def get_arcmin(self, sep):
sgn, deg, mn, sec = wcs.degToDms(sep)
if deg != 0:
txt = '%02d:%02d:%06.3f' % (deg, mn, sec)
else:
txt = '%02d:%06.3f' % (mn, sec)
return txt
def _get_dss_image(self):
try:
fov_deg = float(self.w.fov.get_text())
# width and height are specified in arcmin
sgn, deg, mn, sec = wcs.degToDms(fov_deg)
wd = deg * 60.0 + float(mn) + sec / 60.0
sgn, deg, mn, sec = wcs.degToDms(fov_deg)
ht = deg * 60.0 + float(mn) + sec / 60.0
# coordinates
ra_txt = wcs.raDegToString(self.ctr_ra_deg)
dec_txt = wcs.decDegToString(self.ctr_dec_deg)
# these are the params to DSS
params = dict(ra=ra_txt, dec=dec_txt, width=wd, height=ht)
# Query the server and download file
srvbank = self.fv.get_ServerBank()
filename = "sky-" + str(self.dsscnt) + ".fits"
self.dsscnt = (self.dsscnt + 1) % 5
filepath = os.path.join(self.tmpdir, filename)
try:
os.remove(filepath)
except Exception as e:
self.logger.warn("failed to remove tmp file '%s': %s" % (filepath, str(e)))
try:
dstpath = srvbank.getImage(self.servername, filepath, **params)
except Exception as e:
errmsg = "Failed to download sky image: %s" % (str(e))
self.fv.gui_do(self.fv.show_error, errmsg)
return
try:
image = self.fv.load_image(dstpath)
except Exception as e:
errmsg = "Failed to load downloaded sky image: %s" % (str(e))
self.fv.gui_do(self.fv.show_error, errmsg)
return
image.set(nothumb=True)
self.fv.gui_do(self.fitsimage.set_image, image)
finally:
self.fv.gui_do(self.fitsimage.onscreen_message_off)
def get_starsep_RaDecDeg(self, ra1_deg, dec1_deg, ra2_deg, dec2_deg):
sep = self.deltaStarsRaDecDeg(ra1_deg, dec1_deg, ra2_deg, dec2_deg)
## self.logger.debug("sep=%.3f ra1=%f dec1=%f ra2=%f dec2=%f" % (
## sep, ra1_deg, dec1_deg, ra2_deg, dec2_deg))
sgn, deg, mn, sec = wcs.degToDms(sep)
if deg != 0:
txt = '%02d:%02d:%06.3f' % (deg, mn, sec)
else:
txt = '%02d:%06.3f' % (mn, sec)
return txt
def deg2fmt(self, ra_deg, dec_deg, format):
rhr, rmn, rsec = wcs.degToHms(ra_deg)
dsgn, ddeg, dmn, dsec = wcs.degToDms(dec_deg)
if format == 'hms':
return rhr, rmn, rsec, dsgn, ddeg, dmn, dsec
elif format == 'str':
#ra_txt = '%02d:%02d:%06.3f' % (rhr, rmn, rsec)
ra_txt = '%d:%02d:%06.3f' % (rhr, rmn, rsec)
if dsgn < 0:
dsgn = '-'
else:
dsgn = '+'
#dec_txt = '%s%02d:%02d:%05.2f' % (dsgn, ddeg, dmn, dsec)
dec_txt = '%s%d:%02d:%05.2f' % (dsgn, ddeg, dmn, dsec)
return ra_txt, dec_txt
def redo(self):
obj = self.canvas.get_object_by_tag(self.areatag)
if not obj.kind in ('rectangle', 'circle'):
return True
try:
image = self.fitsimage.get_image()
if obj.kind == 'rectangle':
# if the object drawn is a rectangle, calculate the radius
# of a circle necessary to cover the area
# calculate center of bbox
x1, y1, x2, y2 = obj.get_llur()
wd = x2 - x1
dw = wd // 2
ht = y2 - y1
dh = ht // 2
ctr_x, ctr_y = x1 + dw, y1 + dh
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
# Calculate RA and DEC for the three points
# origination point
ra_org, dec_org = image.pixtoradec(x1, y1)
# destination point
ra_dst, dec_dst = image.pixtoradec(x2, y2)
# "heel" point making a right triangle
ra_heel, dec_heel = image.pixtoradec(x1, y2)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_heel,
dec_heel)
