| SkyServer.radialSearch {SciServer} | R Documentation |
Runs a query in the SDSS database that searches for all objects within a certain radius from a point in the sky, and retrieves the result table as a dataframe. Maximum number of rows retrieved is set currently to 500,000.
SkyServer.radialSearch(ra, dec, radius=1, coordType="equatorial", whichPhotometry="optical", limit="0", dataRelease=NULL)
ra |
Right Ascension of the point in the sky. |
dec |
Declination of the point in the sky. |
radius |
Search radius around the (ra,dec) coordinate in the sky. Measured in arcminutes. |
coordType |
Type of celestial coordinate system. Can be set to "equatorial" or "galactic". |
whichPhotometry |
Type of retrieved data. Can be set to "optical" or "infrared". |
limit |
maximum number of rows in the result table (string). If set to "0", then the function will return all rows. |
dataRelease |
SDSS data release. E.g, 'DR13' |
Returns the results table as a dataframe. Throws an exception if the HTTP request to the SkyServer API returns an error.
Manuchehr Taghizadeh-Popp <mtaghiza@jhu.edu>
http://www.sciserver.org
http://skyserver.sdss.org
http://www.github.com/sciserver/SciScript-R
SkyServer.sqlSearch, SkyServer.rectangularSearch.
table = SkyServer.radialSearch(ra=258.25, dec=64.05, radius=3)