Пример #1
0
    def search(self, dstpath, **params):
        """For compatibility with generic image catalog search.

        TODO: dstpath provides the pathname for storing the image
        """

        self.logger.debug("search params=%s" % (str(params)))
        ra, dec = params['ra'], params['dec']
        if not (':' in ra):
            # Assume RA and DEC are in degrees
            ra_deg = float(ra)
            dec_deg = float(dec)
        else:
            # Assume RA and DEC are in standard string notation
            ra_deg = wcs.hmsStrToDeg(ra)
            dec_deg = wcs.dmsStrToDeg(dec)

        # Convert to degrees for search 
        wd_deg = float(params['width']) / 60.0
        ht_deg = float(params['height']) / 60.0
        ## wd_deg = float(params['width'])
        ## ht_deg = float(params['height'])
        
        # initialize our query object with the service's base URL
        query = pyvo.sia.SIAQuery(self.url)
        query.ra = ra_deg
        query.dec = dec_deg
        query.size = (wd_deg, ht_deg)
        query.format = 'image/fits'
        self.logger.info("Will query: %s" % query.getqueryurl(True))

        results = query.execute()
        if len(results) > 0:
            self.logger.info("Found %d images" % len(results))
        else:
            self.logger.warn("Found no images in this area" % len(results))
            return None

        # For now, we pick the first one found

        # REQUIRES FIX IN PYVO:
        # imfile = results[0].cachedataset(dir="/tmp")
        #
        # Workaround:
        fitspath = results[0].make_dataset_filename(dir="/tmp")
        results[0].cachedataset(fitspath)

        # explicit return
        return fitspath
Пример #2
0
    def search(self, **params):
        self.logger.debug("search params=%s" % (str(params)))
        url = self.base_url % params

        data = self.fetch(url, filepath=None)
        data = data.decode("utf8")

        lines = data.split('\n')
        offset = 0
        while offset < len(lines):
            line = lines[offset].strip()
            print line
            offset += 1
            if line.startswith('-'):
                break
        self.logger.debug("offset=%d" % (offset))

        results = []
        table = [lines[offset-2]]
        
        for line in lines[offset:]:
            line = line.strip()
            #print ">>>", line
            if (len(line) == 0) or line.startswith('#'):
                continue
            elts = line.split()
            if (len(elts) < 3):
                continue
            table.append(line)

            try:
                name = elts[self.index['name']]
                ra = elts[self.index['ra']]
                dec = elts[self.index['dec']]
                mag = float(elts[self.index['mag']])
                #print name

                if (self.format == 'deg') or not (':' in ra):
                    # Assume RA and DEC are in degrees
                    ra_deg = float(ra)
                    dec_deg = float(dec)
                else:
                    # Assume RA and DEC are in standard string notation
                    ra_deg = wcs.hmsStrToDeg(ra)
                    dec_deg = wcs.dmsStrToDeg(dec)

                # convert ra/dec via EQUINOX change if catalog EQUINOX is
                # not the same as our default one (2000)
                if cmp(self.equinox, 2000.0) != 0:
                    ra_deg, dec_deg = wcs.eqToEq2000(ra_deg, dec_deg,
                                                     self.equinox)
                
                ra_txt = wcs.raDegToString(ra_deg, format='%02d:%02d:%06.3f')
                dec_txt = wcs.decDegToString(dec_deg,
                                               format='%s%02d:%02d:%05.2f')
                self.logger.debug("STAR %s AT ra=%s dec=%s mag=%f" % (
                    name, ra_txt, dec_txt, mag))

                results.append(Star(name=name, ra_deg=ra_deg, dec_deg=dec_deg,
                                    ra=ra_txt, dec=dec_txt, mag=mag,
                                    flag=0, description=''))

            except Exception, e:
                print str(e)
                self.logger.error("Error parsing catalog query results: %s" % (
                    str(e)))
Пример #3
0
    def search(self, **params):
        self.logger.debug("search params=%s" % (str(params)))
        url = self.base_url % params

        data = self.fetch(url, filepath=None)

        lines = data.split('\n')
        offset = 0
        while offset < len(lines):
            line = lines[offset].strip()
            print line
            offset += 1
            if line.startswith('-'):
                break
        print "offset=%d" % (offset)

