How to make isochrones on QGIS using TravelTime (1/3)

welcome to the first tutorial for the travel-time platform official plugin for QGIS by olivier a contributor to QGIS in today's session we will cover the basics of the plugin will look at installation and setup have a quick overview of the three different features and take our first steps with the plugin this tutorial is meant to be an introduction before diving further you should be able to follow if you're completely new to QGIS but you should still be able to learn a few things if you know your way already first we're going to start QGIS if you don't have it already go to the QGIS org website spot the download now button and then choose your version if you're on Windows I suggest you take the standalone installer which is much easier to install and you can pick either version 3.6 which has more features or version 3.4 which may be a bit more stable it won't make any difference for our usage if you're on Mac OSX you have just a choice between version 3 point 6 or 3 point 4 just click on the button once you've chosen your version and wait for the download to finish once your download is finished just open your download folder and double click on the installer this will be a very typical installation so just follow the instructions clicking ok every time you're prompted so basically you can just click Next agree click Next to install it in the default location you don't need any datasets for our use and so you can install okay so when the installation is done you can just close all the windows go to the Start menu look for QGIS and start the software once QGIS has started we'll be able to install the plugin right from within QGIS just go to the plug-in menu choose manage and install plugins and in this dialogue in the search bar start typing the name of the plugin select it and just click the install button if the installation is succeeded you should now see a pop-up appear on your screen you can just take the don't show again checkbox so that it doesn't appear anymore and then click OK to close it we need to do one last step before being able to use it but as you can already see there is a new toolbar that's appeared on the top here which is the travel time platform tool on that toolbar click on the configuration button and this will open the main plug-in configuration dialog so this plugin actually uses an API or web service and to be able to use it you need to register for an app ID and API key you can do this for free by clicking on the get a free API key button so click here this will open a web page where you have a very simple registering form just enter your first name your last name and your email address hit get a key and in a matter of minutes you'll get an email providing the API key and the app ID once you've got that switch back to QGIS and enter the app ID and API key then just click okay and you're done you can start using the plugin okay so I'll give you a quick overview of the plugin so as you already saw the plug-in adds this new toolbar here at the top and provides access to all the features of the plug-in alternatively you can also access those features using the plug-in menu and the travel-time platform entry and the third place where the plug-in appears is in the QGIS processing toolbox you can see it at the very bottom here the toolbar also adds this small button showed the toolbox which also shows the processing toolbox but pre-filtered to show only the travel time related algorithms so the main feature of the plugin consists of three algorithms the time map algorithm the time filter algorithm and the routes algorithm each of these comes in three versions the easiest being here in the tool bar which are not tools but can be used by clicking on the map then you have the simplified ones which provides simplified dialogues and then the advanced ones which will allow you to harness the power of the API the plug-in also adds a few other goodies first the geocoding algorithms which allow you to translate textual addresses to geographical points and the reverse geocoding which does the opposite assigning textual addresses to geographical points the plug-in also adds this button add a background layer which you can use to quickly access the background tiles here in the browser just drag and drop them on the map to have an easy background as you may have noticed when you click on it you have a message here which indicates that you could get more of the layers here depending on your API keys if you need this feature you can just request it and show it again click on the background layer and just follow the queue to request access to those additional parts just a warning you will at some point when you use the plugin and see errors like this that says you've exceeded your request limit and this is because with the free API key you have a request limit of around ten queries per minute so whenever you see this message it's normal just wait for a minute or so before you do additional requests okay so let's get started using the tool for the sake of this tutorial I'm gonna pretend that I own a pizzeria and that I'm thinking of setting up a new delivery service so I'd like to visualize the area that my delivery team would be able to cover by bicycle around my pizzeria to get started we just add as we saw just before a background layer so click on it on the add background layer button you will see the available XYZ tiles here as you see have a few more than you probably so as we saw just before if you like those you can also request access to them using the small link we saw before just drag and drop it on the main canvas to add it now using the scroll wheel you can zoom in my pizzeria is located in London so I'll find a point and say my pizzeria is located here so as I just said we'll want to know the area that the delivery team can cover from here so just activate the quick time map tool I click on it and using the small arrow you can quickly configure it so let's say we want to see what area we can cover by cycling for 15 minutes around my pizzeria once you're done just click on the point and zoom out you can