def getGridData(fileID, key):
fileMeta = rmn.fstprm(key)
fileMeta['iunit'] = fileID
gridMeta = rmn.ezqkdef(fileMeta)
gridData = rmn.gdll(gridMeta)
lonData = gridData['lon'].tolist()
latData = gridData['lat'].tolist()
return gridData, lonData, latData
def test_ezqkdef_gdll(self):
gp = self.getGridParams_L()
gid1 = rmn.ezqkdef(gp)
self.assertTrue(gid1>=0)
gll = rmn.gdll(gid1)
self.assertEqual(gp['shape'],gll['lat'].shape)
self.assertEqual(gp['shape'],gll['lon'].shape)
self.assertEqual(gp['lat0'],gll['lat'][0,0])
self.assertEqual(gp['lon0'],gll['lon'][0,0])
rmn.gdrls(gid1)
def getGrid(dataKey):
fileMeta = rmn.fstprm(dataKey)
fileMeta['iunit'] = fileID #add to dictionary as key,val pair
gridData = rmn.ezqkdef(fileMeta)
gridDecode = rmn.decodeGrid(gridData) #use this for information, not really needed if just getting all lat lon values, but can get bottom left corner if needed for something else
llGridData = rmn.gdll(gridData) # is a dictionary of two arrays for lat and lon
latData = llGridData['lat']
lonData = llGridData['lon']
return latData, lonData
def test_ezqkdef_gdll(self):
gp = self.getGridParams_L()
gid1 = rmn.ezqkdef(gp)
self.assertTrue(gid1>=0)
gll = rmn.gdll(gid1)
self.assertEqual(gp['shape'],gll['lat'].shape)
self.assertEqual(gp['shape'],gll['lon'].shape)
self.assertEqual(gp['lat0'],gll['lat'][0,0])
self.assertEqual(gp['lon0'],gll['lon'][0,0])
rmn.gdrls(gid1)
def getGrid(dataKey, fileID):
try:
fileMeta = rmn.fstprm(dataKey)
fileMeta['iunit'] = fileID
gridData = rmn.ezqkdef(fileMeta)
llGridData = rmn.gdll(gridData)
latData = llGridData['lat'].tolist()
lonData = llGridData['lon'].tolist()
return lonData, latData, gridData
except:
print('ERROR: Could not get grid. Please try again.')
def getNiNj(lonVal, latVal, gridID):
xypos = rmn.gdxyfll(gridID, latVal, lonVal)
ni = int(round(xypos['x'])) - 1 #-1 to use 0 as list index
nj = int(round(xypos['y'])) - 1
gridData = rmn.gdll(gridID)
if ni >= len(gridData['lon']) or nj >= len(gridData['lon'][0]):
print(
'lon lat values of station outside of grid domain. Please check your values.'
)
return None
else:
return ni, nj
def getGrid(dataKey, fileID):
""" Get the grid details in form of lon/lat of the FST file. """
# Get the file metadata, then add on the keypair for 'iunit'
fileMeta = rmn.fstprm(dataKey)
fileMeta['iunit'] = fileID
# Get the grid data and decode it
gridData = rmn.ezqkdef(fileMeta)
gridDecode = rmn.decodeGrid(gridData)
llGridData = rmn.gdll(gridData)
latData = llGridData['lat']
lonData = llGridData['lon']
return {'gridll':llGridData,'gridID':gridData, 'latData':latData,'lonData':lonData}
def ezgetlalo(nij, grtyp, refparam, xyAxis, hasAxis, ij0, doCorners):
"""Get Lat-Lon of grid points centers and corners
(lat, lon, clat, clon) = Fstdc.ezgetlalo((niS, njS), grtypS, (grrefS, ig1S, ig2S, ig3S, ig4S), (xsS, ysS), hasSrcAxis, (i0S, j0S), doCorners)
@param ...TODO...