wd_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel, ra_dst,
dec_dst)
radius_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel, ra_dst,
dec_dst)
else:
# if the object drawn is a circle, calculate the box
# enclosed by the circle
ctr_x, ctr_y = obj.crdmap.to_data(obj.x, obj.y)
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y)
dst_x, dst_y = obj.crdmap.to_data(obj.x + obj.radius, obj.y)
ra_dst, dec_dst = image.pixtoradec(dst_x, dst_y)
radius_deg = wcs.deltaStarsRaDecDeg(ra_ctr, dec_ctr, ra_dst,
dec_dst)
# redo as str format for widget
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
wd = ht = math.fabs(dst_x - ctr_x) * 2.0
dw = wd // 2
dh = ht // 2
ra_org, dec_org = image.pixtoradec(ctr_x, ctr_y - dh)
ra_dst, dec_dst = image.pixtoradec(ctr_x, ctr_y + dh)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_dst,
dec_dst)
ra_org, dec_org = image.pixtoradec(ctr_x - dw, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + dw, ctr_y)
wd_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_dst,
dec_dst)
# width and height are specified in arcmin
sgn, deg, mn, sec = wcs.degToDms(wd_deg)
wd = deg * 60.0 + float(mn) + sec / 60.0
sgn, deg, mn, sec = wcs.degToDms(ht_deg)
ht = deg * 60.0 + float(mn) + sec / 60.0
sgn, deg, mn, sec = wcs.degToDms(radius_deg)
radius = deg * 60.0 + float(mn) + sec / 60.0
#wd, ht, radius = wd_deg, ht_deg, radius_deg
except Exception as e:
errmsg = 'Error calculating bounding box: %s' % str(e)
self.logger.error(errmsg)
self.fv.show_error(errmsg)
return True
# Copy the image parameters out to the widget
d = {
'ra': ra_ctr,
'dec': dec_ctr,
'width': str(wd),
'height': ht,
'r': radius,
'r2': radius,
'r1': 0.0,
}
self._update_widgets(d)
return True
def redo(self):
obj = self.canvas.getObjectByTag(self.areatag)
if not obj.kind in ('rectangle', 'circle'):
return True
try:
image = self.fitsimage.get_image()
if obj.kind == 'rectangle':
# if the object drawn is a rectangle, calculate the radius
# of a circle necessary to cover the area
# calculate center of bbox
x1, y1, x2, y2 = obj.get_llur()
wd = x2 - x1
dw = wd // 2
ht = y2 - y1
dh = ht // 2
ctr_x, ctr_y = x1 + dw, y1 + dh
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
# Calculate RA and DEC for the three points
# origination point
ra_org, dec_org = image.pixtoradec(x1, y1)
# destination point
ra_dst, dec_dst = image.pixtoradec(x2, y2)
# "heel" point making a right triangle
ra_heel, dec_heel = image.pixtoradec(x1, y2)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_heel, dec_heel)
wd_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel,
ra_dst, dec_dst)
radius_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel,
ra_dst, dec_dst)
else:
# if the object drawn is a circle, calculate the box
# enclosed by the circle
ctr_x, ctr_y = obj.crdmap.to_data(obj.x, obj.y)
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y)
dst_x, dst_y = obj.crdmap.to_data(obj.x + obj.radius, obj.y)
ra_dst, dec_dst = image.pixtoradec(dst_x, dst_y)
radius_deg = wcs.deltaStarsRaDecDeg(ra_ctr, dec_ctr,
ra_dst, dec_dst)
# redo as str format for widget
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
wd = ht = math.fabs(dst_x - ctr_x) * 2.0
