i forgot to mention what might be the easiest option (assuming that you do
not mind the XWindows-circa-1990s look) - just use the image that xtide
emits.
once again, write a TideGenerator, but all you do is invoke xtide with args
to emit an image. then include that image in your templates.
put something like this in user/tidegen.py:
import syslog
import subprocess
import weewx.reportengine
# emit image as PNG
cmd = "/usr/bin/tide -l LOCATION -f p -o OUTPUTFILE.png"
class TideGenerator(weewx.reportengine.ReportGenerator):
def run(self):
try:
# run xtide, capture the stdout and stderr
p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIP,
stderr=subprocess.PIPE)
rc = p.returncode
if rc is not None:
syslog.syslog(syslog.LOG_ERR, "tide failed with return code
%s" % rc)
else:
for line in p.stderr:
syslog.syslog(syslog.LOG_ERR, "xtide: %s" % line)
except OSError, e:
syslog.syslog(syslog.LOG_ERR, "xtide failed: %s" % e)
and you use it like this:
[Generators]
generator_list = ..., user.TideGenerator
in your skin.conf, then include the image in your .tmpl file(s)
m
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