#!/usr/bin/env python
# Last modified:  Time-stamp: <2009-10-29 17:12:47 haines>
"""jpier_adcp_plot"""

import os, sys
import datetime, time, dateutil, dateutil.tz
import pycdf
import numpy

sys.path.append('/home/haines/nccoos/raw2proc')
del(sys)

os.environ["MPLCONFIGDIR"]="/home/haines/.matplotlib/"

from pylab import figure, twinx, savefig, setp, getp, cm, colorbar
from matplotlib.dates import DayLocator, HourLocator, MinuteLocator, DateFormatter, date2num, num2date
import procutil

print 'jpier_adcp_plot ...'
prev_month, this_month, next_month = procutil.find_months(procutil.this_month())
# ncFile1='/seacoos/data/nccoos/level1/jpier/adcp/jpier_adcp_2008_01.nc'
# ncFile2='/seacoos/data/nccoos/level1/jpier/adcp/jpier_adcp_2008_02.nc'
ncFile1='/seacoos/data/nccoos/level1/jpier/adcp/jpier_adcp_'+prev_month.strftime('%Y_%m')+'.nc'
ncFile2='/seacoos/data/nccoos/level1/jpier/adcp/jpier_adcp_'+this_month.strftime('%Y_%m')+'.nc'

have_ncFile1 = os.path.exists(ncFile1)
have_ncFile2 = os.path.exists(ncFile2)

print ' ... loading data for graph from ...'
print ' ... ... ' + ncFile1 + ' ... ' + str(have_ncFile1)
print ' ... ... ' + ncFile2 + ' ... ' + str(have_ncFile2)

if have_ncFile1 and have_ncFile2:
    nc = pycdf.CDFMF((ncFile1, ncFile2))
elif not have_ncFile1 and have_ncFile2:
    nc = pycdf.CDFMF((ncFile2,))
elif have_ncFile1 and not have_ncFile2:
    nc = pycdf.CDFMF((ncFile1,))
else:
    print ' ... both files do not exist -- NO DATA LOADED'
    return

ncvars = nc.variables()
# print ncvars
es = nc.var('time')[:]
units = nc.var('time').units
dt = [procutil.es2dt(e) for e in es]
# set timezone info to UTC (since data from level1 should be in UTC!!)
dt = [e.replace(tzinfo=dateutil.tz.tzutc()) for e in dt]
# return new datetime based on computer local
dt_local = [e.astimezone(dateutil.tz.tzlocal()) for e in dt]
dn = date2num(dt)
z = nc.var('z')[:]
wd = nc.var('wd')[:]
wl = nc.var('wl')[:]
u = nc.var('u')[:]
v = nc.var('v')[:]
nc.close()

# range for pcolor plots
cmin, cmax = (-0.5, 0.5)
# last dt in data for labels
dt1 = dt[-1]
dt2 = dt_local[-1]

diff = abs(dt1 - dt2)
if diff.days>0:
    last_dt_str = dt1.strftime("%H:%M %Z on %b %d, %Y") + ' (' + dt2.strftime("%H:%M %Z, %b %d") + ')'
else:
    last_dt_str = dt1.strftime("%H:%M %Z") + ' (' + dt2.strftime("%H:%M %Z") + ')' \
              + dt2.strftime(" on %b %d, %Y")

fig = figure(figsize=(10, 8))
fig.subplots_adjust(left=0.1, bottom=0.1, right=0.9, top=0.9, wspace=0.1, hspace=0.1)

#######################################
# Last 30 days
#######################################
print ' ... Last 30 days'
ax = fig.add_subplot(4,1,1)
axs = [ax]

# testing procutil.addnan for 2-d
# dto = dt
# (dt, u) = procutil.addnan(dt, u)
# dn = date2num(dt)

# use masked array to hide NaN's on plot
um = numpy.ma.masked_where(numpy.isnan(u), u)
pc = ax.pcolor(dn, z, um.T, vmin=cmin, vmax=cmax)
pc.set_label('True Eastward Current (m s-1)')
ax.text(0.025, 0.1, pc.get_label(), fontsize="small", transform=ax.transAxes)

# setup colorbar axes instance.
l,b,w,h = ax.get_position().bounds
cax = fig.add_axes([l, b+h+0.04, 0.25*w, 0.03])

cb = colorbar(pc, cax=cax, orientation='horizontal') # draw colorbar
cb.set_label('Current Velocity (m s-1)')
cb.ax.xaxis.set_label_position('top')
cb.ax.set_xticks([0.1, 0.3, 0.5, 0.7, 0.9])
cb.ax.set_xticklabels([-0.4, -0.2, 0, 0.2, 0.4])

# ax.plot returns a list of lines, so unpack tuple
(x, y) = procutil.addnan(dt, wl, maxdelta=2./24)
l1, = ax.plot_date(x, y, fmt='k-')
l1.set_label('Water Level')

ax.set_ylabel('Depth (m)')
ax.set_ylim(-14.,2.)
# ax.set_xlim(dt[0], dt[-1]) # first to last regardless of what  
ax.set_xlim(date2num(dt[-1])-30, date2num(dt[-1])) # last minus 30 days to last
ax.xaxis.set_major_locator( DayLocator(range(2,32,2)) )
ax.xaxis.set_minor_locator( HourLocator(range(0,25,12)) )
ax.set_xticklabels([])

