 Hello, welcome back to my YouTube channel. In today's video I'm going to show you how to use a new functionality in the crayfish plugin to visualize PC Raster flow direction or LDD output using mesh styling. We're going to style flow directions with arrows, with traces, and with streamlines. Let's first install the plugins that we need. We need the PC Raster Tools plugin. Note that you also need to install PC Raster in order to use it, which is explained in other videos. And we need the crayfish plugin. And in the newest version of today, there's the functionality that we need. I've loaded already a DEM in the PC Raster format, so I can continue with calculating the flow direction or local drain direction map using the LDD create tool from the Processing Toolbox. I keep all the defaults in the tool. If you want to learn more about all these settings, click the link to go to the PC Raster documentation. Let's save it to LDD.map. And depending on the size of your DEM, this can take a while. I've done a fast forward here to speed it up. The next step is to convert the Raster LDD to the mesh format. And the new version of crayfish now has the PC Raster LDD to grip tool, where we use our LDD as an input and we save the output to a grip file. Let's call it LDDMesh. Click Run. And this time I didn't do a fast forward, so you can see that this is quite fast. Click Close when it's done. Do a refresh of the browser panel, and then you will find LDDMesh and make sure you expand that part and drag the LDDMesh format to the map canvas. Depending on the size, it will take a while, and sometimes it gives errors if it's too large for your memory, then try it on a smaller part of your study area. When a yellow map has been loaded in the map canvas, it means that the mesh layer has been loaded, and we can switch on the Layer Styling panel to style the mesh. Switch off the Contours, and for now I also switch off the Arrows. And I want only the DEM in the background. I'm going to zoom in on a specific area to see what the result is of styling it with Arrows and Traces and Streamlines. So switch on the Arrows again, then go to the Arrow tab, and there you can change those settings. I've used here a blue color and switched on the Display on User Grid and Fixed Length of 2 pixels, and that gives this result with blue arrows indicating the flow direction. You can also change it to Streamlines, takes a little bit more time to load, and here you will see the flow directions in Streamlines, and also there you can tweak the settings to get different results. And another option is to change it to Traces, or you can also change the Particle Count to get another effect. So that's a great new way of visualizing the local drain direction maps on PC Raster. And I hope you've enjoyed this video, there's much more to come on the PC Raster tools, so please subscribe to my YouTube channel to receive updates.