@return tuple of (numpy.ndarray) with center lat/lon (lat, lon) and optionally corners lat/lon (clat, clon)
@exception TypeError
@exception Fstdc.error
"""
try:
gid = _getGridHandle(nij[0], nij[1], grtyp,
refparam[0], refparam[1], refparam[2],
refparam[3], refparam[4],
ij0[0], ij0[1], xyAxis[0], xyAxis[1])
except:
raise error("ezgetlalo: Invalid Grid Desc")
try:
gridLaLo = _rmn.gdll(gid);
except:
raise error("ezgetlalo: Problem computing lat, lon in ezscint")
if not doCorners:
return (gridLaLo['lat'], gridLaLo['lon'])
xyc = _rmn.gdxyfll(gid, gridLaLo['lat'], gridLaLo['lon'])
xc1 = xyc['x']
yc1 = xyc['y']
nij2 = (4, gridLaLo['lat'].shape[0], gridLaLo['lat'].shape[1])
xc4 = _np.empty(nij2, dtype=_np.float32, order='FORTRAN')
yc4 = _np.empty(nij2, dtype=_np.float32, order='FORTRAN')
## x = _np.arange(float(nij2[1]))
## y = _np.arange(float(nij2[2]))
## fx = interpolate.interp2d(x, y, xc1, kind='linear', copy=False)
## fy = interpolate.interp2d(x, y, yc1, kind='linear', copy=False)
dij_corners = (
(-0.5, -0.5), #SW
(-0.5, 0.5), #NW
( 0.5, 0.5), #NE
( 0.5, -0.5) #SE
)
for icorner in range(4):
di = dij_corners[icorner][0]
dj = dij_corners[icorner][1]
## xnew = x.copy('FORTRAN') + dij_corners[icorner][0]
## ynew = y.copy('FORTRAN') + dij_corners[icorner][1]
## xc4[icorner, :, :] = fx(xnew, ynew)
## yc4[icorner, :, :] = fy(xnew, ynew)
xc4[icorner, :, :] = xc1[:, :] + dij_corners[icorner][0]
yc4[icorner, :, :] = yc1[:, :] + dij_corners[icorner][1]
llc = _rmn.gdllfxy(gid, xc4, yc4)
return (gridLaLo['lat'], gridLaLo['lon'], llc['lat'], llc['lon'])
def ezgetlalo(nij, grtyp, refparam, xyAxis, hasAxis, ij0, doCorners):
"""Get Lat-Lon of grid points centers and corners
(lat, lon, clat, clon) = Fstdc.ezgetlalo((niS, njS), grtypS, (grrefS, ig1S, ig2S, ig3S, ig4S), (xsS, ysS), hasSrcAxis, (i0S, j0S), doCorners)
@param ...TODO...
@return tuple of (numpy.ndarray) with center lat/lon (lat, lon) and optionally corners lat/lon (clat, clon)
@exception TypeError
@exception Fstdc.error
"""
try:
gid = _getGridHandle(nij[0], nij[1], grtyp,
refparam[0], refparam[1], refparam[2],
refparam[3], refparam[4],
ij0[0], ij0[1], xyAxis[0], xyAxis[1])
except:
raise error("ezgetlalo: Invalid Grid Desc")
try:
gridLaLo = _rmn.gdll(gid);
except:
raise error("ezgetlalo: Problem computing lat, lon in ezscint")
if not doCorners:
return (gridLaLo['lat'], gridLaLo['lon'])
xyc = _rmn.gdxyfll(gid, gridLaLo['lat'], gridLaLo['lon'])
xc1 = xyc['x']
yc1 = xyc['y']
nij2 = (4, gridLaLo['lat'].shape[0], gridLaLo['lat'].shape[1])
xc4 = _np.empty(nij2, dtype=_np.float32, order='FORTRAN')
yc4 = _np.empty(nij2, dtype=_np.float32, order='FORTRAN')
## x = _np.arange(float(nij2[1]))
## y = _np.arange(float(nij2[2]))
## fx = interpolate.interp2d(x, y, xc1, kind='linear', copy=False)
## fy = interpolate.interp2d(x, y, yc1, kind='linear', copy=False)
dij_corners = (
(-0.5, -0.5), #SW
(-0.5, 0.5), #NW
( 0.5, 0.5), #NE
( 0.5, -0.5) #SE
)
for icorner in xrange(4):
di = dij_corners[icorner][0]
dj = dij_corners[icorner][1]
## xnew = x.copy('FORTRAN') + dij_corners[icorner][0]
## ynew = y.copy('FORTRAN') + dij_corners[icorner][1]
## xc4[icorner, :, :] = fx(xnew, ynew)
## yc4[icorner, :, :] = fy(xnew, ynew)
xc4[icorner, :, :] = xc1[:, :] + dij_corners[icorner][0]
yc4[icorner, :, :] = yc1[:, :] + dij_corners[icorner][1]
llc = _rmn.gdllfxy(gid, xc4, yc4)
return (gridLaLo['lat'], gridLaLo['lon'], llc['lat'], llc['lon'])
def getNiNj(lonVal, latVal, gridID):
""" Get the ni,nj position in a grid for a given lon/lat value.
