View source for PWS Drifter Realtime Webpage Info

<h1>Prince William Sound, Alaska Drifter Realtime Webpage Wiki</h1>

Page can be found at: [http://pws.drifterdata.com http://pws.drifterdata.com] or [http://www.icess.ucsb.edu/drifter/realtime-PWS/ http://www.icess.ucsb.edu/drifter/realtime-PWS/], and it's help page [http://www.icess.ucsb.edu/drifter/realtime-PWS/help/ here]. Other deployment info can be found [http://ak.aoos.org/aoos/fieldexp/data_by_pi-researcher.html here].
<br>
This page is for displaying any Surface Velocity Program (SVP) in blue, Coast Guard SLDB (CG) in green, and Oil Spill Response (OSR) in red drifter tracks. The Iridium drifters will be on the normal [http://www.icess.ucsb.edu/drifter/realtime/ realtime page].<br>

<h2>File Locations</h2>
The data files must be uploaded (e.g. via ftp or sftp, for Mac one can use [http://filezilla-project.org/download.php filezilla]) to the ICESS network in this directory: '''/home/locl/file_sharing/PWS/'''.  The filenames must be '''PWS_SVP_DATA.txt''' (SVP), '''PWS_CG_DATA.txt''' (Coast Guard), and '''PWS_OIL_DATA.txt''' (OSR).  There are README files there to help with formatting. To not show a particular group's data, either empty the contents of the appropriate file or delete (or rename) it.<br>
<br>
There is also a '''BOX_COORDINATES.txt''' there (and README file) for setting coordinates for a box. <br>

<h2>File Formats</h2>
One thing to note is that fields which normally have a number must have a number, with the exception of SST which can instead have a "NaN".  We really only care about 5 things ('''drifter_number, date/time, lat, lon, & SST'''), so if any of those other 4 fields are a "NaN" it should be skipped anyway since they contain critical information.  As for any "non critical" columns, (e.g. "FoM" or "Batt volts" [if we set that up to be a valid column] or whatever) can contain anything since we're ignoring those columns anyway.<br>
<br>
1) SVP.  The info [http://penguin.sfos.uaf.edu/output/pws/Halverson/SVP/ASCII/20090409/ here]
still doesn't show which column will have the drifter number, so for now, I'm assuming it will be the first.<br>
e.g.
<pre>
% Pacific Gyre SVP  -   Drogue center: 10m   -  ARGOS telemetry
%  Drifter #  Date/Time (UTC)   Lat      Lon   FoM SST [C]
1234  2009/04/09 22:30:00 60.5503 -145.7611 1 5.0
</pre>
2) Coast Guard SLDMBs
The email from Rob Cermak on Jul 9th @ 17:39 has 
[http://penguin.sfos.uaf.edu/output/pws/Ohlmann/SLDMBS/GNOME/20090528/SLDMBS_20090528_0823_processed.txt this link]
<br>
Right now, this is the format it's ready for this type format:
<pre>
Shape|OBJECTID|Buoynum|ZDateTime|DateTime|Location
|1|38669|232030Z MAY 09|39956.85|20-57.453N  071-20.205W
</pre>

3) Oil Spill Resp.
For now it's setup to be exactly in the same format as the SVP (but with one header line instead of two)

e.g.
<pre>
%  Drifter #  Date/Time (UTC)   Lat      Lon   FoM SST [C]
1234  2009/04/09 22:30:00 60.5503 -145.7611 1 5.0 
</pre>

<h2>Parsing Files</h2>
The webpage code and parsing scripts all live here: '''/home/kirk/public_html/drifter/realtime-PWS/'''.  The parsing scripts (those which breakdown the uploaded files) are named '''getdata.SVP.php''', '''getdata.CG.php''', and '''getdata.OSR.php'''.  They are pretty self explanatory if they need to be edited for any reason. One thing to note is that they use [http://us.php.net/manual/en/reference.pcre.pattern.syntax.php regular expression] (i.e. preg_match) checking to ensure that any misformatted data is skipped.

<h2>Other Notes</h2>
If for some reason, the javascript code needs to be edited, it's at '''/home/kirk/public_html/drifter/realtime-PWS/''', and there are 2 main javascript files: '''ajax.js''', '''map.js''' (with 'message.js' and 'YFT.js' providing less important support).  Note that really, you want to edit the javascript files with __UNCOMPRESSED__ in their name (as the files w/o that in their name were compressed using [http://dean.edwards.name/packer/ this tool]).  If you want to use these uncompressed files, you need to edit the '''index.php''' file and set '''$USE_UNCOMPRESSED''' to '''1'''.

<h2>Iridium Notes</h2>
These will show on the normal [http://www.icess.ucsb.edu/drifter/realtime/ realtime page]. If the drifter numbers to receive data for need tweaking, this file, '''/home/kirk/public_html/drifter/realtime/getdata.php''', needs to be edited around line 425. Or to show more or less hour's worth of reports, edit the '''$NUM_HRS_TO_GET''' value on line 40 (currently set to 12).