Dem Earth uses EPSG:4326..


Most of the time, height data (DEM, DTM, DSM) is contained in Geotiff files. The has become the defacto standard.


The advantage of geotiff is that it is basically just tiff, with some extra tags. Tiff is supported by every tool out there.

The extra tags contain details about the referencing system, so that the data or image can be placed somewhere reliably(GeoReferenced).


In the latest versions (5.650) or greater, dem earth can now read Geotiffs directly from it's data manager. No need for a world file for referencing.


it can NOT read BIGtiff's, as c4d does not support bigtiff, so you have to watch the files sizes.


if your Tiffs are single channel floats, you just need to be aware of the size. The data part can not exceed 4GB.


The data manager can open any geotiff and read its referencing header.


if the projection is not compatible(not EPSG:4326), and you have set up QGIS on your computer correctly, DEM Earth can use QGIS to reproject the image to a compatible projection for you. It will ask you if you want to do this. if you respond with "yes" it will locate QGIS, open a command line console, and run the command line tool to reproject your image. This runs in the background. when it has finished, it will update the data manager, and load in your newly reprojected geotiff.  The new geotiff has the same name as the one you selected, but has 4326_ appended to its file name.


As long as that new file was not too large, it will be able to load and georeferenced it.


FWIW..

  • Essentially, I made this functionality for this for my own use. So that I don't have to use global mapper to do this task.
  • I understand that not many people will use this. 
  • If you do need it, I will need to explain in detail how to set thing up to work perfectly. For that I charge 1 hour of support to get this setup and working. it is fiddly, but once it is up and running it is very simple to use, and absurdly fast at reprojections. *


*For example, I am able to reproject files in minutes, that global mapper takes hours or days to process. Global mapper costs a lot of money, and reprojections are pretty much all I ever use it for. In adding this bridge, I can more or less save myself the cost of global mapper moving forward. 


Moving forward


There are many other things I could add in the same way, but first I have to see if there is any interest or demand from users, for going down this road. For example, automate the generation of massive, accurate contour splines, from geographic height data. I have already added support for .SHP file import to the Poly object. 


If there is any real interest in this connection, and expanding it to do more, get in touch.


best

Paul