Global Mapper is one of those strange programs, that are worth very little to pirate them and that for that reason usually go unnoticed. What I am going to do in this exercise I have already done with other programs before:
- With Bentley Site... wow it cost me a while, as there are no tutorials
- With AutoCAD Civil 3D... yes I gave a can, but I finally succeeded.
- With Softdesk 8... I loved it, too bad I only used dwg 14 files
- With Manifold GIS... easy, but not much more
- With ArcGIS... practical but requires 3D Analyst
- With ContouringGE... you can, but it's lucky and just with DEM Google Earth
- With Civil CAD... very simple and practical
It's funny, with Global Mapper being made just in 3 steps:
1. Import data
File / open ASCI text files. It is surprising to know how many formats this program accepts, including V8. In this case I am using a file with extension .xyz
Then we choose that the data only bring points, not lines. At the beginning, it asks if we want to assign georeference when it comes to files that do not have it, this does very well even lets you configure by default one that we use very frequently.
2. Generate the digital model
Here it is only selected in the layer of layers, The points file that we have imported, we make the right button and choose the option Create elevation grid from vector data.
3. Generate level curves
For that, you select File> Generate Contours.
So simple could not be. To show it in 3D only a button is pressed and in a click it is exaggerated or it diminishes the elevation z, what with the other programs is usually another complexity.
Global Mapper is a great program, it does not do everything but what it does is achieved very easily. Although the management of its interface is somewhat obtuse and its help is quite poor, the tutorials that walk around have been built by users.
Then, to generate a profile, it is done with the 3D Path Profile tool, we make a stroke on the map in plan and then right mouse button.
Interesting and simple, the profile can be a polyline. Best of all, you should not be making so many configurations in the process, as the system calculates ranges and approximates the vertical and horizontal scale.
Although they can also be set manually.
... I spent some time looking for how to change that annoying yellow background color ... it is done from the menu View> background color....