This How-to describes step-by-step how to create your own geoid model file or height level correction model and use it within Qinsy.
See Questions & Answers for more in formation.
Also for items with an asterisk *.
- How-to Create a Vertical Offset Model (QGFVOM)
- How-to Create a Geoid model (.bin)
- How-to Use the Geoid Model Migration Tool
Questions & Answers
|Projected||What is projected data?||We assume that this is projected on project datum and the separation value is also relative to project datum.|
What is regular and irregular spacing?
|What is meant by having a different spacing in x and y?||The data can be regularly spaced but still have a different spacing in X and Y.|
|Area size||What is a small area?|
This is a bit tricky since it mostly depends on points in an area:
If the QGFVOM is larger than 15MB it is also a good indication that you might need to use either a smaller area or try the BIN workflow.
|Datum||What is Project datum and Source datum?|
Example of geodetic setup:
Project datum: ED50
|What do they refer to?|
|Were are the different types of geoid model files stored?|
QGFVOM VS BIN
|What is the advantage of one format over the other?|