Start a new design
Topography file
Start your design by uploading a file that has elevation data for your field. Several file formats are supported:
- A text file with northing, easting and elevation numbers arranged in columns and separated by spaces, commas or tab characters. These files have extensions like .xyz, .nez, .fbg or .csv.
- A lidar file with an extension of .las or .laz.
- A point shapefile compressed into a single .zip archive.
Check out the Examples page for sample topography files that you can try yourself.
File Options
Most lidar files use a point classification of 2 for surface ("bare earth") points. Unprocessed lidar files sometimes use a value of 0. Increase the value of the Keep every Nth point field above 1 if the file is too large and taking an excessive amount of time to process. For example, a valule of 10 would only use every 10th point--significantly reducing the amount of time needed to analyze the data.
File Options
Enter the column name that your shapefile or .csv file uses to store elevation data. Common values are "Elevation" or "Altitude".
File Options
Enter the column number that corresponds to each attribute in the file. For example, a typical NEZ file would store northing values in column 2, easting values in column 3, and elevation values in column 4.
Coordinate system
Every topography file stores its data using some type of coordinate system. Enter the EPSG number of the coordinate system used by your elevation file. Some common EPSG numbers are listed on the Projections page. If you are unsure of the coordinate system your elevation data uses, enter "None" as the elevation file EPSG number. Leave the reproject to EPSG number as "None" unless you want to reproject the data to another coordinate system.
Load a previous design
Select a previously saved design from the list so that you can pick up from where you left off. Designs are retained for 30 days.