Dan Damelin

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  • in reply to: Spatial Data in CODAP #10908
    Dan Damelin
    Keymaster

    Some of your issues are caused by the fact that you have multiple tables with boundaries and lat/longs, not just the one being shown on the canvas. If you click on the tables button in the toolbar and delete the other datasets, then the map will behave better. You have also found one of our bugs. If you have both boundaries and lat/long points in a dataset, then you must drop the attribute to color the boundaries first, and then the attribute to color the lat/long points. This is a bug on our side and we do plan to fix this. However, I don’t have a specific timeline for you on this.

    Note, you can customize the colors by clicking on the layers tool in the map tool palette.

    in reply to: Spatial Data in CODAP #10905
    Dan Damelin
    Keymaster

    There are some known bugs with having both boundaries and lat/long points on a graph. Can you provide a share link to your CODAP doc, so we can take a look and see the issues you are describing?

    in reply to: Parallel Dotplots #10884
    Dan Damelin
    Keymaster

    Is this the kind of thing you are looking for? See shared CODAP doc.

    To create this I had a dataset of roller coasters, then used our sampler plugin to create 50 samples with 30 roller coasters randomly chosen from the original dataset for each sample. Then I calculated two statistics for each sample—Mean Drop and Median Drop.

    The tricky part was creating a parallel dot plot of these two statistics. To do that I took the two columns, one calculating Mean Drop, and one calculating Median Drop, and using the Transformer plugin to “pivot longer” turned those attributes into a column of stat names and one of the calculated values of those stats for each of the samples.

    So, if I’m interpreting your question correctly, you can create parallel dot plots of sampling distributions to compare two or more stats calculated for each of those samples.

    in reply to: about copyright #10795
    Dan Damelin
    Keymaster

    HI Jiyeon,

    You are welcome to and encouraged to use CODAP as part of your assessment items. We ask that where you embed CODAP you acknowledge CODAP and provide a link back to our main site. So, that would look like this: CODAP software created by the Concord Consortium. https://codap.concord.org

    Note, if you are creating your own CODAP documents from scratch that acknowledgement is all you need. However, if you want to use any existing data from example documents that we provide, please contact us before doing so.

    in reply to: Removing Lookup functions #10741
    Dan Damelin
    Keymaster

    Yes. If you click on the attribute (header cell) you will see a menu and can then select “Delete formula (keeping values)”.

    in reply to: How do i do this help **URGENT** #10633
    Dan Damelin
    Keymaster

    What you really want is the new version of the Sampler that we are working on now, which allows you to have multiple stages of selection linked together, so you could set up both “decks”, have it pull a card from the first deck and then the second deck, producing a single row of output from both.

    Here are a couple of hacky ways you might get around that. In this document I set up two Samplers which would allow you to simulate each deck. (Note, I had to modify the first table some so that the second Sampler didn’t try to put it’s output into that same table.). Then I calculated a lookup value from the first table to combine the data from both “decks.”

    In this version, there is one Sampler, but I added a categorical “index” attribute, so you could graph the result of each round of card selection.

    Hope this helps.

    in reply to: How do i do this help **URGENT** #10618
    Dan Damelin
    Keymaster

    Can you describe a bit more about this game? You said you pick one from each pile of six and then throw them out. How many times do you pick cards. It seems the maximum would be 6 times before you would start again with two piles of six cards. Is that correct? If you start again, is there a number of times you go through the stacks and restart?

    Also are you asking about using the Sampler plugin or some way to do this using formulas?

    in reply to: Saving Files with Spanish Version of Software #10433
    Dan Damelin
    Keymaster

    The CODAP software will try to use the browser’s default language to figure out what language to open the software with. That means that opening files will open them in the language CODAP is currently using.If your browser uses Spanish as the default language, then CODAP should launch itself in Spanish, and any files open with it should also open in the Spanish translation of CODAP.However, if you have CODAP in Spanish when you make a share link to a document, I believe using that link to open the shared view of the doc will open in Spanish regardless of the browser default language.

    in reply to: Menus to be fully translated #10435
    Dan Damelin
    Keymaster

    Normandie,Would you be willing to translate any untranslated Spanish text? We have some new features since CODAP was translated into Spanish, so some text is not yet translated. Any help with translation would be much appreciated.If you are interested, I’ll send you an email with instructions on how to access the online translation database.-Dan Damelin

    in reply to: UDL (Universal Design for Learning) #10436
    Dan Damelin
    Keymaster

    I’m not sure what you mean by UDL being “in CODAP.” I would argue that one could design educational materials using CODAP that employ many of the UDL principles, but perhaps you could be more specific about what you mean by UDL guidelines “in CODAP.”

    in reply to: Connecting points #10441
    Dan Damelin
    Keymaster

    You sent me a link to your data here: https://codap.concord.org/app/static/dg/en/cert/index.html#shared=https%3A%2F%2Fcfm-shared.concord.org%2FPrzgG6tnHTtekJ1Uz1MR%2Ffile.json The issue is that the values in “Deer Population” have commas in them so CODAP is interpreting those as text rather than numbers. When you try to use “Deer Population” on a graph axis it is treating each number as it’s own category, not a numerical value on the y-axis.You can address this in two ways.

    1. You can click on the y-axis and choose “Treat as numerical” which will create a scatterplot and you’ll have the connecting line option.
    2. You can click on the attribute name in the table (the table header for the Deer Population column) and then select “Edit attribute properties“, after which you can set the attribute “Type” to be “numeric.” Once you do that all future graphs will treat this attribute as numeric, so you can remake the graph.

     

    https://codap.concord.org/app/static/dg/en/cert/index.html#shared=https%3A%2F%2Fcfm-shared.concord.org%2FPrzgG6tnHTtekJ1Uz1MR%2Ffile.json

    in reply to: Connecting points #10442
    Dan Damelin
    Keymaster

    It can depend on the type of graph you have made. If you make a scatterplot you should see that option. If you are graphing categorical attributes or you are making distribution graphs you won’t. Feel free to create a share link to your doc if you want more specific feedback on the graph you are trying to add connecting lines to.

    in reply to: UDL (Universal Design for Learning) #10443
    Dan Damelin
    Keymaster
    in reply to: Size of CVS file? #10444
    Dan Damelin
    Keymaster

    Having a faster CPU definitely helps, but that’s not usually an option for folks to upgrade their computer. On a high end machine one can work pretty comfortably with 5 or 10 thousand cases. However, if you are struggling with 500 cases there maybe something else going on with your machine. Even low end Chromebooks should be able to handle that number of cases pretty easily. If you have many applications open at once (or tabs on your browser running computationally heavy pages) using up both CPU and memory, that might explain the slow down.

    in reply to: Data subsetting #10454
    Dan Damelin
    Keymaster

    Try sending to codap@concord.org.

Viewing 15 posts - 1 through 15 (of 96 total)