dw = wd // 2
dh = ht // 2
ra_org, dec_org = image.pixtoradec(ctr_x, ctr_y - dh)
ra_dst, dec_dst = image.pixtoradec(ctr_x, ctr_y + dh)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_dst, dec_dst)
ra_org, dec_org = image.pixtoradec(ctr_x - dw, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + dw, ctr_y)
wd_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_dst, dec_dst)
# width and height are specified in arcmin
sgn, deg, mn, sec = wcs.degToDms(wd_deg)
wd = deg*60.0 + float(mn) + sec/60.0
sgn, deg, mn, sec = wcs.degToDms(ht_deg)
ht = deg*60.0 + float(mn) + sec/60.0
sgn, deg, mn, sec = wcs.degToDms(radius_deg)
radius = deg*60.0 + float(mn) + sec/60.0
#wd, ht, radius = wd_deg, ht_deg, radius_deg
except Exception as e:
errmsg = 'Error calculating bounding box: %s' % str(e)
self.logger.error(errmsg)
self.fv.show_error(errmsg)
return True
# Copy the image parameters out to the widget
d = { 'ra': ra_ctr, 'dec': dec_ctr, 'width': str(wd),
'height': ht, 'r': radius, 'r2': radius,
'r1': 0.0,
}
self._update_widgets(d)
return True
def info_xy(self, data_x, data_y, settings):
# Get the value under the data coordinates
try:
# We report the value across the pixel, even though the coords
# change halfway across the pixel
value = self.get_data_xy(int(data_x + 0.5), int(data_y + 0.5))
except Exception as e:
value = None
system = settings.get('wcs_coords', None)
format = settings.get('wcs_display', 'sexagesimal')
ra_lbl, dec_lbl = six.unichr(945), six.unichr(948)
# Calculate WCS coords, if available
try:
if self.wcs is None:
self.logger.debug("No WCS for this image")
ra_txt = dec_txt = 'NO WCS'
elif self.wcs.coordsys == 'raw':
self.logger.debug("No coordinate system determined")
ra_txt = dec_txt = 'NO WCS'
elif self.wcs.coordsys == 'pixel':
args = [data_x, data_y] + self.revnaxis
x, y = self.wcs.pixtosystem(args, system=system, coords='data')
ra_txt = "%+.3f" % (x)
dec_txt = "%+.3f" % (y)
ra_lbl, dec_lbl = "X", "Y"
else:
args = [data_x, data_y] + self.revnaxis
lon_deg, lat_deg = self.wcs.pixtosystem(args,
system=system,
coords='data')
if format == 'sexagesimal':
if system in ('galactic', 'ecliptic'):
sign, deg, min, sec = wcs.degToDms(lon_deg,
isLatitude=False)
ra_txt = '+%03d:%02d:%06.3f' % (deg, min, sec)
else:
deg, min, sec = wcs.degToHms(lon_deg)
ra_txt = '%02d:%02d:%06.3f' % (deg, min, sec)
sign, deg, min, sec = wcs.degToDms(lat_deg)
if sign < 0:
sign = '-'
else:
sign = '+'
dec_txt = '%s%02d:%02d:%06.3f' % (sign, deg, min, sec)
else:
ra_txt = '%+10.7f' % (lon_deg)
dec_txt = '%+10.7f' % (lat_deg)
if system == 'galactic':
ra_lbl, dec_lbl = "l", "b"
elif system == 'ecliptic':
ra_lbl, dec_lbl = six.unichr(0x03BB), six.unichr(0x03B2)
elif system == 'helioprojective':
ra_txt = "%+5.3f" % (lon_deg * 3600)
dec_txt = "%+5.3f" % (lat_deg * 3600)
ra_lbl, dec_lbl = "x-Solar", "y-Solar"
except Exception as e:
self.logger.warning("Bad coordinate conversion: %s" % (str(e)))
ra_txt = dec_txt = 'BAD WCS'
try:
# log traceback, if possible
(type_, value_, tb) = sys.exc_info()
tb_str = "".join(traceback.format_tb(tb))
self.logger.error("Traceback:\n%s" % (tb_str))
except Exception:
tb_str = "Traceback information unavailable."
