quick and dirty: georeference a map in QGIS
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- In this video I am explaining how to do a georeferenciation the fast track in QGIS with a quality analysis compared to open street map. The used map can be found here:
www.nyfalls.com...
an article can be found here:
www.digital-geo...
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Thank you. This video was very helpful.
this is a great GIS tutorial :) Please keep tutoring :)
Thank you so much Riccardo :)
Nice one! Hey I am a novice in GIS. Could u kindly upload some videos showing the basics of GIS and QGIS
Greetings, first of all thanks for the great tutorial. It is simple and quick to the point :)
I'm having some problems with an older map though, I follow your steps but it distorts the map and it doesn't match with the "Open Road Layer" option. I think the map is in "World Mercator" Projection, I'm not sure if you could help me.
great job! Keep on going...
enjoy this and more on www.digital-geography.com
Hey Riccardo than you so much, I'm new to GIS and your tutorials are helping me a lot. I started following your channel after you had posted your video on Erdas Imagine georeferencing, It was awesome as it made my life a lot easier. Once again, Thank you so much.
glad to hear this and thanks for the compliments.... if you have further comments I'll appreciate them!
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You don't have permission to access /download/tutorials/ on this server."
this is the correct link: gis.cri.fmach.it/download/tutorials/geocoding_maps_from_articles.pdf
Thanks a lot for creating this wonderful tutorial..
I have one question: I am using a map from a research paper showing the distribution of a plant species.The problem is that the paper does not mention the projection system used although the coordinated are available.Which projection system should be used?
You may have a look at the map:
www.dropbox.com/s/ggxrbyzx5kbfndr/china%20map.tif?dl=0
Thanks in advance!And happy new year..
thanks. but who was voting negative and why???
Thank you i am from nigeria and i want to make map using georeference but i am getting difficulties can you help me?
Great!!
Hi, I don't know if is the rigth place to write this questiona.. but I have to georeference svg file. Do you have any toutorial about ?
Thank's in advance.
I followed this process and my map is showing to be over some body of water... My map didn't show a North American Datum number so I googled it by city close by and it gave me a number. Do you know what I'm doing wrong?
what do you mean exactly? You don't know the projection of the map you have?! That is "no problem" just use a geotiff Landsat file as background. So download it at landcover.org for the area you are working on. this will provide the coordinates. I'll upload a video for working this way in a while. but maybe this will explain the workflow behind: image to image georeferenciation using ArcMap from ArcGIS 10
Riccardo Klinger I downloaded a map of the Queen Elizabeth II wetlands Provincial Park from a website I found online. It did not contain the North American Datum number. I found (online) the NAD by googling the Minden Hills area. This gave me NAD83 (CSRS)/ UTM Zone 17N. I followed all of the steps until I got to time stamp 13:17 when you layer the map on the open street map layer. Both maps showed up, only my map showed in the Pacific Ocean off the coast of South America. So I tried another method...
Using the open layer plugin and open street map layer I was able to georeference five points on my downloaded map using the from map canvas feature. Then I get stuck again...This time the map doesn't show up at all during the step found in your video as 13:17. Some error pops up and doesn't allow me to proceed. ...
Its those guys from ESRI :-)
I have no idea...
thank you!
So basically stick to ArcGIS or MapInfo because this is no good if you have an image without datum points.
Add Plugin > OpenLayers to add Bing, OSM, or Google base maps. It's similar to Arcmap.
If you have characteristic features in your map (crossroads, country borders, landmarks etc.) that are also recognizable in a background map from e.g. OSM, Google, Bing etc. you can georeference with datum points.
maybe someone offended by the "dirty" in the video title :) (wild a** guess)