polaris.remap.MappingFileStep

class polaris.remap.MappingFileStep(component, name, subdir=None, indir=None, ntasks=None, min_tasks=None, map_filename=None, method='bilinear')

A step for creating a mapping file between grids

Variables

• src_grid_info (dict) – Information about the source grid

• dst_grid_info (dict) – Information about the destination grid

• method ({'bilinear', 'neareststod', 'conserve'}) – The method of interpolation used

• map_filename (str or None) – The name of the output mapping file

• expand_distance (float or None) – The distance in meters over which to expand destination grid cells for smoothing

• expand_factor (float or None) – The factor by which to expand destination grid cells for smoothing

• src_mesh_filename (str) – The name of the SCRIP file for the source mesh

• dst_mesh_filename (str) – The name of the SCRIP file for the destination mesh

__init__(component, name, subdir=None, indir=None, ntasks=None, min_tasks=None, map_filename=None, method='bilinear')

Create a new step

Parameters

• component (polaris.Component) – The component the step belongs to

• name (str) – the name of the step

• subdir (str, optional) –

  the subdirectory for the step. If neither this nor indir

  are provided, the directory is the name

• indir (str, optional) – the directory the step is in, to which name will be appended

• ntasks (int, optional) – the target number of MPI tasks the step would ideally use

• min_tasks (int, optional) – the number of MPI tasks the step requires

• map_filename (str, optional) – The name of the output mapping file, map_{source_type}_{dest_type}_{method}.nc by default

• method ({'bilinear', 'neareststod', 'conserve'}, optional) – The method of interpolation used

Methods

__init__(component, name[, subdir, indir, ...])	Create a new step
add_dependency(step[, name])	Add step as a dependency of this step (i.e.
add_input_file([filename, target, database, ...])	Add an input file to the step (but not necessarily to the MPAS model).
add_output_file(filename[, validate_vars])	Add the output file that must be produced by this step and may be made available as an input to steps, perhaps in other tasks.
constrain_resources(available_resources)	Constrain cpus_per_task and ntasks based on the number of cores available to this step
dst_from_lon_lat(filename[, mesh_name, ...])	Set the destination grid from a file with a longitude-latitude grid.
dst_from_mpas(filename, mesh_name[, mesh_type])	Set the destination grid from an MPAS mesh file
dst_from_points(filename, mesh_name[, ...])	Set the destination grid from a file with a collection of points.
dst_from_proj(filename, mesh_name[, x_var, ...])	Set the destination grid from a file with a projection grid.
dst_global_lon_lat(dlon, dlat[, lon_min, ...])	Set the destination grid from a file with a longitude-latitude grid.
get_remapper()	Get the remapper for this step.
process_inputs_and_outputs()	Process the inputs to and outputs from a step added with polaris.Step.add_input_file() and polaris.Step.add_output_file().
run()	Run the step.
runtime_setup()	Create a remapper and set the command-line arguments
set_resources([cpus_per_task, ...])	Update the resources for the subtask.
set_shared_config(config[, link])	Replace the step's config parser with the shared config parser
setup()	Set up the task in the work directory, including downloading any dependencies.
src_from_lon_lat(filename[, mesh_name, ...])	Set the source grid from a file with a longitude-latitude grid.
src_from_mpas(filename, mesh_name[, mesh_type])	Set the source grid from an MPAS mesh file
src_from_proj(filename, mesh_name[, x_var, ...])	Set the source grid from a file with a projection grid.
validate_baselines()	Compare variables between output files in this step and in the same step from a baseline run if one was provided.