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Code Issues 18 Projects 3 Activity

more explanation of early years

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Philip Sargent
2025-10-31 12:48:10 +02:00
parent e39037b333
commit 5b53264316
1 changed files with 5 additions and 5 deletions
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templates/statistics.html
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@@ -12,13 +12,11 @@ Total length: {{adduplength}} km adding up the total for each year.</p>
<p>These lengths are not authoritative.
<p>These are <em>uncorrected</em> tape lengths.They are uncorrected
because they are lengths <em>before</em> any loop-closure corrections done by survex and because they <em>include duplicated surveys</em>. These numbers include pitches but exclude splays or surface-surveys.
<p>Authoritative survey lengths for each cave, as explored by expo participants, are calculated using <a href="/handbook/troggle/cavelengths.html">a script</a> which
because they are lengths <em>before</em> any loop-closure corrections done by survex and because they <em>include duplicated surveys</em>. These numbers include pitches but exclude splays or surface-surveys. <br />
Authoritative survey lengths for each cave, as explored by expo participants, are calculated using <a href="/handbook/troggle/cavelengths.html">a script</a> which
<ol><li>uses the
<em>loop-closure corrected</em> lengths
<li>is manually curated to exclude duplicate surveys of the same cave,
<li>and to include only surveys by expo participants.
<li>is manually curated to exclude duplicate surveys of the same cave.
</ol>
These authoritative results are maintained
@@ -43,6 +41,8 @@ legsbyexpo: ((expedition, {"success":success, "people": expoers, "tourists": to
{% endfor %}
</table>
<p>One Survex Survey Block is one *begin/*end block of data in a survex file. Different survex blocks in the same survex file can have different dates and surveyors.
<p>Both this table and the authoritative script exclude survex files where there is no expo participant listed as a surveyor.
<p>In the early years survex was not used and the survex files have been hand-edited from earlier survey formats. The survex files and lengths recorded need checking for the 1980s and 1990s.
<p>The number of cavers excludes those attending who were not caving. This is something of a distortion as non-cavers
may still be doing useful expo-related work such as prospecting, ferrying gear and preparing food.
Non-cavers also include the bier tent and Rover Richardson, see <a href="/folk/index.html">the folk list</a> for details.