| 1 | """Thin out MOST NetCDF bathymetry and store as nc file |
|---|
| 2 | |
|---|
| 3 | """ |
|---|
| 4 | |
|---|
| 5 | #input_file = 'e5_bathy_corr5.cdf' |
|---|
| 6 | #output_file = 'SU-AU_e.nc' |
|---|
| 7 | |
|---|
| 8 | #This should have a test |
|---|
| 9 | |
|---|
| 10 | def thinbathy(input_file, output_file): |
|---|
| 11 | |
|---|
| 12 | lat_thin = lon_thin = 4 |
|---|
| 13 | |
|---|
| 14 | from Scientific.IO.NetCDF import NetCDFFile |
|---|
| 15 | |
|---|
| 16 | fid = NetCDFFile(input_file, 'r') |
|---|
| 17 | print fid.variables |
|---|
| 18 | |
|---|
| 19 | # for first event |
|---|
| 20 | latitudes = fid.variables['LAT'][::lat_thin] |
|---|
| 21 | longitudes = fid.variables['LON'][::lon_thin] |
|---|
| 22 | elevations = fid.variables['ELEVATION'][::lat_thin,::lon_thin] |
|---|
| 23 | |
|---|
| 24 | outfile = NetCDFFile(output_file, 'w') |
|---|
| 25 | outfile.createDimension('LON', fid.dimensions['LON']/lon_thin) |
|---|
| 26 | outfile.createDimension('LAT', fid.dimensions['LAT']/lat_thin) |
|---|
| 27 | |
|---|
| 28 | ## # for second event |
|---|
| 29 | ## latitudes = fid.variables['LAT601_690'][::lat_thin] |
|---|
| 30 | ## longitudes = fid.variables['LON645_705'][::lon_thin] |
|---|
| 31 | ## elevations = fid.variables['ELEVATION'][::lat_thin,::lon_thin] |
|---|
| 32 | ## |
|---|
| 33 | ## outfile = NetCDFFile(output_file, 'w') |
|---|
| 34 | ## outfile.createDimension('LON', fid.dimensions['LON645_705']/lon_thin + 1) |
|---|
| 35 | ## outfile.createDimension('LAT', fid.dimensions['LAT601_690']/lat_thin + 1) |
|---|
| 36 | |
|---|
| 37 | import Numeric |
|---|
| 38 | outfile.createVariable('LON', Numeric.Float64, ('LON',)) |
|---|
| 39 | outfile.createVariable('LAT', Numeric.Float64, ('LAT',)) |
|---|
| 40 | outfile.createVariable('ELEVATION', Numeric.Float32, ('LAT', 'LON')) |
|---|
| 41 | |
|---|
| 42 | #Assign to NC file |
|---|
| 43 | #Precision used by MOST for lat/lon is 4 or 5 decimals |
|---|
| 44 | outfile.variables['LAT'][:] = Numeric.around(latitudes, 5) |
|---|
| 45 | outfile.variables['LON'][:] = Numeric.around(longitudes, 5) |
|---|
| 46 | outfile.variables['ELEVATION'][:] = elevations |
|---|
| 47 | |
|---|
| 48 | fid.close() |
|---|
| 49 | outfile.close() |
|---|
