using the following steps

• GeoTIFF (.tif)
• JPEG (.jpg)
• Erdas Imagine (.img)

Default shortcut: none

Load Demo Projects

uniDEM is delivered with sample data and projects.

Default shortcut: none

License

uniDEM licenses can be purchased from the Windows Store by accessing this dialog, or directly from Novlum by emailing info@novlum.com

Default shortcut: none