Skip to main content

Unschooling and Python || wget, tar -xvzf and for loops

 Last night was a shorter run at things in general because KO6BTY, (the 13 year old known as Diaze here), and I got a later start.

We spent what felt like forever, but what was actually only 12 minutes trying to share files from the 'usual' file side of the kid's Chromebook with the Linux side using file folders and whatnot. Nothing worked. For whatever reason, the Linux folders weren't visible in the machine's 'My Files' app. Sharing folders led to the machine basically hanging. Then! Then, we handled the issue like a couple of programmers, and instead of downloading in one system and trying to copy to anther, Diaze just ran the following from her Linux terminal

wget https://data.cosmic.ucar.edu/gnss-ro/cosmic2/provisional/spaceWeather/level2/2024/203/ionPrf_prov1_2024_203.tar.gz

That was snazzy! It just brought the file right in because, well, command line interface tools are just... snazzy. 

Having a chat record of our work together is also really helpful. I remember feeling like we'd wasted so much time trying to copy files over. We literally spent 12 minutes. Not. The. End. Of.The. World. Happily!

Then! The kid used tar to unzip the compressed data tarball. Watching her as the 4000 files fold out onto the drive was a lot of fun. This is a good project! I also loved the part where she caught on that this was the same Python with the same constructs she'd been using on the Project TouCan's remote Morse code key.

From there, we got back into using the netCDF4 package to look at data. We talked about Python Dictionaries and then looked at the latitutude values of a radio occultation satellite pass that measured the electron density of the ionosphere. 

The goal at this point is for KO6BTY to create a map of the latitude and longitude values in Datasette to see where the satellite pass took place with respect to Earth.


Comments

Popular posts from this blog

The Valentine's Day Magnetic Monopole

There's an assymetry to the form of the two Maxwell's equations shown in picture 1.  While the divergence of the electric field is proportional to the electric charge density at a given point, the divergence of the magnetic field is equal to zero.  This is typically explained in the following way.  While we know that electrons, the fundamental electric charge carriers exist, evidence seems to indicate that magnetic monopoles, the particles that would carry magnetic 'charge', either don't exist, or, the energies required to create them are so high that they are exceedingly rare.  That doesn't stop us from looking for them though! Keeping with the theme of Fairbank[1] and his academic progeny over the semester break, today's post is about the discovery of a magnetic monopole candidate event by one of the Fairbank's graduate students, Blas Cabrera[2].  Cabrera was utilizing a loop type of magnetic monopole detector.  Its operation is in concept very sim

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

Now available as a Kindle ebook for 99 cents ! Get a spiffy ebook, and fund more physics The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems , there seem to be fewer explanations of the procedure for deriving the conversion, so here goes! What do we actually want? To convert the Cartesian nabla to the nabla for another coordinate system, say… cylindrical coordinates. What we’ll need: 1. The Cartesian Nabla: 2. A set of equations relating the Cartesian coordinates to cylindrical coordinates: 3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system: How to do it: Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables. The chain

More Cowbell! Record Production using Google Forms and Charts

First, the what : This article shows how to embed a new Google Form into any web page. To demonstrate ths, a chart and form that allow blog readers to control the recording levels of each instrument in Blue Oyster Cult's "(Don't Fear) The Reaper" is used. HTML code from the Google version of the form included on this page is shown and the parts that need to be modified are highlighted. Next, the why : Google recently released an e-mail form feature that allows users of Google Documents to create an e-mail a form that automatically places each user's input into an associated spreadsheet. As it turns out, with a little bit of work, the forms that are created by Google Docs can be embedded into any web page. Now, The Goods: Click on the instrument you want turned up, click the submit button and then refresh the page. Through the magic of Google Forms as soon as you click on submit and refresh this web page, the data chart will update immediately. Turn up the: