- Select the Map you wish to import from the DroneDeploy dashboard.
- Choose Elevation as your map type, and then Export the map.
- Enter an email address to receive the exported map. Select RGB Image as the proper Data Type, then specify the Resolution and Map Projection. Next, select GeoTIFF for the file type and finish by clicking Export to submit your request.
Resolution is the level of detail achieved per pixel in your map. We recommend starting with a lower resolution file (50 cm or 20 inches/pixel) and working your way down to the highest resolution that your computer can manage.
- Follow the same steps, but select Contour as the proper Data Type, then specify the Contour Interval and Map Projection. Next, select DXF (AutoCAD) for the file type and finish by clicking Export. Once the export has completed, your requested data will be waiting in your inbox!
Contour interval is the difference in elevation represented by the space between contour lines. We recommend starting with a larger contour interval (5 feet) and working your way down to the smallest interval.
- Open AutoCAD Civil 3D and start with a blank drawing.
- Type MAPIINSERT in the Command prompt and select the TIFF file you received with your download.
- Set the coordinate system to the appropriate selection for your projects location. Within the Image Correlation, set World File as the Correlation Source for the TIFF image, and specify units as necessary. To finish, select Apply.
- Navigate to the lower bottom left corner to Layout. Allow time for the image to load in this viewer.
- Set Background Transparency (Optional): Select the GeoTIFF, right click, and click on Properties. Next, you’ll want to activate the Image tab and click on Show Image and Background Transparency in order to change the background.
- Type MAPIMPORT in the Command prompt and select Shapefile. Make sure to select .shp in the file selection drop down so you can find the file on your computer. Check that the FileType is readable (ex. ESRI Shapefile, GlobalMapper, QGIS would work).
- It is important to leave the Import Settings as they are with exception of the target projection, which can be changed.
Navigate your cursor to the projection options on the top left of the pop-up. This will bring you to a window that will allow you to set the projection you are using for your project.
Review your inputs. To finish, select OK. Your projection should be applied to the new layer.
- Congratulations! You now have the georeferenced contour layers in AutoCAD Civil 3D.