PBarmby

PBarmby

from astropy.coordinates import ICRS, Galactic, Distance, Angle
from astropy import units as u
import math as mt
import numpy as np
from astropy.table import Table, Column

# inspired by
#http://idl-moustakas.googlecode.com/svn-history/r560/trunk/impro/hiiregions/im_hiiregion_deproject.pro
def correct_rgc(coord, glx_ctr=ICRS('00h42m44.33s +41d16m07.5s'), glx_PA=Angle('37d42m54s'), glx_incl=Angle('77.5d'), glx_dist=Distance(783,unit=u.kpc)):
    '''computes deprojected galactocentric distance for an object at coord,

PBarmby

PBarmby

PBarmby

PBarmby

import numpy as np
from astropy.table import Table, Column

def transpose_table(tab_before, id_col_name='ID'):
    '''Returns a copy of tab_before (an astropy.Table) with rows and columns interchanged
        id_col_name: name for optional ID column corresponding to
        the column names of tab_before'''
    # contents of the first column of the old table provide column names for the new table
    # TBD: check for duplicates in new_colnames & resolve
    new_colnames=tuple(tab_before[tab_before.colnames[0]])

PBarmby

"""
show_student_pix: 

Uses a Western University class list file (typically named .rcl
but really .csv) and the accompanying set of jpg student ID 
pictures to display a few random pictures/names at a time.

Designed for use in IPython notebook.

2014-08-28, P. Barmby

PBarmby

from astropy.table import Table, Column, join, vstack
from uncertainties import ufloat
import astropy.units as u

def uncert_str(tab_row, col_name, value_fmt):
    ''' format tab_row[col_name] single table row in LaTeX $num \pm unc$ format
    input: tab_row: single row from an astropy table
           col_name: name of column to be extracted and formatted
           value_fmt: format for string output
    output:

PBarmby

import numpy as np
import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.ticker import NullFormatter

# based on http://www.astrobetter.com/blog/2014/02/10/visualization-fun-with-python-2d-histogram-with-1d-histograms-on-axes/
def fancy_2d_plot(xvals, yvals):
    '''makes a histogran with sidecars:
    2D histogram shown as an image in center, with
    1D histograms corresponding to the 2 axes along each side

PBarmby

import numpy as np
import astropy.wcs as wcs
import astropy.io.fits as fits
import matplotlib.pyplot as plt
from matplotlib import cm
import scipy.stats as sps
from astropy.table import Table, Column, vstack
from astropy.coordinates import SkyCoord, Distance, Angle
from astropy import units as u
from matplotlib.ticker import NullFormatter