Topic outline

  • Theme 2: Population dynamics

    Theme lecture

    The theme lecture is available at the following web-page:

    Prezi presentation of the population dynamics

    Presentation of the week, including the introduction to individual project work:

    Weekly ppt, including Project work introduction


    Hands-on exercise

    You can get the Theme 2 exercise from git by following instructions below: 

    1. Start RStudio
    2. If it did not start where you left (or you have done something else in the meanwhile), navigate to the exercise directory
    3. Tools -> Shell
    4. this command will make a "checkpoint" where you can come back: git commit -am "my changes after exercise 1"
    5. give command to retrieve new exercise and other changes: git pull

    New: demo for theme 2 is now available at git - you can pull it from there


    If you have edited some of the files (demoX.Rmd, lectureX.Rmd), git may complain that there is a conflict. This means that there are some changes in the repository (the "server copy") files on lines that you have modified, and git cannot determine what is what. It will look something like this:

    Auto-merging demo1.Rmd
CONFLICT (content): Merge conflict in demo1.Rmd
Automatic merge failed; fix conflicts and then commit the result.
    You will find markers with '>>>>>>>', '=======' and '<<<<<<<' in the conflicting files showing the changes in the files. You can either:
    1. edit the file and choose what to keep and what to delete
    2. save it
    3. start the git shell and give the command: git commit -m "conflict resolved"

    or if you know that your file or server version is ok and no changes need to be combined:

    1. start the git shell
    2. to keep your version (assuming the problematic file was demo1.Rmd): git checkout --ours demo1.Rmd
    3. to get the original version: git checkout --theirs demo1.Rmd


    Support data raster file includes:

    • land_05dgr: percentage of land area of each grid cell (%)
    • d2sea_05dgr: distance to coastal line (km)
    • dist2water_05dgr: distance to fresh water features (km)
    • dem_05dgr: elevation above sea level (m)
    • temperature_mean_05dgr: mean annual temperature (°C)
    • prec_annual_05dgr: mean annual precipitation (mm/yr)
    • runoff_annual_05dgr: mean annual runoff (mm/yr)


    Home assignment

    Discover global / regional / river basin population dynamics

    Instructions:

    1. please select a research question below or develop your own (preferred!)
    2. produce one A4/A3 page with following structure: a) title; b) research question and short introduction; c) GRAPHS, maps, etc of the results with captions d) interpretation of the results
    3. you can get help to possible problems by a) searching from internet: there are many people with similar problems; b) posting question to the discussion forum of the course (tool below the text; teachers and other students will be answering to those questions); c) coming to Thursday workshop, or d) asking your fellow students directly
    4. once you are happy with the end result, please submit the work (see below Submission)


    This weeks illustration type: bar and scatter plots (point scatter or line graph); include at least one to the home assignment! See example charts under 'Visualisation guides and examples' -tab 

    Example research questions: 

    • what is the distribution of population in different precipitation and/or temperature zones and has this changed over time? Does that differ between urban and rural population?
    • how far from fresh water sources people live today and has that changed over time or will it change in the future? Does that differ between urban and rural population?
    • where do people live in relation to elevation and distance to coast? Does that differ between urban and rural population?


    Submission    : please submit the assignment by using the submission icon below. 


    Thursday workshop

    On Thursdays we have a workshop at main building U265 in where you can get help on the home assignment and project work. At 9:30 (sharp - please come in time to have time to start computer etc), we'll give a short lecture on Adobe Illustrator to show how you can use it to enhance your vector graphs and make them visually appealing. The related presentation can be downloaded here:

    illustrator_part2.pptx

    This week, we will also revisit cutting and plotting a specified basin or other area in a more convenient way! 

    • Assignment icon
      Home assignment #2 - population dynamics

      Please submit the first assignment here; instructions are in the MyCourses page. 

      Please remember: submission is due on Monday 29.4. at 23:55 If you submit the assingment late, you'll get only half of the points. The submission will be closed completely on 6.5, after which you are not able to submit the assignment. 

      Before submission, please check:

      • your home assignment fits to one page
      • the format of the submission is pdf
      • assignment includes either scatter plot (point scatter or line graph) or bar chart

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Theme 3: Food production