Georeferencing in QGIS 3 | burdGIS 

Haha thanks. Watch a more recent vid and let me know what category the banjo playing falls under :)

Thanks tenorclef 😀

Great to hear you had no problem with this Mel. Please feel free to share the video. A full course is a happy course :)

Thanks for your kind words Lenora! Please feel free to share the video 😀

Very kind of you SS Soha :) Happy New Year to you too.

Thanks Kuldeep. Happy mapping ;)

Great to hear it was useful Rodrigo 😀

You are welcome

Here you go! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2vsM-ccd44o.html

@@burdGIS Thank you so much

Thanks for the question. In this scenario which layer is being georeferenced? It sounds like both have a CRS. If, however, you're aiming to georef a layer that does not have a CRS then I would always set my PROJECT CRS to the desired CRS. Any other layers required in the project I would REPROJECT to the desired CRS. If using a basemap the setting of the project CRS should project them on the fly but I'd be tempted to use some OSGB36 base layers (check out the Ordnance Survey's free offerings) to use as reference. I hope that helps and please feel free to get in touch via email (www.burdgis.com/contact) if you have any questions.

When you add the layer to be georeferenced it sometimes won't show. You have to fit to display. Also make sure to double check layer order in the layers panel

Interesting idea. Assuming the antique map is already georeffed the you could output the modern map as an image (jpeg or PNG) and bring it in to be georeffed using the antique map as reference

@@burdGIS thank you for your reply, I will give it a shot. Was hoping I could somehow use the .points data that was created when georeferencing the antique map. I will need to output the elevation map, and features are challenging to match to the antique map.

Hi Patrick. Yes, that should work. It may be easier to bring in Bing imagery as a tile layer and then set the project CRS to EPSG 27700. This was QGIS will reproject the tile layer on the fly. Take a look at my xyz tile layer video for more info: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2vsM-ccd44o.html And let me know how you get on.

Thanks for supporting the channel Dhaval! You could use something like map tiler (www.maptiler.com/) to build your own basemap using a georeffed image. If you'd like a video on how to do this please let me know.

Welcome! :-)

Thanks John. Where did the .kml come from and do you know what coordinate system it is in?

@@burdGIS Hi Oliver, the .kml came from an application called ve2dbe which is a coverage modeller for radio systems. You enter an aerial point and the radio characteristics and it shows the coverage using a topology map. We're part of a DCMS funded project looking at mobile not spots near Salisbury and I wanted to take a number of these coverage plots and add them as layers to QGIS. Would it be easier for me to contact you directly by email? Here's the kml: Coverage of Craigleith 2309 MHz Coverage 2309.000 MHz | 3.55 W ERPI | 144.00 dB System Gain 88ffffffRM1F8102A0039C_3.png 0.75 51.09198 50.91212 -1.839842 -2.125662 Craigleith -1.98275161, 51.00205308,0

Thanks John. Email would be great. You can find the details here www.burdgis.com/contact (posting email addresses here leads to much spam!)

What version are you using? And are any error messages shown or does it just freeze and crash?

@@burdGIS never mind now. I woke up this morning and gave it another go and it works now.