see the polygon that my delivery team would be able to cover you can change the settings here for instance if we did the delivery by car we'd get a slightly smaller polygon and you could use the same tool in a different way you could for instance also see from where it's possible to reach your pizzeria by public transport and let's keep it to 15 minutes and you see each time the polygon dramatically changes one very important thing to notice is this small icon here next to the layers this means that the output layer is actually a temporary layer it won't be saved with the project so if you close your project you'll lose this result at any point if you want to save those results you need to do an additional step right-click on it and choose here make permanent for now since we're just playing around we'll keep it like this so from our quick analysis it seems that the best means of transport the best transportation type for delivery is the bicycle so for now we'll just remove those two layers and keep anyone we're also going to rename it by right-clicking on it and rename and call it delivery zone bike I'm just gonna close the browser here to get a bit of space on my screen now I would like to know where I could advertise I was thinking maybe I could put some ads at nearby bus stops to invite the customers to pass by at the pizzeria when they come out of work of course there's no real point in advertising at bus stops that would be too far away as people probably wouldn't walk much more than 10 minutes from a bus stop to the pizzeria so to do this analysis we'll first need the data we need the points that are located around my pizzeria so to get this type of data I suggest you use the quick osm plugin so it's another plugin that's not related to travel time but we'll install it so again we go to the plug-in manager we look for quick osm and exactly like we did before we install it like this once the installations done you can close the plug-in manager and again this plug-in also adds a new toolbar which you can see here and which allows us to use it let's open the quick osm dialog and this is the main quick osm dialog which is a really nice way to get data into your projects it downloads the data from the OpenStreetMap database this data is open data meaning that you can use it in any type of product as long as you mention or credit the OpenStreetMaps contributors on your publication so we're looking here for public transport and stop position if you want to know more about this key and value just click on the button here and you can get a description and we also want to limit the search to the canvass extent because we don't want to download data from all around the world in the Advanced section here which you may need to unfold will just uncheck lines multi-line strings and polygons so they assure that everything we get back from the OSM is only points and then click run query so this may take a little bit of time depending on your connection okay once the query is successful you can just close the window and you'll see a new layer containing all the stock positions that were visible in the map canvas make sure that when you do this that your window is not zoomed out too much because if it is you'll get too many points and this may cause some problems afterwards so we'll zoom back in again and now let's say okay I want to find out which of those bus stops are less than ten minutes away by foot from my pizzeria so I used the time filter algorithm and change the settings just like we did before walking 15 minutes before I click on my pizzeria I need to make sure to select this layer because if I don't have a point layer selected I'm not able to use it so you need to first select a point layer in the legend here then you can enable this and now I just click my pizzeria this may take a little bit of time again and once it's done you'll get a new layer an output layer that distinguishes between the bus stops that are reachable or unreachable so you can quickly see which stops you need to focus on for your advertising campaign just like before I'll rename this layer and call it nearby bus station just so that I remember what it actually was and for now I'll just toggle them off make things look a bit more clean then the next thing I want to do is to print out some maps showing the directions from some well-known places in London to my pizzeria to help customers find a place so I use the last of the three algorithms which is a quick route one and click on it to enable it and just as before I can look at the settings here and leave them like this for now and I'll pick a place in the city let's take I want to go from here to my pizzeria here click and you see I get the best route timewise to get to the pizzeria you can see also it indicates for each segment which means of transport was used so you can see you start walking and then you take the tube and then you walk again you take a bus then you walk up to the pizzeria you can use the same tool for much bigger distances let's try from somewhere in Birmingham to my pizzeria again click and I got the whole route from Birmingham this concludes our first tutorial so we had a quick look at the map tools provided by the travel-time platform plugin I invite you to continue watching this series because in the next one we'll have a look at the algorithm here from the processing toolbox which really is a much more powerful way to use the travel-time api and in the meantime if you want to find additional help you can click on the Help button here which will open the online help page giving access to the same tutorial you're watching but in written form as well as the reference manual you'll also find links to the issue trackers in case you hit some bugs there's also a contact us link where you can provide feedback and a link to the QGIS help resources in case you need a bit more information about how to work with QGIS that's it for today thanks for watching

Channel: TravelTime

Views: 8,959

Rating: 4.9540229 out of 5

Keywords: QGIS, polygons, isochrone, TravelTime

Id: HAALMHZQzFM

Length: 16min 41sec (1001 seconds)

Published: Wed Jun 26 2019