self.logger.error(tb_str)
info = Bunch.Bunch(itype='astro',
data_x=data_x,
data_y=data_y,
x=data_x,
y=data_y,
ra_txt=ra_txt,
dec_txt=dec_txt,
ra_lbl=ra_lbl,
dec_lbl=dec_lbl,
value=value)
return info
ts = time.time()
try:
if (self.wcs == None) or (self.wcs.coordsys == 'raw'):
ra_txt = dec_txt = 'NO WCS'
else:
args = [data_x, data_y] + self.revnaxis
lon_deg, lat_deg = self.wcs.pixtosystem(#(data_x, data_y),
args,
system=system,
coords='data')
if format == 'sexagesimal':
if system in ('galactic', 'ecliptic'):
sign, deg, min, sec = wcs.degToDms(lon_deg,
isLatitude=False)
ra_txt = '+%03d:%02d:%06.3f' % (deg, min, sec)
else:
deg, min, sec = wcs.degToHms(lon_deg)
ra_txt = '%02d:%02d:%06.3f' % (deg, min, sec)
sign, deg, min, sec = wcs.degToDms(lat_deg)
if sign < 0:
sign = '-'
else:
sign = '+'
dec_txt = '%s%02d:%02d:%06.3f' % (sign, deg, min, sec)
else:
ra_txt = '%+10.7f' % (lon_deg)
dec_txt = '%+10.7f' % (lat_deg)
def info_xy(self, data_x, data_y, settings):
# Get the value under the data coordinates
try:
# We report the value across the pixel, even though the coords
# change halfway across the pixel
value = self.get_data_xy(int(data_x+0.5), int(data_y+0.5))
except Exception as e:
value = None
system = settings.get('wcs_coords', None)
format = settings.get('wcs_display', 'sexagesimal')
ra_lbl, dec_lbl = six.unichr(945), six.unichr(948)
# Calculate WCS coords, if available
ts = time.time()
try:
if self.wcs is None:
self.logger.debug("No WCS for this image")
ra_txt = dec_txt = 'NO WCS'
elif self.wcs.coordsys == 'raw':
self.logger.debug("No coordinate system determined")
ra_txt = dec_txt = 'NO WCS'
elif self.wcs.coordsys == 'pixel':
args = [data_x, data_y] + self.revnaxis
x, y = self.wcs.pixtosystem(#(data_x, data_y),
args, system=system, coords='data')
ra_txt = "%+.3f" % (x)
dec_txt = "%+.3f" % (y)
ra_lbl, dec_lbl = "X", "Y"
else:
args = [data_x, data_y] + self.revnaxis
lon_deg, lat_deg = self.wcs.pixtosystem(#(data_x, data_y),
args, system=system, coords='data')
if format == 'sexagesimal':
if system in ('galactic', 'ecliptic'):
sign, deg, min, sec = wcs.degToDms(lon_deg,
isLatitude=False)
ra_txt = '+%03d:%02d:%06.3f' % (deg, min, sec)
else:
deg, min, sec = wcs.degToHms(lon_deg)
ra_txt = '%02d:%02d:%06.3f' % (deg, min, sec)
sign, deg, min, sec = wcs.degToDms(lat_deg)
if sign < 0:
sign = '-'
else:
sign = '+'
dec_txt = '%s%02d:%02d:%06.3f' % (sign, deg, min, sec)
else:
ra_txt = '%+10.7f' % (lon_deg)
dec_txt = '%+10.7f' % (lat_deg)
if system == 'galactic':
ra_lbl, dec_lbl = "l", "b"
elif system == 'ecliptic':
ra_lbl, dec_lbl = six.unichr(0x03BB), six.unichr(0x03B2)
elif system == 'helioprojective':
ra_txt = "%+5.3f" % (lon_deg*3600)
dec_txt = "%+5.3f" % (lat_deg*3600)
ra_lbl, dec_lbl = "x-Solar", "y-Solar"
except Exception as e:
self.logger.warning("Bad coordinate conversion: %s" % (
str(e)))
ra_txt = 'BAD WCS'
dec_txt = 'BAD WCS'
try:
# log traceback, if possible
(type_, value_, tb) = sys.exc_info()
tb_str = "".join(traceback.format_tb(tb))
self.logger.error("Traceback:\n%s" % (tb_str))
except Exception:
tb_str = "Traceback information unavailable."