# this only moves the label not the tick labels
ax.xaxis.set_label_position('top')
ax.set_xlabel('Jpier AWAC -- Last 30 days from ' + last_dt_str)

# right-hand side scale
ax2 = twinx(ax)
ax2.yaxis.tick_right()
# convert (lhs) meters to (rhs) feet
feet = [procutil.meters2feet(val) for val in ax.get_ylim()]
ax2.set_ylim(feet)
ax2.set_ylabel('Depth (ft)')

# legend
ls1 = l1.get_label()
leg = ax.legend((l1,), (ls1,), loc='upper left')
ltext  = leg.get_texts()  # all the text.Text instance in the legend
llines = leg.get_lines()  # all the lines.Line2D instance in the legend
frame  = leg.get_frame()  # the patch.Rectangle instance surrounding the legend
frame.set_facecolor('0.80')      # set the frame face color to light gray
frame.set_alpha(0.5)             # set alpha low to see through
setp(ltext, fontsize='small')    # the legend text fontsize
setp(llines, linewidth=1.5)      # the legend linewidth
# leg.draw_frame(False)           # don't draw the legend frame

#######################################
#
ax = fig.add_subplot(4,1,2)
axs.append(ax)

# use masked array to hide NaN's on plot
vm = numpy.ma.masked_where(numpy.isnan(v), v)
pc = ax.pcolor(dn, z, vm.T, vmin=cmin, vmax=cmax)
pc.set_label('True Northward Current (m s-1)')
ax.text(0.025, 0.1, pc.get_label(), fontsize="small", transform=ax.transAxes)

# ax.plot returns a list of lines, so unpack tuple
(x, y) = procutil.addnan(dt, wl, maxdelta=2./24)
l1, = ax.plot_date(x, y, fmt='k-')
l1.set_label('Water Level')

ax.set_ylabel('Depth (m)')
ax.set_ylim(-14.,2.)
# first to last regardless of what
# ax.set_xlim(dt[0], dt[-1])
# last minus 30 days, 
ax.set_xlim(date2num(dt[-1])-30, date2num(dt[-1]))
ax.xaxis.set_major_locator( DayLocator(range(2,32,2)) )
ax.xaxis.set_minor_locator( HourLocator(range(0,25,12)) )
ax.xaxis.set_major_formatter( DateFormatter('%m/%d') )

ax.set_xlabel('Jpier AWAC -- Last 30 days from ' + last_dt_str)

# right-hand side scale
ax2 = twinx(ax)
ax2.yaxis.tick_right()
# convert (lhs) meters to (rhs) feet
feet = [procutil.meters2feet(val) for val in ax.get_ylim()]
ax2.set_ylim(feet)
ax2.set_ylabel('Depth (ft)')

# legend
ls1 = l1.get_label()
leg = ax.legend((l1,), (ls1,), loc='upper left')
ltext  = leg.get_texts()  # all the text.Text instance in the legend
llines = leg.get_lines()  # all the lines.Line2D instance in the legend
frame  = leg.get_frame()  # the patch.Rectangle instance surrounding the legend
frame.set_facecolor('0.80')      # set the frame face color to light gray
frame.set_alpha(0.5)             # set alpha low to see through
setp(ltext, fontsize='small')    # the legend text fontsize
setp(llines, linewidth=1.5)      # the legend linewidth
# leg.draw_frame(False)           # don't draw the legend frame

# save figure
savefig('/home/haines/rayleigh/img/jpier_adcp_last30days.png')

#######################################
# Last 7 days
#######################################

print ' ... Last 7 days'
ax = axs[0]
ax.set_xlim(date2num(dt[-1])-7, date2num(dt[-1]))
ax.xaxis.set_major_locator( DayLocator(range(1,32,1)) )
ax.xaxis.set_minor_locator( HourLocator(range(0,25,6)) )
ax.set_xticklabels([])
ax.set_xlabel('Jpier AWAC -- Last 7 days from ' + last_dt_str)

ax = axs[1]
ax.set_xlim(date2num(dt[-1])-7, date2num(dt[-1]))
ax.xaxis.set_major_locator( DayLocator(range(2,32,1)) )
ax.xaxis.set_minor_locator( HourLocator(range(0,25,6)) )
ax.xaxis.set_major_formatter( DateFormatter('%m/%d') )
ax.set_xlabel('Jpier AWAC -- Last 7 days from ' + last_dt_str)

savefig('/home/haines/rayleigh/img/jpier_adcp_last07days.png')

#######################################
# Last 1 day (24hrs)
#######################################

print ' ... Last 1 days'

ax = axs[0]
ax.set_xlim(date2num(dt[-1])-1, date2num(dt[-1]))
ax.xaxis.set_major_locator( HourLocator(range(0,25,1)) )
ax.xaxis.set_minor_locator( MinuteLocator(range(0,61,30)) )
ax.set_xticklabels([])
ax.set_xlabel('Jpier AWAC -- Last 24 hours from ' + last_dt_str)

ax = axs[1]
ax.set_xlim(date2num(dt[-1])-1, date2num(dt[-1]))
ax.xaxis.set_major_locator( HourLocator(range(0,25,1)) )
ax.xaxis.set_minor_locator( MinuteLocator(range(0,61,30)) )
ax.xaxis.set_major_formatter( DateFormatter('%H') )
ax.set_xlabel('Jpier AWAC -- Last 24 hours from ' + last_dt_str)

savefig('/home/haines/rayleigh/img/jpier_adcp_last01days.png')