Although QGIS is widely popular GIS application, I understand that not everyone wants to use open source software.In my opinion, it beats QGIS, at least for georeferencing purposes.This tutorial presents a workflow to rectify (georeference) a PDF file with construction layout.
![]() Open dataset Load non-georeferenced map into Global Mapper (File- Open datasets). In the PDF Options window that pops up, choose Import PDF as raster image (1) option and accept it. ![]() First step is to choose rectification method (Options- Rectification Method). In this case, the program automatically selects the best rectification method. It takes into account the number of reference points entered. If you are not sure which method will be the most appropriate, its a good idea to choose Automatic. Search projections by EPSG code (4), type 3879 and find ETRSGK25FIN. Durbin watson tableAccept changes. Use the first window to zoom in roughly to reference points. Adding reference points Click in the middle of the cross, enter the coordinates from the map to Easting and Northing fields. Its always a good idea to check how the result corresponds with a real-life situation. Load the reference dataset and display it together with the georeferenced map. Next, set transparency to maps background (instruction below). In this way, you are able to view information from both datasets at once. How to install plugy diablo 2If everything is alright, export the map (right click on datasets name - Export as). Set transparency to the background Right-click on map layer and select Options. Go to Display tab. Check the box next to Transparent and click Select Transparent Color (6). Global Mapper How To Georeference AnNow select the colour which you want to set to transparent (white in this case) SaveAccept changes What to read next Check how to georeference an image in QGIS Keep up to date with new QGIS 3D visualisation features Find out what are the advantages of web-based point cloud viewers from this text. The Pointscene Diaries A place where youll find information and advice on modern Follow 58 Tutorial Instruction Construction Management Construction GIS 58 claps 58 claps Written by The Pointscene Diaries Follow Follow The Pointscene Diaries Follow A place where youll find information and advice on modern mapping data. Global Mapper Series Of ArticlesThrough my work at Pointscene, in a series of articles Ill address issues related to sharing and managing point clouds, 360 photos and vector data.
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