QGIS and QField

hi colleen ian here colleen so this is that video we discussed with regards to q field which is the app which you can run on an android phone which will sync with your qgis project so i've set up a little project which i will send you the files for and this is what it's going to look like so we've got our study area our grid and then this image is it's basically downloaded and extracted from the the open street map well i think this one's actually the edge one of the esri images but it's basically it's not streamed in it's within the project okay so this is an image on its own and it is a jpeg it's not a tiff and i think that's important the jpeg is quite a bit smaller than a tiff and unless you've got quite a small area when we upload this project to our phone at a later stage a tiff might be quite big so if you've got lots of space go for it but if you don't it might be worth converting this into a jpeg okay so the the plugin we're going to use is called q field so we go to plugins plugin manager and mine's already installed but if you search for q field you'll see the plugin called q field sync sync and all you do is turn that on and then install it and you will get a couple more options you'll get a a new menu under plugins and we are going to use the package for cue field option and you'll also get these little options here package for cue field shortcuts okay so we're going to get to that because before i do that i want to create a new layer and this is going to be the vegetation layer so let's go and put it in our project folder right so we're going to create a new point file and it is for the vegetation or the alien vegetation so let's just call it aliens and save okay and we can use the the points it's going to use the same coordinate reference system as every other layer in the project which is eps g4326 and then we're going to give it a couple of fields or fields so the first field is going to be label and it can have it's going to be text with a length of 80 and then maybe we can say species with the same it can also be text with a length of 80. we'll have a date field which will need to be date and then photo because you can take photographs with your cell phone and then link it back to the data so let's let's have quite a long reserve quite a few characters for that for that field so photo and it's going to be text and we'll add that as well and then say okay and then what we'll do because currently the default color that's come through is is quite a pathetic little brown color which is going to get lost on a small cell phone screen in the field so i want to change this to something i can see so let's go to symbology just make this a bit bigger so i can see all of my options okay so i'll make it a size of three and then i'm going to make it a nice pink color that should stand out against the aerial photography then the labels i'm going to set to to label so anything that is labeled will be labeled in the field so it'll be like a live dynamic update as soon as you label and create a new feature it'll get labeled and that can be species as well so so you could use any option here but it's going to be label and we're going to have a buffer and then i'll have an offset of three and that should work nicely now the next thing i'm going to do is is just edit the attributes form and i want to change the date to not be editable and it is going to basically every time we add a new feature it needs to update immediately with the current date so that's the format that that it's going to be in and then also for photo photo's going to change to an attachment and that should be it for the fields got a message okay so that should be it for the field so i'm going to close that down just say okay and there's obviously no nothing captured yet so we won't see anything but when you're in the field you'll be able to capture your actual position and then you will also be able to actually digitize so you won't actually won't need to necessarily go and stand at the point you capture if you can see it and you can also see it on the aerophotograph you just take your finger tap on the screen to add a new feature so so you can do so you can do it both ways you can digitize in the field or you can actually capture it from the the current position of the phone right so the next thing is then to export this to qgis so we've activated our q field plugin and we need to go to plugins q field sync and then package for cue field so now this will package this project into a folder and we just need to tell it what folder to use in this example i'm just going to use the tutorial folder q field projects and gps projects or project and then create i shouldn't take too long and it should be a fairly small project if i go and have a look on my desktop yep this is it this project has got a whole bunch of layers added to it with a packaged q field project and the total size of that folder now okay is um yeah nearly seven megabytes and the majority of that size comes from that image yeah so i mean there we go that's that's sitting at 6.9 so pretty much all of that size comes from that image so you don't need an image but it is sometimes nice to have a background image when you are in the field okay so we now have a folder with a packaged qfilt project and we need to put this on our phone so i am going to copy this folder then go to my phone and i'm going to put it in documents so i'm just copying that whole folder with the packaged layers and project and i'm copying it into documents on my phone there we go okay right now if you have installed the application the qfield application on your phone you'll be able to now open this so let's uh let me show you that step okay so here is my phone and i need to go and open that application so okay there it's on this field here so this is oh can we see this i'm not too sure how good the resolution is for this camera but anyway so if i open up q field by clicking on the little app oh seriously i'm gonna get messages now okay so this is what q field looks like and we're going to open a local project so click on open local project and then i'm going to internal storage i'll go to the documents folder the folder that i copied onto my desk onto my phone and then open solver cop which is the project and this is what we get okay so that's everything there and the layers we can zoom in and now your phone if you're in the field i can i think my phone might be looking for okay it's just just refreshing that screen but if you're in the field and you've got a decent gps you'll be able you should be able to see yourself now you can see the layers and we can start editing layers so for instance we'll select the aliens layer and