Transcription
Hello PSC 216. This is your first tutorial video for week number three. You will have an additional map. The first map of this week is relatively easy to create. Um, it's a simple heat map.
The second map is a little more complicated and touches upon some of the tools we talked about in the lecture. Obviously, make sure you've logged into a portto. Make sure you have logged into ArcGIS. Start a new mapping project and name this map, uh, mapping project your last name map 3. As always, let the software start up. Create the map project. Now that you've been creating your maps for a while, this should be a much quicker process.
Once the software loads, turn off the topographic and hillshade maps and make your connection to our course data set. We've already dealt with these layers, so there's really no surprises here. Bring over the NTA 2020 shape file and from our points bring over the shooting points. So again, we've worked with this data already for our first two maps. The problem with the shooting data, some of these points are stacked because the shootings keep occurring at the same locations. It makes it very difficult to understand the concentration or the density of crime in these neighborhoods.
So to solve that problem, we're going to create a very quick heat map using ArcGIS's built-in heat map symbology tool. Right click over the shootings 2024 layer and select symbology. Use the pull down arrow next to single symbol to find heat map, and just select it. The software will do the rest of the work. Notice how the concentrations now have turned into what looks like almost a weather map. Change the method from constant to dynamic. And as you scroll in and out of your map, your heat points will adapt based on the extent. So as I scroll into the Bronx here, we can see the concentrations of where we have been seeing shootings all along, but this just gives us a different visual. And I'm going to scroll back out. That is really the entirety of the first map.
I'm going to change the symbology for this map to black outline. And I'm going to rename my layers. So again, it's a relatively easy map to create. And let's call NTA 2020 neighborhood boundaries. Hopefully I spelled that correctly. Uh, and let's just change shootings 2024 to shooting density or something similar. You can start thinking about now you're in the class three weeks. We're already on our third map. You can start thinking about your own naming conventions at this point. Next thing I'm going to do is zoom to layer and I'm ready for my output. The important part for this week is for you to notice where these hot spot locations are because in our next map this week, we're going to look at perhaps why these hot spots are so persistent. What is the attracting factor here in terms of crime? Double check that your table of contents looks similar to what I have here and that you're ready for your output.
Once again, start a new layout. We can use the letter head layout. Um, 8 1/2 by 11 is fine. Rename the layout by right-clicking, going to properties, and remember your last name, the map, and layout in all capitals makes it much easier for you to find your completed map. So, your last name, map 3 layout, and once again, draw in your map. By now, you should have enough practice. You can probably get it in one shot. But if you can't, if it doesn't look right, right click over the layer and select zoom to layer. That's always going to center and refocus your map. If your map is still giving you a hard time, delete out from the layout and draw your map in.
Once again, I'm going to turn on our topographic map to give us some background detail. And I'm ready for the rest of my map surrounds, which are going to be very basic. I have my north arrow, scale bar, and finally my legend. The legend is very basic. It's only going to show the boundary and the heat map measure. So very simple map I think. Don't forget to add the background to your legend by right-clicking, selecting properties, selecting the display tab. I'm going to add a simple black border and I'm going to add a background color. I think I'll use topaz sand this time. I will save the project and that's it. That's map number three. Very simple but necessary because our next map, map number four, builds upon this concept. we start identifying what is in these areas that could be helping, uh, in terms of increased crime numbers. So that's it. Map number three, do not forget to export it. Share, export layout, and export. And of course, your exported file will be in the ArcGIS Pro folder in your projects folder.
Oh, we have some warnings here. Let's see what went wrong. That doesn't seem like a big deal. If you get these warnings, this seems to be a new bug today. Well, there's always a new bug with ArcGIS. So, let me see what the map looks like. It appears the warning is inconsequential. It's summer semester. I'm doing this video first thing in the morning. I don't care that ArcGIS yelled at me, guys. And you're going to get that with this software. The more you use it, sometimes the more unfriendly it becomes. So, if you get an error, go through with it. And if you have a map that looks like this, that's fine. I'm concerned that you see these hotspot areas because you're going to need to understand this for our next tutorial. And of course, it plays in with the lectures we've already had.
All right, any questions? Feel free to email me. Do not forget to watch the second video for this week because you do have two maps to complete. All right, everybody. Take care and happy mapping.