differences for PR #307

datacarpentry · Nov 21, 2023 · d91a205 · d91a205
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diff --git a/02-image-basics.md b/02-image-basics.md
@@ -881,20 +881,22 @@ two orders of magnitude smaller than the bitmap version.
 ## Comparing lossless versus lossy compression (optional, not included in timing)
 
 Let us see a hands-on example of lossless versus lossy compression.
-Once again, open a terminal and navigate to the `data/` directory.
+Open a terminal (or Windows PowerShell) and navigate to the `data/` directory.
 The two output images, `ws.bmp` and `ws.jpg`, should still be in the directory,
 along with another image, `tree.jpg`.
 
 We can apply lossless compression to any file by using the `zip` command.
 Recall that the `ws.bmp` file contains 75,000,054 bytes.
 Apply lossless compression to this image by executing the following command:
-`zip ws.zip ws.bmp`.
+`zip ws.zip ws.bmp` 
+(`Compress-Archive ws.bmp ws.zip` with PowerShell).
 This command tells the computer to create a new compressed file,
 `ws.zip`, from the original bitmap image.
-Execute a similar command on the tree JPEG file: `zip tree.zip tree.jpg`.
+Execute a similar command on the tree JPEG file: `zip tree.zip tree.jpg` 
+(`Compress-Archive tree.jpg tree.zip` with PowerShell).
 
 Having created the compressed file,
-use the `ls -al` command to display the contents of the directory.
+use the `ls -al` command (`dir` with PowerShell) to display the contents of the directory.
 How big are the compressed files?
 How do those compare to the size of `ws.bmp` and `tree.jpg`?
 What can you conclude from the relative sizes?

diff --git a/md5sum.txt b/md5sum.txt
@@ -4,7 +4,7 @@
 "config.yaml" "101b3ac4b679126bb1f437306eb1b836" "site/built/config.yaml" "2023-04-25"
 "index.md" "6e80c662708984307918adfad711e15f" "site/built/index.md" "2023-07-26"
 "episodes/01-introduction.md" "9755639c515fdbf752422e2e59128f63" "site/built/01-introduction.md" "2023-07-26"
-"episodes/02-image-basics.md" "182febb8af73f7bd7a5815f296c4dfec" "site/built/02-image-basics.md" "2023-10-30"
+"episodes/02-image-basics.md" "e346c0d7d0e24783b3a268afae1d930d" "site/built/02-image-basics.md" "2023-11-21"
 "episodes/03-skimage-images.md" "eb0da8ebdea3bf84510b22581b790e67" "site/built/03-skimage-images.md" "2023-10-13"
 "episodes/04-drawing.md" "9d78a765f5e9747ffc2aa43a4a5a414d" "site/built/04-drawing.md" "2023-09-05"
 "episodes/05-creating-histograms.md" "bdcf983127c242eb995605038598d09f" "site/built/05-creating-histograms.md" "2023-09-18"