I'm not quite sure how to phrase this so apologies if it is a duplicate. I have a project that uses a series of lines created from the boundaries of polygons overlaid onto a map in QGIS. I understand how to use QGIS to create a point layer with the centroid of the initial polygon before it is converted to a line. How can I move a polygon or line layer to a new location based on the centroid placement?
To try to explain it more clearly, imagine 2 buildings on a map, both in separate locations. Each is expressed as a polygon layer in QGIS. What I am trying to do is calculate the centroid of each and then move building A so that it sits in the position of B, using the centroids of each to ensure that they are positioned in the same place, even though they are different shapes. All I can think of is there might be a way to lock the centroid layer to the line layer and then move them both by editing the coordinates of the centroid? I am fairly new to GIS in general though so I'm not sure how to approach the problem.