This issue was discussed in Controlling ColorRamp nodes with Group Inputs post but as Blender workflow get simplified and I wasn't able to find this post druging googling I decided to add another answer.
Right click on source and choose "copy as New Driver" then go to the target and "Paste Driver". You can use any group node silder as a Driver.
You have 3 options;
Make whatever is in front of the object semi-transparent.
Render the object, then render what is in front of it (each perhaps on their own render layer), then composite the two renders in the compositer.
Move the object closer to the camera than the object that is obscuring it.
As far as I know, there is no "z-offset" setting for an ...
If you happen to be working with .ply files (or can convert your model to that), I recommend using the Point Cloud Visualizer, like so:
from space_view3d_point_cloud_visualizer import PlyPointCloudReader
ply_filename = "some_file.ply"
point_cloud = PlyPointCloudReader(ply_filename).points
# get color of point at index 100
red = point_cloud['red']
Welcome back to Blender
You import reference images by "adding" an Image, pressing Shift+A and selecting the subcategory "Image"->"Reference".
A "File Browser" window will open where you select the image.
After you selected the image and confirm it, the image will appear in the viewport.
Further settings can be accessed by going in the "Object Data ...
This setting is saved with the startup file preferences.
On a blank startup file just use some operator (like say Add > Plane) and expand the operator options panel once (you can delete the object or undo afterwards if you like).
After expanding the panel go to File > Defaults > Save Startup File and next time you call any operator with options it will be ...