self.logger.error(tb_str)
te = time.time() - ts
#print "time elapsed: %.4f" % te
info = Bunch.Bunch(itype='astro', data_x=data_x, data_y=data_y,
x=data_x, y=data_y,
ra_txt=ra_txt, dec_txt=dec_txt,
ra_lbl=ra_lbl, dec_lbl=dec_lbl,
value=value)
return info
def info_xy(self, data_x, data_y, settings):
# Note: FITS coordinates are 1-based, whereas numpy FITS arrays
# are 0-based
fits_x, fits_y = data_x + 1, data_y + 1
# Get the value under the data coordinates
try:
# We report the value across the pixel, even though the coords
# change halfway across the pixel
value = self.get_data_xy(int(data_x+0.5), int(data_y+0.5))
except Exception as e:
value = None
system = settings.get('wcs_coords', None)
format = settings.get('wcs_display', 'sexagesimal')
ra_lbl, dec_lbl = six.unichr(945), six.unichr(948)
# Calculate WCS coords, if available
ts = time.time()
try:
if (self.wcs == None) or (self.wcs.coordsys == 'raw'):
ra_txt = dec_txt = 'NO WCS'
else:
args = [data_x, data_y] + self.revnaxis
lon_deg, lat_deg = self.wcs.pixtosystem(#(data_x, data_y),
args,
system=system,
coords='data')
if format == 'sexagesimal':
if system in ('galactic', 'ecliptic'):
sign, deg, min, sec = wcs.degToDms(lon_deg,
isLatitude=False)
ra_txt = '+%03d:%02d:%06.3f' % (deg, min, sec)
else:
deg, min, sec = wcs.degToHms(lon_deg)
ra_txt = '%02d:%02d:%06.3f' % (deg, min, sec)
sign, deg, min, sec = wcs.degToDms(lat_deg)
if sign < 0:
sign = '-'
else:
sign = '+'
dec_txt = '%s%02d:%02d:%06.3f' % (sign, deg, min, sec)
else:
ra_txt = '%+10.7f' % (lon_deg)
dec_txt = '%+10.7f' % (lat_deg)
if system == 'galactic':
ra_lbl, dec_lbl = "l", "b"
elif system == 'ecliptic':
ra_lbl, dec_lbl = six.unichr(0x03BB), six.unichr(0x03B2)
elif system == 'helioprojective':
ra_txt = "%+5.3f" % (lon_deg*3600)
dec_txt = "%+5.3f" % (lat_deg*3600)
ra_lbl, dec_lbl = "x-Solar", "y-Solar"
except Exception as e:
self.logger.warn("Bad coordinate conversion: %s" % (
str(e)))
ra_txt = 'BAD WCS'
dec_txt = 'BAD WCS'
te = time.time() - ts
#print "time elapsed: %.4f" % te
info = Bunch.Bunch(itype='astro', data_x=data_x, data_y=data_y,
fits_x=fits_x, fits_y=fits_y,
x=fits_x, y=fits_y,
ra_txt=ra_txt, dec_txt=dec_txt,
ra_lbl=ra_lbl, dec_lbl=dec_lbl,
value=value)
return info
def redo(self):
obj = self.canvas.getObjectByTag(self.areatag)
if not obj.kind in ('rectangle', 'circle'):
