Using `pyND.plotting.skyplot`



In [37]:

    
from astropy.table import Table

Read sample data table



In [38]:

    
a = Table.read('sky_coordinate_list.csv')
a[0:2]









    Out[38]:




Table length=2

longitude latitude RA[deg] RA[hrs] Dec[deg] Number
float64 float64 float64 float64 float64 int64
97.96751289758868 -60.17843237016753 0.1027875 0.006852500000000002 0.0446675 2
97.99007100373754 -60.17815119309939 0.1130792 0.007538613333333335 0.0491406 2

Import `skyplot`



In [39]:

    
from pyND.plotting import skyplot

skyplot(longitude, latitude, origin=0, zscale=None,zminmax=None, zlabel='Use zlabel=...',zcmap='viridis', pointcolor='seagreen', system='Galactic',projection='aitoff', title=None)

    - longitude
    - latitude
    - origin = 0: The center of the plot in the longitude coordinate. For system='RADec', assumed in hours.

    - pointcolor = 'seagreen': Color to use if not using zscale.

    - zscale = None:  variable for scaling point colors
    - zminmax = None: Optional min/max list for color scaling
    - zlabel= ...:    Set the title for the colorbar
    - zcmap='viridis': Set the color map to use with the scaling.

    - system = 'Galactic': Optionally use 'RADec' for longitude = RA in decimal degrees, latitude = Declination in deg

    - projection = 'aitoff': Projection type: 'mollweide', 'aitoff', 'hammer', 'lambert'

    - title = None: Plot title.

Plot objects on a Galactic coordinate system

Without color scaling



In [63]:

    
skyplot(a['longitude'],a['latitude'],origin=120., pointcolor='firebrick',
                title='Galactic Coordinate Plot')

With color scaling

The color of the points can be scaled to the zscale variable.
Control the range of values mapped using, e.g., zminmax=[0,50].
Set the label on the color bar using zlabel.



In [64]:

    
skyplot(a['longitude'],a['latitude'],origin=120.,
        title='Galactic Coordinate Plot',
        zscale=a['Number'],zminmax=[0,50],zlabel='Number of Objects')

Plot objects using equatorial coordinates

The coordinates are both assumed to be in decimal degrees.
The origin is assumed to be in hours.



In [65]:

    
skyplot(a['RA[deg]'],a['Dec[deg]'],origin=11,system='RADec')



In [ ]:

longitude	latitude	RA[deg]	RA[hrs]	Dec[deg]	Number
float64	float64	float64	float64	float64	int64
97.96751289758868	-60.17843237016753	0.1027875	0.006852500000000002	0.0446675	2
97.99007100373754	-60.17815119309939	0.1130792	0.007538613333333335	0.0491406	2

Using pyND.plotting.skyplot

Read sample data table

Import skyplot

Plot objects on a Galactic coordinate system

Without color scaling

With color scaling

Plot objects using equatorial coordinates

Using `pyND.plotting.skyplot`

Import `skyplot`