collect click on the little pen to start editing okay close that down and what you get is uh i don't know if you can how well you can see this on the on the camera but there is a cross in the middle of the screen so what you can do let's say let's say we don't feel like walking to go and capture this tree here we should be able to just put the cross over that tree and then click on plus and then we'll add some information about that so we'll just give it a an id of zero and the label will be uh wattle okay wattlin model and wattle let's just give this something else for the sake of it ah you see now i can't type first tree okay done uh now the date is automatic and we can actually go and take a photograph of that tree so let's say we wanted to take photograph of that tree we need to allow access to our camera the tree what looks like a tree take a photograph of that picture there we go if we're happy with that i think we can save it and it saves our changes and there we go so now we have a a feature that's captured and we can move on and capture the next feature now if you want to use your gps to capture the point that you're standing on if i click on it now it's going to zoom all the way to cape town so i'm nowhere near the point so let's see what happens received position okay then it zooms me all the way to cape town and then you can actually capture the position that you're standing on so you can either capture you can either capture i keep moving my phone out of the frame here you can either capture the point that you're standing on or you can manually digitize features so that's we'll just bin that one [Music] and i don't know how to zoom back to my layers it might be an easy process i'm not sure but i'm going to stop editing and now we're in browse mode and then those those features will be will now be saved and we should be able to download that project all the shape files back to our project in in qgis because it's essentially it's updating shapefiles it's not updating gpxs or any other file formats so we should just be able to copy it off our phone and open the project again with all those edits in place so that's how cue field works it's a it's a fairly simple it's a fairly simple program but very effective now i don't know if i'm going to be able to zoom and find myself again oh there we go i have found myself i don't know how that happened that was a fluke i think i zoomed out so far that i could see where i was as well as the the site in pretoria okay and that's that's how q field works um i haven't used it much so you probably find within a short period of time you're actually better at using q field than i am but for the for the time being um give it a crack and see how it compares to your garmin etrex and if it's going to be a more efficient way for you to capture data okay so what i want to do is i want to i'm just going to close down q field in my on my phone and then i'm going to copy that folder back from my phone and i'm going to overwrite that project so let's go back to documents documents okay gps project i'm going to copy this whole folder go back to my desktop and delete the original and then paste this in again and now what i'm going to do is i'm going to go into that packaged project and you'll see there's the photograph that i took so so what it did was it created a folder inside the the gps project folder that was in my documents and that should be the picture that i took off my wall okay so now if that's a tree that you took then it links to that so we'll see how that links but let's open up the actual package project and it should now it might take a while to open but it should now have one more point captured that i called wattle and first recaptured so let's wait for cue just to open and see if that worked it should have worked okay there we go so that worked and that was the manual digitizing that i used and there we go first tree now we should have a path name here we go there is a path name to that image now what you can now do and maybe this is as good a time as any to show you this you can use a plugin called evas to connect um two photographs that you'd taken in the field so let's see if we can if i can show you how to use that eva's plugin okay so i think my eva's plugin is already activated there it is there if it isn't you'd need to go to plugins and then just i think it's a core plug-in so you might just have to turn it on i'm pretty sure you don't have to to install it so if you go to installed plugins just turn this one on evas and that'll allow us to link to photographs okay so i need to go to mine and i need to go to this menu here and i'm going to choose the event browser and that opens up this window okay and i'm going to choose options and i just need to change the settings now so i want to choose under file path i need to change that to photo that's that's already defaulting to photo i think it's quite intuitive okay and then the path needs to be relative and we remember that okay and what else we need to go and change some other settings remember this i think that should work let's just see not quite there right so what i need to do is i actually need to choose the correct base path name so i'm going to this folder and then i'm going to right click and copy that path and then go back into my project and par and replace this okay remember this save there we go okay now you you can also have um a bearing field where it gives you an idea of what direction you were facing when you took the photograph i haven't included that here but that is something you can have and the bearing field will just have a little arrow just showing the direction that you were facing so with that um database eva's tool open we can open it up oh is it that one yes it is and then when you click on each of your features that you've captured it should pop up with a photograph with the photograph that you linked to for that particular tree or whatever it is dongga bridge whatever you're taking a photograph of okay so it's a nice way for you to link to photographs that you took when you were in the field and that's using the eva's plug-in okay um yeah that's that's all i've got for you for this little tutorial it took a bit longer than i thought it would but i hope you find it useful let me know how it goes i'll be interested to know the accuracy of your cell phone compared to your garmin etrics okay good luck with that have a good weekend cheers

Channel: Q-tips

Views: 20,874

Rating: 4.9591837 out of 5

Keywords: QGIS & QFIELD, GIS, GIS GPS Mobile, GPS on your phone, Use your phone as a GPS, QGIS eVis, Qfield, GPS Android, GPS Data capture

Id: fqYZlhZwXLo

Length: 16min 53sec (1013 seconds)

Published: Fri Sep 11 2020