Dan Damelin

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Viewing 15 posts - 46 through 60 (of 92 total)
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  • in reply to: calculate mode & line graph #7540
    Dan Damelin
    Keymaster

    Regarding your first question about mode. You can use some features of the table to find the mode. One way to do this is to create a column that calculates a count of the cases and place this at a higher hierarchical level, so at first it will just count all of the cases. Then move whatever attribute you want up to that level to group by each unique value. Then sort the count descending. This will show you how often each value is present starting with the most frequent. See this video and this shared doc. Using this technique you can see if there is more than one mode.

    Regarding bar graphs, it is typical that each bar in a bar graph presents some categorical value rather than a numerical value, so we follow that pattern in the expectations for the types of attributes that can be used to generate bar and line graphs.

    Dan Damelin
    Keymaster

    Here’s a screencast in case my description was not clear.

    https://screencast-o-matic.com/watch/c0e23eV4UvM

    Dan Damelin
    Keymaster

    move your mouse over the lower part of that dialog and scroll to access the additional controls

     

    in reply to: Story Builder autosave #7438
    Dan Damelin
    Keymaster

    Actually, I think it is the opposite. If you share a presentation you probably want autosave on so that it doesn’t ask if they want to save changes before moving to the next moment.

    in reply to: Story Builder autosave #7436
    Dan Damelin
    Keymaster

    Each moment in the Story Builder plugin can save the state of the document  at that time. By turning on Auto Save in the plugin, moving things around when you are on various moments will update the state of that moment automatically.

    Note, this is only autosaving in the memory of the plugin. To save the CODAP document with the plugin that has various moments stored as part of the plugin you still need to save it to google drive or to your local machine.

    in reply to: Embedding webpage (or local video file) in CODAP #7415
    Dan Damelin
    Keymaster

    If you have your own video file, then it can be uploaded to a server and then imported to codap. Here is an example: https://codap.concord.org/releases/latest/static/dg/en/cert/index.html#shared=https%3A%2F%2Fcfm-shared.concord.org%2FVc6rGDdQTqx8dFMyy4GE%2Ffile.json

    in reply to: What is the “alignment” parameter for binning? #7338
    Dan Damelin
    Keymaster

    Hi Jacob,

    I tried to replicate this but didn’t see it. Am I setting things up differently than you did?

     

    in reply to: can no longer upload csv files #7216
    Dan Damelin
    Keymaster

    Glad you found a work around. No pressure, but I’m curious if you change the content type to be text/csv does that help? OK to not respond. 🙂

    in reply to: can no longer upload csv files #7214
    Dan Damelin
    Keymaster

    P.S. Before changing anything in the registry, be sure to note what was there in order to put it back if necessary.

    in reply to: can no longer upload csv files #7212
    Dan Damelin
    Keymaster

    OK. Getting a bit into the weeds here so understandable if this is not clear. It seems that on Windows the Registry may be used by Chrome to identify the mime type of the file being uploaded. Some other applications can modify this and it might interfere with Chrome being able to recognize the correct file type.

    If you are comfortable it would be helpful to:

    1. Check the windows registry to see how it maps .csv files to a mime or file type.

    2. Change that to “text” to see if that helps.

    To accomplish #1:

    • Open the Registry Editor by clicking on the windows start icon and searching for “regedit”
    • Drill down to HKEY_CLASSES_ROOT->.csv
    • Take a look at what it shows for that. Attached is a screenshot of what I’m seeing on my Win 10 setup.

    To accomplish #2:

    • edit the “PerceivedType” or “Content Type” to be “text” if yours is not already “text”
    • reboot and try csv drop again

     

    in reply to: can no longer upload csv files #7209
    Dan Damelin
    Keymaster

    Windows 10 and updated Chrome worked for me as well.

    In addition to Bill’s suggestion above you might also try clearing your browser cache (or opening CODAP in an incognito window).

    in reply to: can no longer upload csv files #7206
    Dan Damelin
    Keymaster

    I was able to import that csv into CODAP using Chrome without issue.

    What version of the Chrome browser are you using?

    Have you installed any new browser extensions recently?

    Is your computer managed by your school? Could they be blocking uploads on Chrome?

    in reply to: can no longer upload csv files #7202
    Dan Damelin
    Keymaster

    Can you add the csv file as an attachment so we can take a look? Just tested a local csv and that worked, so it’s not a general issue with importing data.

    in reply to: Counting Observations #7176
    Dan Damelin
    Keymaster

    Bill if movable values could be captured in the formulas, then one could manipulate the line and see reflections in the formulas automatically updated. Not sure how often a feature like that would be used though.

    in reply to: Counting Observations #7175
    Dan Damelin
    Keymaster

    This doc shows some options. One can calculate a count or calculate a quadrant and then color by quadrant. If you turn on “show measures for selection” in the graph, then clicking on one of the quadrants in the legend will select just those and show a count in the upper right. https://codap.concord.org/releases/latest/static/dg/en/cert/index.html#shared=https%3A%2F%2Fcfm-shared.concord.org%2FhsqIEZxkwpcYCUHSyR35%2Ffile.json

Viewing 15 posts - 46 through 60 (of 92 total)