# !!?
self.stop()
return True
try:
image = self.fitsimage.get_image()
if obj.kind == 'rectangle':
# if the object drawn is a rectangle, calculate the radius
# of a circle necessary to cover the area
# calculate center of bbox
wd = obj.x2 - obj.x1
dw = wd // 2
ht = obj.y2 - obj.y1
dh = ht // 2
ctr_x, ctr_y = obj.x1 + dw, obj.y1 + dh
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
# Calculate RA and DEC for the three points
# origination point
ra_org, dec_org = image.pixtoradec(obj.x1, obj.y1)
# destination point
ra_dst, dec_dst = image.pixtoradec(obj.x2, obj.y2)
# "heel" point making a right triangle
ra_heel, dec_heel = image.pixtoradec(obj.x1, obj.y2)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_heel,
dec_heel)
wd_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel, ra_dst,
dec_dst)
radius_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel, ra_dst,
dec_dst)
else:
# if the object drawn is a circle, calculate the box
# enclosed by the circle
ctr_x, ctr_y = obj.x, obj.y
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + obj.radius, ctr_y)
radius_deg = wcs.deltaStarsRaDecDeg(ra_ctr, dec_ctr, ra_dst,
dec_dst)
# redo as str format for widget
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
wd = ht = obj.radius * 2.0
dw = wd // 2
dh = ht // 2
ra_org, dec_org = image.pixtoradec(ctr_x, ctr_y - dh)
ra_dst, dec_dst = image.pixtoradec(ctr_x, ctr_y + dh)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_dst,
dec_dst)
ra_org, dec_org = image.pixtoradec(ctr_x - dw, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + dw, ctr_y)
wd_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org, ra_dst,
dec_dst)
# width and height are specified in arcmin
sgn, deg, mn, sec = wcs.degToDms(wd_deg)
wd = deg * 60.0 + float(mn) + sec / 60.0
sgn, deg, mn, sec = wcs.degToDms(ht_deg)
ht = deg * 60.0 + float(mn) + sec / 60.0
sgn, deg, mn, sec = wcs.degToDms(radius_deg)
radius = deg * 60.0 + float(mn) + sec / 60.0
#wd, ht, radius = wd_deg, ht_deg, radius_deg
except Exception as e:
self.fv.showStatus('BAD WCS: %s' % str(e))
return True
# Copy the image parameters out to the widget
d = {
'ra': ra_ctr,
'dec': dec_ctr,
'width': str(wd),
'height': ht,
'r': radius,
'r2': radius,
'r1': 0.0,
}
self._update_widgets(d)
return True
def redo(self):
obj = self.canvas.getObjectByTag(self.areatag)
if not obj.kind in ('rectangle', 'circle'):
# !!?
self.stop()
return True
try:
image = self.fitsimage.get_image()
if obj.kind == 'rectangle':
# if the object drawn is a rectangle, calculate the radius
# of a circle necessary to cover the area
# calculate center of bbox
wd = obj.x2 - obj.x1
dw = wd // 2
ht = obj.y2 - obj.y1
dh = ht // 2
ctr_x, ctr_y = obj.x1 + dw, obj.y1 + dh
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
# Calculate RA and DEC for the three points
# origination point
ra_org, dec_org = image.pixtoradec(obj.x1, obj.y1)
# destination point
ra_dst, dec_dst = image.pixtoradec(obj.x2, obj.y2)
# "heel" point making a right triangle
ra_heel, dec_heel = image.pixtoradec(obj.x1, obj.y2)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_heel, dec_heel)
wd_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel,
ra_dst, dec_dst)
radius_deg = wcs.deltaStarsRaDecDeg(ra_heel, dec_heel,
ra_dst, dec_dst)
