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Alasdair Rae Profile picture
@undertheraedar
Mar 18, 2020 • 7 tweets • 5 min read • Read on X
Some #QGIS and other tutorials that I've put together, if anyone needs ready-made material:

QGIS Atlas by field - statsmapsnpix.com/2019/01/qgis-a…

3D interactives in QGIS statsmapsnpix.com/2018/11/how-to…

3D rendering with #aerialod statsmapsnpix.com/2019/11/amazin…

Kepler - statsmapsnpix.com/2018/09/a-kepl…
Map layout design in QGIS - statsmapsnpix.com/2018/07/map-la…

QGIS Atlas for automated mapping (this one has downloadable project file) - statsmapsnpix.com/2016/02/more-a…

d3 charts in QGIS Print Composer - statsmapsnpix.com/2016/10/d3-cha…
links above are for specific, often more complext tasks - for a comprehensive treatment of QGIS, with excellent, clear tutorial walk throughs @spatialthoughts is the guy to follow - his site is amazing

qgistutorials.com/en/ Image
there are often little things that people just can't figure out, but can be demonstrated in 30 seconds or less with a gif or short vid, so it may also be a good time to resurrect #qgistips - and I am happy to contribute where I have the knowledge
like this, for example

in the coming weeks I'll probably add another couple of tutorials (including some design and workflow stuff - as in this example) so if anyone has any special requests I'll see what I can do Image
and if for any reason you wish to make an animated map or graphic, this tutorial covers how to create the individual frames in QGIS but also how to patch it together as a complete, file-size-reduced gif in GIMP

statsmapsnpix.com/2017/12/how-to…

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More from @undertheraedar

Alasdair Rae Profile picture
Apr 4
I saw this Met Office 'UK climate districts map' online so naturally I decided to try and figure out the population of each area whilst eating my lunch and these are the incredibly interesting results
Image
Image
there is also the Met Office "climate regions" map but that's a can of worms that I don't want to open, not least because of the unwavering England N / England S line

metoffice.gov.uk/research/clima…
Image
when you plonk the Met Office climate districts on top of a map then you get something like this Image
Read 10 tweets
Alasdair Rae Profile picture
Feb 6, 2023
Okay, some European population density stuff now - starting with the top 100 1km grid squares by population across Europe, based on the most recent Eurostat data - more to follow
these are the top 3 by density, but I've shared a web folder with all 1km grid squares with more than 30,000 people living in them, as well as the top square in each of the 38 countries in the dataset

drive.google.com/drive/folders/…
they're all really interesting to me, but I particularly liked Gijón, Bucharest and Valletta
Read 35 tweets
Alasdair Rae Profile picture
Jan 13, 2023
Topical retweet because I've been watching The Rig but also the news - I remember first seeing these when I was about 10 when playing football in Invergordon and we couldn't believe the size of them
if you want to get a sense of the scale, look at the size of the people cutting up this old rig in Invergordon last summer
the Cromarty Harbour folk have done some nice street view imagery of the firth, e.g.

google.com/maps/@57.68775…
Read 4 tweets
Alasdair Rae Profile picture
Jan 13, 2023
Another very interesting recent England and Wales Census 2021 release is the passport data, so here's a map of % with no passport at MSOA level, will add a couple more below
these are all the different columns in the dataset (TS005Passports held) and the patterns are quite interesting, although I've only done a few maps as a way to explore the data

nomisweb.co.uk/sources/census…
the % with Irish passport map looks like this - probably about what I'd have expected
Read 11 tweets
Alasdair Rae Profile picture
Jan 6, 2023
Today's census map shows the most common housing tenure in each local authority in England and Wales 🏡
I'm working on my spelling of mortgage, probably due to the shock of seeing how many households own without a mortgage!
most common by area is of course a very first-past-the-posty representation of things but I'm interested in the pattern precisely because of this - will fix typo later, perhaps I should do by constituency too
Read 11 tweets
Alasdair Rae Profile picture
Jan 5, 2023
More Census age data today - a little animation of % by single year of age in each local authority. Probably needs a few watches to sink in - lots in here - but the final 10 seconds I find quite sombre, and you'll NEVER guess when lots of people leave home
and, just to go all dataviz retro, here are all the frames as small multiples
nerd note: lots of ways to make small multiples from image sets but I tend to use ImageMagick, and the image above was created using this command:

montage *.png -tile 10x10 -geometry +5+5 age-by-year.png

Once you have a set of files it only takes a few seconds to run
Read 4 tweets

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