Add CF4 mean & std (#132)

* Add observer velocity

* Add radec to supergalactic

* Update script

* Add CF4 params

* Add paths to CF4

* Add CF4 but not sth wrong

* Update nb

* Remove errors

* Update nb

* Update scripts

csiborgtools/flow/flow_model.py

@@ -41,7 +41,7 @@ from sklearn.model_selection import KFold
 from tqdm import trange
 
 from ..params import SPEED_OF_LIGHT, simname2Omega_m
-from ..utils import fprint, radec_to_galactic
+from ..utils import fprint, radec_to_galactic, radec_to_supergalactic
 
 H0 = 100  # km / s / Mpc
 
@@ -105,7 +105,11 @@ class DataLoader:
 
         # In case of Carrick 2015 the box is in galactic coordinates..
         if simname == "Carrick2015":
+            # Carrick+2015 box is in galactic coordinates
             d1, d2 = radec_to_galactic(self._cat["RA"], self._cat["DEC"])
+        elif "CF4" in simname:
+            # CF4 box is in supergalactic coordinates
+            d1, d2 = radec_to_supergalactic(self._cat["RA"], self._cat["DEC"])
         else:
             d1, d2 = self._cat["RA"], self._cat["DEC"]
 
@@ -129,10 +133,15 @@ class DataLoader:
             mean_rho_matter *= self._Omega_m
             self._los_density /= mean_rho_matter
 
-        # Since Carrick+2015 provide `rho / <rho> - 1`
-        if simname == "Carrick2015":
+        # Since Carrick+2015 and CF4 provide `rho / <rho> - 1`
+        if simname in ["Carrick2015", "CF4", "CF4gp"]:
             self._los_density += 1
 
+        # But some CF4 delta values are < -1. Check that CF4 really reports
+        # this.
+        if simname in ["CF4", "CF4gp"]:
+            self._los_density = np.clip(self._los_density, 1e-5, None,)
+
         self._mask = np.ones(len(self._cat), dtype=bool)
         self._catname = catalogue
 

csiborgtools/params.py

@@ -77,6 +77,8 @@ def simname2boxsize(simname):
          "quijote": 1000.,
          "TNG300-1": 205.,
          "Carrick2015": 400.,
+         "CF4": 1000.,  # These need to be checked with Helene Courtois.
+         "CF4gp": 1000.,
          }
     boxsize = d.get(simname, None)
 
@@ -97,6 +99,8 @@ def simname2Omega_m(simname):
          "borg2": 0.3111,
          "borg2_all": 0.3111,
          "Carrick2015": 0.3,
+         "CF4": 0.3,
+         "CF4gp": 0.3,
          }
 
     omega_m = d.get(simname, None)

csiborgtools/read/paths.py

@@ -115,6 +115,8 @@ class Paths:
             files = [int(search(r'chain_(\d+)', f).group(1)) for f in files]
         elif simname == "Carrick2015":
             return [0]
+        elif simname in ["CF4", "CF4gp"]:
+            return [0]
         else:
             raise ValueError(f"Unknown simulation name `{simname}`.")
 

csiborgtools/utils.py

@@ -163,6 +163,12 @@ def radec_to_galactic(ra, dec):
     return c.galactic.l.degree, c.galactic.b.degree
 
 
+def radec_to_supergalactic(ra, dec):
+    """Convert right ascension and declination to supergalactic coordinates."""
+    c = SkyCoord(ra=ra*u.degree, dec=dec*u.degree, frame='icrs')
+    return c.supergalactic.sgl.degree, c.supergalactic.sgb.degree
+
+
 @jit(nopython=True, fastmath=True, boundscheck=False)
 def great_circle_distance(x1, x2, in_degrees=True):
     """

scripts/field_los.py

@@ -28,7 +28,8 @@ from astropy import units as u
 from astropy.coordinates import SkyCoord
 from h5py import File
 from mpi4py import MPI
-from taskmaster import work_delegation
+from taskmaster import work_delegation  # noqa
+from astropy.io import fits
 
 from utils import get_nsims
 
@@ -88,14 +89,17 @@ def get_los(catalogue_name, simname, comm):
         if comm.Get_rank() == 0:
             print(f"The dataset contains {len(RA)} objects.")
 
