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rjoberon · Jul 26, 2024 · 75ece8e · 75ece8e
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diff --git a/_posts/2005-03-26-decoding-the-city-database.markdown b/_posts/2005-03-26-decoding-the-city-database.markdown
@@ -2,6 +2,7 @@
 title: Decoding the city database
 image: /img/dsat1_dekodiert_1.png
 description: A database of German cities is found together with their coordinates.
+tags: ["dsat", "coordinates"]
 ---
 
 *Note: This post is a copy of the original web page I set up in 2005.*

diff --git a/_posts/2024-04-02-finding-the-tiles.markdown b/_posts/2024-04-02-finding-the-tiles.markdown
@@ -2,6 +2,7 @@
 title: Finding the tiles
 image: /img/offsets_zoom.png
 description: We find a way to identify and find the image tiles.
+tags: ["dsat", "cis/cod", "tiles"]
 ---
 
 To find the image tiles in `dsatnord.mp` and possibly decode them, we

diff --git a/_posts/2024-04-03-learning-about-the-image-format.markdown b/_posts/2024-04-03-learning-about-the-image-format.markdown
@@ -1,6 +1,7 @@
 ---
 title: Learning about the image format
 description: The tiles are stored in the lightning strike wavelet-compressed raster image format.
+tags: ["cis/cod", "tiles"]
 ---
 
 

diff --git a/_posts/2024-04-19-viewing-tiles-with-firefox.markdown b/_posts/2024-04-19-viewing-tiles-with-firefox.markdown
@@ -2,6 +2,7 @@
 title: Viewing tiles with Firefox
 image: /img/screenshot_firefox_plugin.png
 description: Using a plugin for Netscape Navigator we can use an old Firefox verstion to view tiles in the Windows emulator Wine.
+tags: ["cis/cod", "tiles"]
 ---
 
 Knowing the offsets of (potential) tiles, we can pick one (56057877)

diff --git a/_posts/2024-04-20-understanding-the-image-header.markdown b/_posts/2024-04-20-understanding-the-image-header.markdown
@@ -1,6 +1,7 @@
 ---
 title: Understanding the image header
 description: The image header contains the size of the file and the header.
+tags: ["cis/cod", "tiles"]
 ---
 
 One important question remains: Are the tiles in `dsatnord.mp` stored

diff --git a/_posts/2024-04-21-visualising-the-tile-size-distribution.markdown b/_posts/2024-04-21-visualising-the-tile-size-distribution.markdown
@@ -2,6 +2,7 @@
 title: Visualising the tile size distribution
 image: /img/offsets_sizes.png
 description: What's the size of tiles and how are they arranged in the file?
+tags: ["dsat", "tiles"]
 ---
 
 With [mp.py](/src/mp.py)'s `offsets` command we can dump tile byte

diff --git a/_posts/2024-04-22-getting-an-overview-on-the-file-content.markdown b/_posts/2024-04-22-getting-an-overview-on-the-file-content.markdown
@@ -2,7 +2,7 @@
 title: Getting an overview on the file content
 image: /img/dsatnord.png
 description: Putting the bits and pieces we know about the file together.
-
+tags: ["dsat", "tiles"]
 ---
 
 In [the last

diff --git a/_posts/2024-04-23-searching-for-the-index.markdown b/_posts/2024-04-23-searching-for-the-index.markdown
@@ -2,6 +2,7 @@
 title: Searching for the index
 image: /img/un1.png
 description: We visualise the parts which we have not decoded, yet.
+tags: ["dsat"]
 ---
 
 Now let us inspect the [unknown segments between

diff --git a/_posts/2024-05-06-finding-something-unexpected.markdown b/_posts/2024-05-06-finding-something-unexpected.markdown
@@ -2,6 +2,7 @@
 title: Finding something unexpected
 image: /img/un3_1_int.png
 description: We find coordinates of highways and borders instead of tile coordinates.
+tags: ["dsat", "coordinates"]
 ---
 
 After having [visualised the "uncharted" parts of

diff --git a/_posts/2024-05-11-visualising-entropy.markdown b/_posts/2024-05-11-visualising-entropy.markdown
@@ -2,6 +2,7 @@
 title: Visualising Entropy
 description: Understanding how the tile index works and how tiles are arranged in the file.
 image: /img/ve_tiles1000_165x250.png
+tags: ["dsat", "tiles"]
 ---
 
 Our quest to [find the tile index of D-Sat 1](/2024/04/23/searching-for-the-index.html) continues. [I have described before, what I mean with "tile index"](/2024/05/06/finding-something-unexpected.html) and I have also given a clue that I found something in the first part of the big blob of data `dsatnord.mp` which I named `un1.dat`.

diff --git a/_posts/2024-06-27-documenting-the-file-format.markdown b/_posts/2024-06-27-documenting-the-file-format.markdown
@@ -2,6 +2,7 @@
 title: Documenting the file format
 description: Using Kaitai Struct I can describe the file format and generate code and visualizations.
 image: /img/dsat_kaitai.png
+tags: ["dsat", "cis/cod"]
 ---
 
 Since [the first post on decoding the city

diff --git a/_posts/2024-07-04-finding-something-unexpected-again.markdown b/_posts/2024-07-04-finding-something-unexpected-again.markdown
@@ -2,6 +2,7 @@
 title: Finding something unexpected again
 image: /img/aachen.png
 description: To much surprise, content in a well-known file format is discovered while inspecting uncharted territories.
+tags: ["dsat"]
 ---
 
 This week I was poking around in the few remaining unknown territories

diff --git a/_posts/2024-07-21-fragmenting-the-tile-data.markdown b/_posts/2024-07-21-fragmenting-the-tile-data.markdown
@@ -2,6 +2,7 @@
 title: Fragmenting the tile data
 image: /img/subband_sizes_tiles1000.png
 description: Looking at some statistics about the structure of the tile data we learn something about the underlying wavelet compression.
+tags: ["cis/cod", "tiles"]
 ---
 
 When looking at the data segment of [CIS/COD