@@ -138,14 +138,14 @@ Flight data is imported with the function \texttt{Flight::load()}. This function From\_files works by generating tuples of the form \texttt{[unix time, ...]} from the ITT data and the insitu data. These tuples are transformed into hashes with the timestamp as the key. This allows them to be easily merged for a given second. Only datapoints with ITT data are of interest, so all tuples with fewer than 10 elements are discarded. -The DataPoints are then created for the tuples. +The DataPoints are then created for the tuples. In line 18, \texttt{dp[5]} is the side sensor and \texttt{dp[2]} is the side reference sensor. This sensors used can be changed according to the tuple format documented in the code. \begin{code}{from-files2}{Creating DataPoints} ### @include "../models/data_point.rb" "Create DataPoints" ### @end \end{code} -ITT data is read from the \texttt{*.dbl} files in the \texttt{itt/} directory. Each file is read as a series of records consisting of 9 8-byte double-precisionnumbers in little-endian byte format. These are unpacked into an array. The data\_points tuple is constructed by trimming the dat array. The timestamps are taken from 1904, so the \texttt{EPOCH\_FAIL} (bad pun) constant is subtracted to put them into standard unix time. The data\_points are then averaged to the nearest second from the sample rate of 5Hz. +ITT data are read from the \texttt{*.dbl} files in the \texttt{itt/} directory. Each file is read as a series of records consisting of 9 8-byte double-precisionnumbers in little-endian byte format. These are unpacked into an array. The data\_points tuple is constructed by trimming the dat array. The timestamps are taken from 1904, so the \texttt{EPOCH\_FAIL} (bad pun) constant is subtracted to put them into standard unix time. The data\_points are then averaged to the nearest second from the sample rate of 5Hz. \begin{code}{from-itt-data}{From ITT DataPoints} ### @include "../models/data_point.rb" "From ITT DataPoints" documents/design.tex @@ -0,0 +1 @@ +foo hysplit_model_output/.gitignore 6eb3effa4024e67494d6014d0ee0669cd1d9658e Ben Hughes ben@pixelmachine.org http://github.com/schleyfox/ascends_viz/commit/023d6ab0c5245083fc45284a82267010de0af576 023d6ab0c5245083fc45284a82267010de0af576 2008-08-06T13:52:59-07:00 2008-08-06T13:52:59-07:00 Updated gitignore settings 9588fe7b1edce0fabc2229681d7842452093c43d Ben Hughes ben@pixelmachine.org