In this module I finally understood the differences between raster and vector layers and when to use each one. I also saw how the visualization of my data will depend a lot on the resolution and the extent.
My main problem in the exercise was to select the best order of layers without hiding each other. And I’m not sure I have made it yet haha.
*I intentionally chose not to hide my windows and tools
This module was a major throwback to learning how to navigate and code mapbox. I remember playing around with the layers, manipulating the displays and changing the information/ languages on the map. I value the parts of this module which really explained the different types of geospatial data models, and how vectors and raster differ. While it took a little bit to wrap my head around the differences, it was insightful and definitely useful in my future endeavors.
I really like your choice of colours and transparency as the layers really standout from one another! In response to the problem you mentioned for the different layers, I also have that issue. What I have found helpful for myself is to ask myself “what layers tell the story and what do not?”. This allows me to eliminate the layers which I think are disturbing or do not contribute to the story.
I am a complete beginner with this, I have completed this far following the directions, but I still feel like a newbie.
the differences between raster and vector layers I do not fully understand.
Completely new to this and had a number of issues. Probably just me, but i found the instructions a little to vague for me to follow, especially when there were a number of download possibilities for one thing. I am more of a visual leaner so some screenshot demos may of helped.
I am not sure if the raster outside of the dataset area made any benefit for me to understand, so its a bit lost on me. Unless its looking for possible areas in which coverage is comparable and potential sites for new gibbon groups?
I had issues with downloading the conservation shp file so haven’t included it. If anyone can help that would be great. Every time i tried it just said it couldn’t upload it error type message or downloaded a lot of raster for different languages. Also as someone else mentioned working out how best to layer it was tricky, i had a hot mess for awhile. Absed it on point,s lines and polygons then rasters ???
Hi, I am new to this and I am struggling with this assignment. I have a mac. First, it was tough to download OSM. And when I was trying to download the VNM databases, I got a notification “select all”, and I clicked that. Downloading the roads and cov databases prompted the “select all” option. I think I did something wrong here, but I am not sure what. Would really appreciate your help!
After completing this module, I finally feel like a have a basic understanding of the differences between vector and raster data. I used my own data from an elephant survey flight in the Wonga Wongue Reserve of Gabon instead of the gibbon data. I was able to arrange the layers in a relatively coherent manner by having Open Street Map on the bottom, followed by a satellite image, followed by the shape file of the protected area. I then changed the symbology so that the elephant vector points were bright green and easy to see compared to the layers below, and I also made the shape file of the protected area somewhat transparent so that the satellite image below was still visible. This was a big step towards my learning goals, though I would still like to learn how to overlay my flight tracks, create a legend for the map, and export the map as a PDF file.
In this learning section I refreshed what I know of vector and raster and uncertianties in data. I enjoyed playing around with zooming into different layers and datasets and also in re-ordering the layers to get different views (it was hard to choose which screenshot to attach!!)
It was good to learn of a few new places where we can dowload open source datasets - the instructions were clear enough and included links to follow and time was spent exploring these new sites.
YW Chan Response
A clearly presented map with good colour and choices - opacity can also be considered, because of this I went back and altered what colours I had chosen to make it more visible and ‘clean’
Perhaps another screenshot could zoom in on a smaller part of the reserve - showing a bit more resolution
Hi @YWChan, it looks like you did a great job with this assignment! I also found that the best way to learn was simply to play around with the variables of each layer until I came up with something that I liked. I like how simple and uncluttered your map is while still representing the data in an understandable manner. By keeping the roads, rivers, and gibbon sightings on top of the park boundary layer, you managed to keep all of the relevant data visible. Perhaps another way to do this would be to adjust the opacity of that yellow layer? Keep up the good work!
I am not certain that this is what it should look like, so any feedback would be great! I have turned off the VNM_cov layers as it looks clearer without.
Great module! I think that made very more clear to me the differences between raster and vector layers. I enjoy work with the new layers, although I had some doubts about some of the layers and how to organize them in the project.
Anxious for the next modules, very great learning until now.
You did a very great job, @Isai. I think the greatest way to learn GIS is by practicing and exploring the projects, the layers, their attributes. So, don’t feel disappointed, you are in the right way, your project is very good. I have some difficulties as well with the concepts of raster and vector. But I think this will be more clear for us as we advance in the course and in the user experience with GIS. If you need anything that I can help with, just talk to me.
This exercise was very interesting . I am now getting to understand well the difference between raster and vector data sets. I am liking the way I conveniently move around my layers, changing the symbology. Those two quizzes were spicy - had 5/7 in the second one though My confidence is building up. Thank you Lucy.
for a complete beginner you are doing fine. Keep it up!
The different between the raster in other words is the following:
raster: what you can describe with pixels
vector: what you can describe with coordinates
A lots of thing is clearly a raster (aerial photo or landscape cover) or a vector (roads, observation points), but a few thing can be made as rasters and vectors too. For example a map. A map can be a raster if you just add some picture, but it can be a very complex vector layer with lines as the roads and polygons as the buildings. Think about the satelite picture of the google map and the normal sight of it.
My confidence is building up. Thank you Lucy.