When LDART delivers a data file with State Plane X and Y values carried out to six decimal places, are the LIDAR data really accurate to a millionth of a meter/foot?
• No they are not. The horizontal and vertical accuracies are 0.8 meters and +15 centimeters, respectively. It is difficult to program LDART to “know” what the precision of the data is in various projections and selection of units. For now, we decided to put in more digits than necessary for some projections, in order to accommodate the precision needed for others.
Related Questions
- I have a weather data file, but I don’t know what values to use for the exact SHIFT, latitude (in Type 16) etc., or if my (measured) data is coherent. What can I do to find out ?
- When LDART delivers a data file with State Plane X and Y values carried out to six decimal places, are the LIDAR data really accurate to a millionth of a meter/foot?
- Why are values of grain size only given to 1 decimal place whereas percent sand and other data are only given as integers?