Function returns None if lon/lat value is out of bounds.
"""
xypos = rmn.gdxyfll(gridID, latVal, lonVal)
ni = int(math.floor(xypos['x'])) - 1 #-1 to use 0 as list index
nj = int(math.floor(xypos['y'])) - 1
gridData = rmn.gdll(gridID)
if ni >= len(gridData['lon']) or nj >= len(gridData['lon'][0]):
print(
'lon lat values of station outside of grid domain. Please check your values.'
)
return None
else:
return ni, nj
def getMeta(filePath, level, spc):
try:
fileID = rmn.fstopenall(filePath,rmn.FST_RO)
dataKey = rmn.fstinf(fileID,nomvar=spc,ip1=level)['key']
dataRec = rmn.fstluk(dataKey)
# get the concentration data
concData = dataRec['d']
fileMeta = rmn.fstprm(dataKey)
fileMeta['iunit'] = fileID
gridData = rmn.ezqkdef(fileMeta)
gridDecode = rmn.decodeGrid(gridData)
# get the lonlat data
llGridData = rmn.gdll(gridData)
latData = llGridData['lat']
lonData = llGridData['lon']
return concData, lonData.tolist(), latData.tolist()
except:
print('Could not read file.')
pass
def getConc(filePath, level, spc):
""" Get the concentration data for an FST file.
Returns the data in an array, the datakey as a key and the fileID of the FST file.
"""
try:
fileID = rmn.fstopenall(filePath,rmn.FST_RO)
dataKey = rmn.fstinf(fileID,nomvar=spc,ip1=level)['key']
dataRec = rmn.fstluk(dataKey)
concData = dataRec['d']
fileMeta = rmn.fstprm(dataKey)
fileMeta['iunit']=fileID
gridData = rmn.ezqkdef(fileMeta)
llGridData = rmn.gdll(gridData)
print ('File {} recorded'.format(filePath))
rmn.fstcloseall(fileID)
return concData,llGridData
except TypeError:
# log an error into the log file
#logging.warning('nomvar {} and ip1 {} could not be found for file {}.'.format(fileID, spc, level, filePath))
return None
def read_fst(file, var, level, fhour, yy):
global field
global lat
global lon
print var
print level
print fhour
print yy
try:
file = rmn.fstopenall(file, rmn.FST_RO)
except:
sys.stderr.write("Problem opening the file: %s\n" % file)
###Read in lat/lon data###
# Prefered method to get grid lat, lon. Works on any RPNSTD grid except 'x'
#####
try:
rec = rmn.fstlir(file, nomvar=var)
except:
sys.stderr.write('Error: Problem reading fields ' + var +
' in file: ' + file + '\n')
sys.exit(1)
try:
rec['iunit'] = file
gridid = rmn.ezqkdef(rec) # use ezscint to retreive full grid
gridLatLon = rmn.gdll(gridid)
lat = gridLatLon['lat']
lon = gridLatLon['lon']
if yy == True:
print "This grid is Yin-Yang and the lat/lon arrays need to be constructed from the 2 subgrids"
lat1 = gridLatLon['subgrid'][0]['lat']
lat2 = gridLatLon['subgrid'][1]['lat']
lon1 = gridLatLon['subgrid'][0]['lon']
lon2 = gridLatLon['subgrid'][1]['lon']
lat = np.append(lat1, lat2, axis=1)
lon = np.append(lon1, lon2, axis=1)
except:
sys.stderr.write('Error: Problem getting grid info in file')