        print "iterating data"
        results = []
        table = [lines[offset - 2]]

        for line in lines[offset:]:
            line = line.strip()
            #print ">>>", line
            if (len(line) == 0) or line.startswith('#'):
                continue
            elts = line.split()
            if (len(elts) < 3):
                continue
            table.append(line)

            try:
                name = elts[self.index['name']]
                ra = elts[self.index['ra']]
                dec = elts[self.index['dec']]
                mag = float(elts[self.index['mag']])
                #print name

                if (self.format == 'deg') or not (':' in ra):
                    # Assume RA and DEC are in degrees
                    ra_deg = float(ra)
                    dec_deg = float(dec)
                else:
                    # Assume RA and DEC are in standard string notation
                    ra_deg = wcs.hmsStrToDeg(ra)
                    dec_deg = wcs.dmsStrToDeg(dec)

                # convert ra/dec via EQUINOX change if catalog EQUINOX is
                # not the same as our default one (2000)
                if cmp(self.equinox, 2000.0) != 0:
                    ra_deg, dec_deg = wcs.eqToEq2000(ra_deg, dec_deg,
                                                     self.equinox)

                ra_txt = wcs.raDegToString(ra_deg, format='%02d:%02d:%06.3f')
                dec_txt = wcs.decDegToString(dec_deg,
                                             format='%s%02d:%02d:%05.2f')
                print "STAR %s AT ra=%s dec=%s mag=%f" % (name, ra_txt,
                                                          dec_txt, mag)

                results.append(
                    Star(name=name,
                         ra_deg=ra_deg,
                         dec_deg=dec_deg,
                         ra=ra_txt,
                         dec=dec_txt,
                         mag=mag,
                         flag=0,
                         description=''))

            except Exception, e:
                print str(e)
                self.logger.error("Error parsing catalog query results: %s" %
                                  (str(e)))
Пример #4
0
    def search(self, **params):
        """For compatibility with generic star catalog search.
        """

        self.logger.debug("search params=%s" % (str(params)))
        ra, dec = params['ra'], params['dec']
        if not (':' in ra):
            # Assume RA and DEC are in degrees
            ra_deg = float(ra)
            dec_deg = float(dec)
        else:
            # Assume RA and DEC are in standard string notation
            ra_deg = wcs.hmsStrToDeg(ra)
            dec_deg = wcs.dmsStrToDeg(dec)

        # Convert to degrees for search radius
        radius_deg = float(params['r']) / 60.0
        #radius_deg = float(params['r'])
        
        # initialize our query object with the service's base URL
        query = pyvo.scs.SCSQuery(self.url)
        query.ra = ra_deg
        query.dec = dec_deg
        query.radius = radius_deg
        self.logger.info("Will query: %s" % query.getqueryurl(True))

        results = query.execute()

        # Scan the returned fields for ones that have a UCD containing 'phot'
        mags = []
        fields = results.fielddesc()
        for field in fields:
            ucd = str(field.ucd).lower()
            if ('phot_' in ucd) or ('phot.' in ucd):
                mags.append(field.name)
        self.logger.debug("possible magnitude fields: %s" % str(mags))
        if len(mags) > 0:
            magfield = mags[0]
        else:
            magfield = None
            
        self.logger.info("Found %d sources" % len(results))

        starlist = []
        for source in results:
            starlist.append(self.toStar(source, magfield))

        # metadata about the list
        columns = [('Name', 'name'),
                   ('RA', 'ra'),
                   ('DEC', 'dec'),
                   ('Mag', 'mag'),
                   ('Preference', 'preference'),
                   ('Priority', 'priority'),
                   ('Description', 'description'),
                   ]
        # Append extra columns returned by search to table header 
        # TODO: what if not all sources have same record structure?
        # is this possible with VO?
        cols = list(source.keys())
        cols.remove('RA')
        cols.remove('DEC')
        cols.remove('id')
        columns.extend(zip(cols, cols))

        # which column is the likely one to color source circles
        colorCode = 'Mag'
        
        info = Bunch.Bunch(columns=columns, color=colorCode)
        return starlist, info