Importing *.las Files into Global Mapper The first step is selecting the “open your own data files” button or the open folder icon. After doing this a dialogue box will pop up asking for your projection. Choose the appropriate projection and select ok. Ensure that the data is opened as a point cloud and hit […]
The import manager will open the dialogue to the right. Select the data to be imported and the export location. Click Ok. The next dialogue has information that needs to be provided (highlighted below). For the example dataset BIL and Signed 16 bit should be used. For more info on what signed/unsigned bits are look […]
MicroStation can only read PXYZ (point, easting, northing elevation (orthometric height)) files. You must first change your files to this format and save as *.csv. Load in a vector (*.shp file) of control point locations. This can aid in determining accuracy issues. Go to MicroStation–>Tools–>Toolboxes and select it. Turn on XYZ Text Next you […]
Open up Terrascan and Read Points. It’s important to only open every 100th point for processing time. The next step is to export a lattice model. Grid spacing of 500m is acceptable because the geoid model has km long arcs. Filling gaps will prevent gaps in your TIN. Three decimal places will give you mm […]
The NDVI tool displays stages of growth by normalizing the difference between the Red and Near Infrared bands using the equation (NIR-Red)/(NIR+Red).
From Raster—Spectral—Principal Component. Look at the output text in a text editor. Arrange it similar to this and calculate the variance (2nd row value / sum of 2nd row). If you wish you can rerun PCA on your original file and only use the first 2 or 3 […]
ERDAS Top of Atmosphere Correction To do this calculation the Spatial Model extension was used with a *.gmdx file. Select the Spatial Model file to use. This tutorial does not go into the creation of these files. You will need to learn to model this which is why for the beginner the costly atmospheric correction […]
PCI uses landsat 8 imagery different than ERDAS Imagine. ERDAS extracts imagery for you into it’s own stacked format. For PCI you must extract the files using an unzipping program which gives you B1 etc. Open Focus Next open or drop and drag the .txt file onto Focus Select the band you would like to […]