sys.exit(1)
######
######
try:
#Get vertical grid definition from file
v = vgd.vgd_read(file)
#Get the list of ip1 on thermo levels in this file
#tlvl = vgd.vgd_get(v, 'VIPT')
tlvl = level
# Trim the list of thermo ip1 to actual levels in files for TT
# since the vgrid in the file is a super set of all levels
# and get their "key"
tlvlkeys = []
rshape = None
#for ip1 in tlvl:
(lval, lkind) = rmn.convertIp(rmn.CONVIP_DECODE, level)
key = rmn.fstinf(file,
nomvar=var,
ip2=fhour,
ip1=rmn.ip1_all(lval, lkind))
if key is not None:
tlvlkeys.append((level, key['key']))
if rshape is None:
rshape = key['shape']
rshape = (rshape[0], rshape[1], len(tlvlkeys))
r2d = {'d': None}
r3d = None
k = 0
try:
r2d = rmn.fstluk(key, dataArray=r2d['d'])
if r3d is None:
r3d = r2d.copy()
r3d['d'] = np.empty(rshape,
dtype=r2d['d'].dtype,
order='FORTRAN')
r3d['d'][:, :, k] = r2d['d'][:, :]
k += 1
except:
raise
except:
raise
finally:
# Close file even if an error occured above
rmn.fstcloseall(file)
# Add the vgrid and the actual ip1 list in the r3d dict, update shape and nk
r3d['vgd'] = v
r3d['ip1list'] = [x[0] for x in tlvlkeys]
r3d['shape'] = rshape
r3d['nk'] = rshape[2]
field = r3d['d']
return (field, lat, lon)
###Read in lat/lon data###
# Prefered method to get grid lat, lon. Works on any RPNSTD grid except 'x'
#####
try:
rec = rmn.fstlir(file, nomvar=var)
except:
sys.stderr.write('Error: Problem reading fields ' + var + ' in file: ' +
file + '\n')
sys.exit(1)
try:
rec['iunit'] = file
gridid = rmn.ezqkdef(rec) # use ezscint to retreive full grid
gridLatLon = rmn.gdll(gridid)
lat = gridLatLon['lat']
lon = gridLatLon['lon']
except:
sys.stderr.write('Error: Problem getting grid info in file')
sys.exit(1)
######
######
try:
#Get vertical grid definition from file
v = vgd.vgd_read(file)
#Get the list of ip1 on thermo levels in this file
#tlvl = vgd.vgd_get(v, 'VIPT')
tlvl = level
import os import rpnpy.librmn.all as rmn defaultIp1=76696048 defaultSpc='TO3' defaultFile='2010071000_001' level=defaultIp1 spc=defaultSpc fileName = defaultFile fileID = rmn.fstopenall(fileName, rmn.FST_RO) dataKey = rmn.fstinf(fileID, nomvar=spc, ip1=level)['key'] dataRec = rmn.fstluk(dataKey) concData = dataRec['d'] fileMeta = rmn.fstprm(dataKey) fileMeta['iunit'] = fileID gridData = rmn.ezqkdef(fileMeta) llGridData = rmn.gdll(gridData) latData = llGridData['lat'] lonData = llGridData['lon'] ni = dataRec['ni'] nj = dataRec['nj'] n_pil=0 #crop the number of points from top/bot ## ToDo: # find way to calculate width, height based on data available # Adjust so there are projection options # plt.figure(figsize=(8,8)) # get: max lat,max lon, min lat, min lon # ID lon/lat of corners, and adjust by how many degrees
