Видео 297
Просмотров 501 535

Filter a layer in QGIS using expressions

21:31

Sample terrain height along a line in QGIS

8:02

That degrees error you sometimes get in QGIS

10:55

Get OpenStreetMap data with one click in QGIS

11:55

Turn on dark mode in QGIS

3:45

Change map projection in QGIS

6:49

Let's play with some bad data in QGIS!

We've all heard of open data, or big data, right? Okay, fine but what about an even more important kind of data - BAD DATA! Bad data is sometimes hard to spot, so in this video I give you a bad dataset and you can look around it yourself and find all sorts of things wrong with it. It may look okay at first, but the more you look, the worse it gets.
automaticknowledge.org/qgistraining/us-states-bad.zip
The video is just a playful reminder that we REALLY need to think about data quality when doing any kind of GIS work, or indeed any kind of work with data of any kind. Otherwise, the results of any work we do might just be bad :(
See my intro and intermediate QGIS courses for more: www.udemy.co...

Видео

Filter a layer in QGIS using expressions

21:31

Filter a layer in QGIS using expressions

Просмотров 2179 часов назад

If you're not used to writing expressions in QGIS it can be confusing, but once you know how it works it can be SUPER useful! So in this video I show you a few filter expressions using a populated places layer. You can find the layer here if you want to follow along: automaticknowledge.org/mapacademy/data/populated-places.csv (you may need to right-click and then Save as... in your web browser)...

Sample terrain height along a line in QGIS

8:02

Sample terrain height along a line in QGIS

Просмотров 350День назад

If you have a line (or other vector geometry) on top of a terrain layer and you want to get the raster values (from the terrain layer) into the vector layer then have a look at this video to see how. Here's the terrain layer I use in the video: automaticknowledge.co.uk/resources/#Scotland See my intro and intermediate QGIS courses for more: www.udemy.com/user/alasdair-rae-2/

That degrees error you sometimes get in QGIS

10:55

That degrees error you sometimes get in QGIS

Просмотров 31714 дней назад

Doing a buffer in QGIS and see a warning about something to do with degrees? Not sure what it means? Want to get to the bottom of it? Then watch this video. The solution is usually pretty simple but it's worth taking the time to understand the cause of the issue. Sure, you can do a buffer in degrees but it will not be very useful as degrees are not the same distance everywhere on earth! See my ...

Get OpenStreetMap data with one click in QGIS

11:55

Get OpenStreetMap data with one click in QGIS

Просмотров 66021 день назад

A slightly longer video showing you how to get OpenStreetMap data into QGIS, fast! I also show you a couple of little tricks for creating a 'spotlight' type map. © OpenStreetMap contributors See my intro and intermediate QGIS courses for more: www.udemy.com/user/alasdair-rae-2/

3:45

Turn on dark mode in QGIS

Просмотров 32521 день назад

Don't like the default, light user interface in QGIS? No problem, turn on Night Mapping mode (dark mode) or the other one - check out this video to see how. I also show you how to increase the icon size, should you want to. See my intro and intermediate QGIS courses for more: www.udemy.com/user/alasdair-rae-2/

6:49

Change map projection in QGIS

Просмотров 27928 дней назад

Okay, so in this video title I kind of lied. Technically, a map projection is not the same thing as a CRS - coordinate reference system - but that's not really important for now. What is important is understanding how to change the CRS in QGIS when you need to. It's one of many very powerful things about QGIS and it's super-simple, but can be confusing at first. Take a look at the video to see ...

11:58

Open QGIS, get data for anywhere

Просмотров 786Месяц назад

This video is aimed at people new to QGIS, or anyone who just wants to get some data for their area of the world. Here I show you how to add OpenStreetMap data via Geofabrik, a great source for OSM data worldwide! I also show you a few basic things like adding data, opening the attribute table for a layer and styling data as well. © OpenStreetMap contributors download.geofabrik.de See my intro ...

3:58

Add Google Maps, Bing Maps etc to QGIS

Просмотров 457Месяц назад

If you want to add popular map layers to QGIS, this is how you can do it in QGIS. The QuickMapServices plugin is what you need. Take a look at this video to see how you do it - it's very quick and you only need to do it once. Note that when you first install it you may not see all map layers, so I also show you how to fix that. nextgis.com/blog/quickmapservices See my intro and intermediate QGI...

5:00

Select and categorize features in QGIS

Просмотров 325Месяц назад

In this example we have a Shapefile of municipalities in Greece. We want to add a column to identify which ones are islands and which are not. There are many ways this could be done, some of which are pretty complex, but in this instance my method is usually the simplest and quickest one - select all the islands manually, add a new column, save results, check results and check again. You can ap...

Get a boundary for anywhere in Britain into QGIS, fast!

5:00

Get a boundary for anywhere in Britain into QGIS, fast!

Просмотров 401Месяц назад

If you are downloading data for Great Britain you can get it from Ordnance Survey or the Office for National Statistics, but this is usually best when you want ALL the data. So what about when you just want one boundary for one area, like a region or a ward? Well, that's when a great tool called MapIt comes in handy. Have a look at the video to see what I mean. You enter a postcode, then you ge...

2:33

Delete a hole in a polygon in QGIS

Просмотров 434Месяц назад

Do you ever need to remove a hole from a polygon layer in QGIS? If you do, this video shows you a simple method for doing it. If you need to delete lots of holes, you can watch this video instead: ruclips.net/video/QDVB4miBxZ8/видео.html See my intro and intermediate QGIS courses for more: www.udemy.com/user/alasdair-rae-2 *Don't worry, the whole chunk of green belt wasn't removed. Yes, you can...

1:35

Get a KML file into QGIS

Просмотров 3612 месяца назад

Do you have a kml file that you want to map in QGIS? Perhaps you found it online, or you made it in Google MyMaps or maybe you got it from Google Earth. No matter what, it's very easy to just drag and drop it into QGIS and then style it however you want. This is the kml file I use in the video: tfl.gov.uk/tfl/syndication/feeds/stations.kml See my intro and intermediate QGIS courses for more: ww...

4:41

Customise legend shapes in QGIS

Просмотров 8662 месяца назад

Added a legend to the map in your Print Layout in QGIS but don't like the default legend symbol shapes? Want to have circles instead of rectangles or wavy lines instead of straight lines, etc etc? Well then check out this video. Further explanation on this page: septima.dk/nyheder/QGIS-legend-patches - in the examples on this page all you need to do is copy the wkt text and then paste it into t...

8:46

Create a global lat/long grid in QGIS

Просмотров 6062 месяца назад

Want to know how to create a global grid of lines of latitude and longitude in QGIS? Well get excited because in this video I show you how, as well as how to fix those chunky non-smooth graticule lines. Here's the expression I use in the video: densify_by_count( $geometry ,10) See my intro and intermediate QGIS courses for more: www.udemy.com/user/alasdair-rae-2/