Package: paegan
Paegan - The Python CDM for Met/Ocean data===========[![Build Status](https://travis-ci.org/asascience-open/paegan.png?branch=master)](https://travis-ci.org/asascience-open/paegan)Paegan attempts to fill the need for a high level common data model (CDM) library for array based met/ocean data stored in netCDF files or distributed over OPeNDAP.Common Dataset Functions------------------### Grids / UGrids```pythonfrom paegan.cdm.dataset import CommonDataseturl = "http://thredds.axiomalaska.com/thredds/dodsC/PWS_DAS.nc"pd = CommonDataset.open(url)```#### Subsets#####Bbox```pythonpd.restrict_bbox((-74, 40, -70, 42))```#####Time```pythonfrom datetime import datetime,timedeltaending = datetime.utcnow()starting = ending - timedelta(hours=12)pd.restrict_time((starting, ending))```#####Depth```pythonpd.restrict_depth((3,50))```#####Variables```pythonpd.restrict_vars(("u","v"))```#### Nearest subsetting#####Time```pythonfrom datetime import datetimeimport pytznow = datetime.utcnow().replace(tzinfo=pytz.utc)pd.nearest_time(now)```#####Depth```pythonpd.nearest_depth(5)```#### Regridding##### Coming Soon### Discrete Sampling Geometries#### Coming SoonSetup------------------You are using `virtualenv`, right?1. Install [virtualenv-burrito](https://github.com/brainsik/virtualenv-burrito)2. Create virtualenv named "paegan-dev": `mkvirtualenv -p your_python_binary paegan-dev`3. Start using your new virtualenv: `workon paegan-dev`Installation-------------Paegan requires python 2.7.x and is available on PyPI.The best way to install Paegan is through pip:```bashpip install paegan```Paegan requires the following python libraries which will be downloaded and installed through `pip`:* numpy>=1.7.0* scipy* netCDF4>=1.0.2 (requires netcdf and hdf5 C libraries)* Shapely>=1.2.15 (requires geos C library)* pytz* python-dateutil>=1.5If your NetCDF4 and HDF5 libraries are in non-typical locations, you will need to pass the locations to the `pip` command:```bashNETCDF4_DIR=path HDF5_DIR=path pip install paegan```There seems to be a problem installing numpy through `pip` so you may need to install numpy before doing any of the above:```bashpip install numpy==1.7.0```Roadmap--------* Better grid support* Regridding toolsModules--------Other modules making use of Paegan* [paegan-transport](https://github.com/asascience-open/paegan-transport) - Parallelized Lagrangian transport model for NetCDF/OPeNDAP data* [paegan-viz](https://github.com/asascience-open/paegan-viz) - Visualization tools for NetCDF/OPeNDAP dataTroubleshooting---------------If you are having trouble getting any of the paegan functionality to work, try running the tests:```bashgit clone git@github.com:asascience-open/paegan.git`cd paeganpython setup.py test```If you want to run the dataset, timevar, depthvar, or roms tests, you will need to edit the test files with paths appropriate for your system.Some tests requires large files that are not in source control.  You can get them here:* ETOPO1 Global Bathymetry ([ETOPO1_Bed_g_gmt4.grd](http://s3.amazonaws.com/paegan/resources/ETOPO1_Bed_g_gmt4.grd))* HFRadar Gridded Sample ([marcooshfradar20120331.nc](https://s3.amazonaws.com/paegan/resources/marcooshfradar20120331.nc))* NCOM Gridded Surface Sample ([ncom_glb_sfc8_hind_2012033100.nc](http://s3.amazonaws.com/paegan/resources/ncom_glb_sfc8_hind_2012033100.nc))* POM Gridded 3D Sample ([m201310100.out3.nc](http://s3.amazonaws.com/paegan/resources/m201310100.out3.nc))* ROMS C-GRID 3D Sample ([ocean_avg_synoptic_seg22.nc](http://s3.amazonaws.com/paegan/resources/ocean_avg_synoptic_seg22.nc))* Regular Grid Sample ([pws_L2_2012040100.nc](http://s3.amazonaws.com/paegan/resources/pws_L2_2012040100.nc))They are expected to be located in `/data/lm/tests`, if they are not you can symlink to them in that directory.Contributors----------------* Kyle Wilcox <kyle@axiomdatascience.com> - [@kwilcox](http://github.com/kwilcox)* Alex Crosby <crosbyar@gmail.com> - [@acrosby](http://github.com/acrosby)* Brian McKenna <bmckenna@asascience.com>