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some clarifications
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rjoberon committed May 7, 2024
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8 changes: 4 additions & 4 deletions _posts/2024-05-06-finding-somehing-unexpected.markdown
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Expand Up @@ -62,9 +62,9 @@ Again, we can visualise the results to check whether we split the file correctly
The results (not shown here) look good.

Now my assumption was that the index contains a record (with the
coordinates and possibly other information) for each tile. I started
with the second part (`un3_2.dat`) since it showed quite some
regularity and performed different analyses to test that
coordinates and possibly other information) of fixed length for each
tile. I started with the second part (`un3_2.dat`) since it showed
quite some regularity and performed different analyses to test that
hypothesis. Among those were:

1. Creating successive n-byte ints/floats and visualising their
Expand Down Expand Up @@ -211,7 +211,7 @@ respectively, we get the following map:
![](/img/un3_1_float_color.png)

So 0 seems to encode highways, 1 state borders, and 3 the border of
Germany (with some exceptions in the west).
Germany (with some exceptions mainly in the west).

Although for the part `un3_2` we analysed here there are still 7 bytes
left to decode for each record, overall, this is a big step forward to
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