Qinsy
How-to Create a Geoid or Vertical Offset Model (VOM)
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 *.
Related pages:
On this page:
Schematic overview
Questions & Answers
| Subject | Question | Answer |
|---|---|---|
| Projected | What is projected data? | We assume that this is projected on project datum and the separation value is also relative to project datum. |
| Point spacing | What is regular and irregular spacing? | Irregularly spaced: Regularly spaced: |
| 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 |
| Purple steps | What do they refer to? |
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