KMFleischer
commented
4 years ago Without the clean code and the data it is hard to tell what is going wrong.
Put a few prints in your code to see how long each part run (you use a few for statements with average) and where it blocks your computer.
I try running ngl contour plot with this code
from future import print_function import numpy #
Import the masked array module.
# from numpy import ma as MA import os
#
Import Ngl support functions.
# import Ngl
#
Import Nio for a NetCDF reader.
# import Nio
#
To use the ScientificPython module to read in the netCDF file,
comment out the above "import" command, and uncomment the
import line below.
#
from Scientific.IO.NetCDF import NetCDFFile
#
Open the netCDF files, get variables.
# data_dir = Ngl.pynglpath("data") ice1 = Nio.open_file(os.path.join(data_dir,"cdf","/Users/mada0007/Documents/correct_data/spi_3.nc"),"r")
#
This is the ScientificPython method for opening a netCDF file.
#
ice1 = NetCDFFile(data_dir + "/cdf/fice.nc","r")
#
Create a masked array to accommodate missing values in the fice variable.
# fice = ice1.variables["SPI3"] # fice[120,49,100] ficea = fice[:,:,:] fill_value = None if (hasattr(fice,"missing_value")): fill_value = fice.missing_value elif (hasattr(fice,"_FillValue")): fill_value = fice._FillValue fice_masked = MA.transpose(MA.masked_values(ficea,fill_value),(1,2,0))
hlat = ice1.variables["lat"] # hlat[49] hlon = ice1.variables["lon"] # hlon[100]
dimf = fice.shape # Define an array to hold long-term monthly means. ntime = fice.shape[0] nhlat = fice.shape[1] nhlon = fice.shape[2]
nmo = 0 month = nmo+1
icemon = MA.zeros((nhlat,nhlon),dtype=float) for i in range(fice_masked.shape[0]): for j in range(fice_masked.shape[1]): icemon[i,j] = MA.average(fice_masked[i,j,0:ntime:12])
#
Fill the places where icemon is zero with the fill value.
# icemon = MA.masked_values(icemon,0.,rtol=0.,atol=1.e-15) icemon = MA.filled(icemon,fill_value)
nsub = 16 # Subscript location of northernmost hlat to be plotted.
cmap = numpy.array([ \ [1.00,1.00,0.50], [0.00,0.00,0.50], [0.50,1.00,1.00], \ [0.50,0.00,0.00], [1.00,0.00,1.00], [0.00,1.00,1.00], \ [1.00,1.00,0.00], [0.00,0.00,1.00], [0.00,1.00,0.00], \ [1.00,0.00,0.00] ],dtype=float)
wks_type = "png" wks = Ngl.open_wks(wks_type,"ngl09p")
resources = Ngl.Resources()
Add a longitude cyclic point
icemonnew,hlonnew = Ngl.add_cyclic(icemon[0:nsub+1,:],hlon[:])
resources.sfMissingValueV = fill_value resources.cnFillPalette = cmap resources.sfXArray = hlonnew # Necessary for overlay on a map. resources.sfYArray = hlat[0:nsub+1] resources.tiMainString = "CSM Y00-99 Mean Ice Fraction Month ={}".format(month)
resources.pmTickMarkDisplayMode = "Never"
map = Ngl.contour_map(wks,icemonnew,resources) # Draw a contour
over a map.
nmos = 12 # Specify the number of months in the loop (max 120). for nmo in range(1,nmos): month = nmo+1 for i in range(fice_masked.shape[0]): for j in range(fice_masked.shape[1]): icemon[i,j] = MA.average(fice_masked[i,j,nmo:ntime:12]) icemon = MA.masked_values(icemon,0.,rtol=0.,atol=1.e-15) icemon = MA.filled(icemon,fill_value)
resources.tiMainString = "CSM Y00-99 Mean Ice Fraction Month ={}".format(month) map = \ Ngl.contour_map(wks,Ngl.add_cyclic(icemon[0:nsub+1,:]),resources)
del icemon # Clean up. del icemonnew del map
Ngl.end()
Almost the time I use this function, my computer hungs and I have to restart. How can I resolve this? Thanks