else:
# if the object drawn is a circle, calculate the box
# enclosed by the circle
ctr_x, ctr_y = obj.x, obj.y
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + obj.radius, ctr_y)
radius_deg = wcs.deltaStarsRaDecDeg(ra_ctr, dec_ctr,
ra_dst, dec_dst)
# redo as str format for widget
ra_ctr, dec_ctr = image.pixtoradec(ctr_x, ctr_y, format='str')
wd = ht = obj.radius * 2.0
dw = wd // 2
dh = ht // 2
ra_org, dec_org = image.pixtoradec(ctr_x, ctr_y - dh)
ra_dst, dec_dst = image.pixtoradec(ctr_x, ctr_y + dh)
ht_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_dst, dec_dst)
ra_org, dec_org = image.pixtoradec(ctr_x - dw, ctr_y)
ra_dst, dec_dst = image.pixtoradec(ctr_x + dw, ctr_y)
wd_deg = wcs.deltaStarsRaDecDeg(ra_org, dec_org,
ra_dst, dec_dst)
# width and height are specified in arcmin
sgn, deg, mn, sec = wcs.degToDms(wd_deg)
wd = deg*60.0 + float(mn) + sec/60.0
sgn, deg, mn, sec = wcs.degToDms(ht_deg)
ht = deg*60.0 + float(mn) + sec/60.0
sgn, deg, mn, sec = wcs.degToDms(radius_deg)
radius = deg*60.0 + float(mn) + sec/60.0
#wd, ht, radius = wd_deg, ht_deg, radius_deg
except Exception, e:
self.fv.showStatus('BAD WCS: %s' % str(e))
return True
def info_xy(self, data_x, data_y, settings):
# Note: FITS coordinates are 1-based, whereas numpy FITS arrays
# are 0-based
fits_x, fits_y = data_x + 1, data_y + 1
# Get the value under the data coordinates
try:
# We report the value across the pixel, even though the coords
# change halfway across the pixel
value = self.get_data_xy(int(data_x+0.5), int(data_y+0.5))
except Exception as e:
value = None
system = settings.get('wcs_coords', None)
format = settings.get('wcs_display', 'sexagesimal')
ra_lbl, dec_lbl = six.unichr(945), six.unichr(948)
# Calculate WCS coords, if available
ts = time.time()
try:
if self.wcs == None:
self.logger.debug("No WCS for this image")
ra_txt = dec_txt = 'NO WCS'
elif self.wcs.coordsys == 'raw':
self.logger.debug("No coordinate system determined")
ra_txt = dec_txt = 'NO WCS'
else:
args = [data_x, data_y] + self.revnaxis
lon_deg, lat_deg = self.wcs.pixtosystem(#(data_x, data_y),
args, system=system, coords='data')
if format == 'sexagesimal':
if system in ('galactic', 'ecliptic'):
sign, deg, min, sec = wcs.degToDms(lon_deg,
isLatitude=False)
ra_txt = '+%03d:%02d:%06.3f' % (deg, min, sec)
else:
deg, min, sec = wcs.degToHms(lon_deg)
ra_txt = '%02d:%02d:%06.3f' % (deg, min, sec)
sign, deg, min, sec = wcs.degToDms(lat_deg)
if sign < 0:
sign = '-'
else:
sign = '+'
dec_txt = '%s%02d:%02d:%06.3f' % (sign, deg, min, sec)
else:
ra_txt = '%+10.7f' % (lon_deg)
dec_txt = '%+10.7f' % (lat_deg)
if system == 'galactic':
ra_lbl, dec_lbl = "l", "b"
elif system == 'ecliptic':
ra_lbl, dec_lbl = six.unichr(0x03BB), six.unichr(0x03B2)
elif system == 'helioprojective':
ra_txt = "%+5.3f" % (lon_deg*3600)
dec_txt = "%+5.3f" % (lat_deg*3600)
ra_lbl, dec_lbl = "x-Solar", "y-Solar"
except Exception as e:
self.logger.warn("Bad coordinate conversion: %s" % (
str(e)))
ra_txt = 'BAD WCS'
dec_txt = 'BAD WCS'
te = time.time() - ts
#print "time elapsed: %.4f" % te
info = Bunch.Bunch(itype='astro', data_x=data_x, data_y=data_y,
fits_x=fits_x, fits_y=fits_y,
x=fits_x, y=fits_y,
ra_txt=ra_txt, dec_txt=dec_txt,
ra_lbl=ra_lbl, dec_lbl=dec_lbl,
value=value)
return info