-        # The Carrick+2015 is in galactic coordinates, so we need to convert
-        # the RA/dec to galactic coordinates.
         if simname == "Carrick2015":
+            # The Carrick+2015 is in galactic coordinates, so we need to
+            # convert the RA/dec to galactic coordinates.
             c = SkyCoord(ra=RA*u.degree, dec=dec*u.degree, frame='icrs')
             pos = np.vstack((c.galactic.l, c.galactic.b)).T
+        elif "CF4" in simname:
+            # CF4 fields are in supergalactic coordinates.
+            c = SkyCoord(ra=RA*u.degree, dec=dec*u.degree, frame='icrs')
+            pos = np.vstack((c.supergalactic.sgl, c.supergalactic.sgb)).T
         else:
             pos = np.vstack((RA, dec)).T
-
     else:
         pos = None
 
@@ -155,6 +159,25 @@ def get_field(simname, nsim, kind, MAS, grid):
             return field
         else:
             raise ValueError(f"Unknown field kind: `{kind}`.")
+    elif "CF4" in simname:
+        folder = "/mnt/extraspace/rstiskalek/catalogs"
+        warn(f"Using local paths from `{folder}`.", RuntimeWarning)
+
+        if kind == "density":
+            fpath = join(folder, "CF4_new_64-z008_delta.fits")
+        elif kind == "velocity":
+            fpath = join(folder, "CF4_new_64-z008_velocity.fits")
+        else:
+            raise ValueError(f"Unknown field kind: `{kind}`.")
+
+        fpath = fpath.replace("CF4", "CF4gp") if "CF4gp" in simname else fpath
+        field = fits.open(fpath)[0].data
+
+        # https://projets.ip2i.in2p3.fr//cosmicflows/ says to multiply by 52
+        if kind == "velocity":
+            field *= 52
+
+        return field.astype(np.float32)
     else:
         raise ValueError(f"Unknown simulation name: `{simname}`.")
 

scripts/field_los.sh

@@ -1,6 +1,6 @@
 nthreads=1
 memory=7
-on_login=0
+on_login=1
 queue="berg"
 env="/mnt/users/rstiskalek/csiborgtools/venv_csiborg/bin/python"
 file="field_los.py"

scripts/flow_validation.sh

@@ -17,11 +17,11 @@ if [ "$on_login" != "1" ] && [ "$on_login" != "0" ]; then
 fi
 
 # Submit a job for each combination of simname, catalogue, ksim
-for simname in "csiborg2_main"; do
-    for catalogue in "2MTF"; do
+for simname in "CF4gp"; do
+    for catalogue in "LOSS"; do
         # for ksim in 0 1 2; do
-        for ksim in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 "none"; do
-        # for ksim in 0; do
+        # for ksim in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 "none"; do
+        for ksim in 0; do
             pythoncm="$env $file --catalogue $catalogue --simname $simname --ksim $ksim --ksmooth $ksmooth --ndevice $ndevice --device $device"
 
             if [ $on_login -eq 1 ]; then

scripts/quijote_bulkflow.py

@@ -89,6 +89,7 @@ def main(nsim, folder, fname_basis, Rmax, subtract_observer_velocity,
     bf_vrad_weighted_part = np.full_like(bf_volume_part, np.nan)
     bf_vrad_weighted_halo_uniform = np.full_like(bf_volume_part, np.nan)
     bf_vrad_weighted_halo = np.full_like(bf_volume_part, np.nan)
+    obs_vel = np.full((len(observers), 3), np.nan)
 
     for i in range(len(observers)):
         print(f"{t()}: Calculating bulk flow for observer {i + 1} of simulation {nsim}.")  # noqa
@@ -115,13 +116,17 @@ def main(nsim, folder, fname_basis, Rmax, subtract_observer_velocity,
         halo_mass_current = halo_mass[indxs]
 
         # Subtract the observer velocity
-        if subtract_observer_velocity:
         rscale = 0.5  # Mpc / h
         weights = np.exp(-0.5 * (rdist_part / rscale)**2)
         obs_vel_x = np.average(part_vel_current[:, 0], weights=weights)
         obs_vel_y = np.average(part_vel_current[:, 1], weights=weights)
         obs_vel_z = np.average(part_vel_current[:, 2], weights=weights)
 
+        obs_vel[i, 0] = obs_vel_x
+        obs_vel[i, 1] = obs_vel_y
+        obs_vel[i, 2] = obs_vel_z
+
+        if subtract_observer_velocity:
             part_vel_current[:, 0] -= obs_vel_x
             part_vel_current[:, 1] -= obs_vel_y
             part_vel_current[:, 2] -= obs_vel_z
@@ -168,6 +173,7 @@ def main(nsim, folder, fname_basis, Rmax, subtract_observer_velocity,
         f["bf_volume_halo_uniform"] = bf_volume_halo_uniform
         f["bf_vrad_weighted_halo_uniform"] = bf_vrad_weighted_halo_uniform
         f["bf_vrad_weighted_halo"] = bf_vrad_weighted_halo
+        f["obs_vel"] = obs_vel
 
         for i in range(len(observers)):
             g = f.create_group(f"obs_{str(i)}")