def example():
# file properties
ncfname = "/arctic1/nick/cases/cfsr/output.2006-08-07_12.00.00.nc"
# ncfname = '/home/nickszap/research/mpas/output.2010-10-23_00:00:00.nc' #input file
vtkfname = "plotTest.vtk" # output file
data = output_data.open_netcdf_data(ncfname)
# open the output vtk file and write header. -------------------
fvtk = output_data.write_vtk_header_polydata(vtkfname, ncfname)
# write nodes and cells
nNodes = output_data.write_vtk_xyzNodes(fvtk, data)
nCells = output_data.write_vtk_polygons(fvtk, data)
nLevels = len(data.dimensions["nVertLevels"])
# write some cell data --------------------
fvtk.write("\nCELL_DATA " + str(nCells) + "\n")
output_data.write_vtk_staticGeoFields(fvtk, data, nCells)
# time dependent stuff goes in different files
time = 0
output_data.write_vtk_pressureHeights(fvtk, data, nCells, time, nLevels, 50000) # 500mb = 50,000Pa
# write some node data
# close the .nc and vtk files
data.close()
fvtk.close()
def example(ncNameFile):
#Input file is a list of each output file on its own line.
#Paraview has a hard time animating the 0 time step .nc files. Maybe it's an issue with the MPAS reader?
#We can get around it by creating vtk files of the fields of interest named fnameN.vtk where N is an integer that indicates time.
#store the names of the files we want in order in a file
#ncNameFile = 'ncNames.txt'
fp = open(ncNameFile,'r')
#output the files to
outNameBase = 'june'
#
i = 0
for line in fp:
ncfname = line.rstrip('\n') #do we have to strip off any characters like \n?
if (i==0):
#reference field for orientation
vtkfname = outNameBase+'_ref'+'.vtk'
data = output_data.open_netcdf_data(ncfname)
#header and mesh info
fvtk = output_data.write_vtk_header_polydata(vtkfname, ncfname)
nNodes = output_data.write_vtk_xyzNodes(fvtk, data)
nCells = output_data.write_vtk_polygons(fvtk, data)
fvtk.write('\nCELL_DATA '+str(nCells)+'\n')
output_data.write_vtk_staticGeoFields(f,data,nCells)
fvtk.close()
data.close()
#
vtkfname = outNameBase+str(i)+'.vtk'
data = output_data.open_netcdf_data(ncfname)
#header and mesh info
fvtk = output_data.write_vtk_header_polydata(vtkfname, ncfname)
nNodes = output_data.write_vtk_xyzNodes(fvtk, data)
nCells = output_data.write_vtk_polygons(fvtk, data)
#write cell data
fvtk.write('\nCELL_DATA '+str(nCells)+'\n')
time = 0
vLevel = 18
output_data.write_vtk_cellCenterVelocity(fvtk, data, time, vLevel, nCells)
output_data.write_vtk_var_timeLevelCells(fvtk, 'pv_cell', data, vLevel, time, nCells)
i = i+1
#close files
data.close()
fvtk.close()
fp.close()
def derivedSfcs(ncfname, vtkfname):
#write some derived surfaces to file
data = output_data.open_netcdf_data(ncfname)
#header info
fvtk = output_data.write_vtk_header_polydata(vtkfname, ncfname)
nNodes = output_data.write_vtk_xyzNodes(fvtk, data)
nCells = output_data.write_vtk_polygons(fvtk, data)
nLevels = len(data.dimensions['nVertLevels'])
#cell data
fvtk.write('\nCELL_DATA '+str(nCells)+'\n')
#geo for reference
output_data.write_vtk_staticGeoFields(f,data,nCells)
time = 0
#500 mb
output_data.write_vtk_pressureHeights(fvtk, data, nCells, time, vLevels, 50000.)
#theta on dynamic tropopause
pv = np.empty((nCells,nLevels), dtype=float)
for hcell in range(nCells):
for l in range(nLevels):
pv[hcell,l] = vars.calc_ertelPV(data, 'theta', time, hcell, l, nLevels)
#
pvuVal = 2.
thetaVal = np.empty(nCells)
for hcell in range(nCells):
(l,dl) = output_data.calcIndexOfValue(pvuVal,pv[hcell,:], nLevels)
thetaVal[hcell] = output_data.calcValueOfIndex(l,dl,data.variables['theta'][time,hcell,:])
output_data.write_levelData_float('theta_pv', fvtk, thetaVal, nCells)
#slp
slp = np.empty(nCells)
for hcell in range(nCells):
slp[hcell] = vars.calc_slp(data, hcell, nLevels, time)
output_data.write_levelData_float('slp', fvtk, slp, nCells)
#close da files
fvtk.close()
data.close()
