plotAitoffGalacticBackground: Background skymap plot generator

In yazun/dpcgR: Gaia DPCG/CU7 R general data access package

Background skymap plot generator

Description

Usually used to have a background and to overlay with plotAitoffGalacticOverlay or plotAitoffGalacticOverlayBig plots

Usage

plotAitoffGalacticBackground(
  skyMapD,
  valueName,
  titleName,
  legendName,
  hpxLevel = 8
)

Arguments

skyMapD	dataframe with dataframe (aitoffGl,aitoffGb)
valueName	Name of the skymapD dataframe field to be used as a colour
titleName	Title of the plot
legendName	- legend text
hpxLevel	Healpix level (unused,possibly used for the legend)

Value

ggplot with Aitoff background

Examples

## Not run: 
# fetch data via SQL chunk in at Healpix level 8'
```{sql bkg_query, connection=conn, output.var="skyMapData.background", echo = TRUE, cache = TRUE}
select
coord[2]*180 / pi() alpha ,(pi()/2.0 - coord[1]) * 180.0/pi() delta
,cnt_all
from (
  select converHealPixtoPositionLevel((hpx9::bit(64)>>( 2 * (9 - 8)))::bigint::int, 8::int) coord
  ,sum(cnt_g_gold) cnt_all
  from dr3_ops_cs34_mv.skymap_base_g_bp_rp_hpx9_2 group by 1
) g;
```

# Then convert it to a

skyMapFixed.background = skyMapData.background %>%
 mutate(alpha = ifelse(alpha>= 0, alpha, 360 + alpha))
skyMapGalactic.background
 = data.frame(
  skyMapFixed.background,
  togalactic(skyMapFixed.background$alpha, skyMapFixed.background$delta)) %>%
  mutate(aitoffGl = aitoffFn(gl,gb)$x, aitoffGb = aitoffFn(gl,gb)$y)

# then save it to combine with overlay plots.

bkg = plotAitoffGalacticBackground(skyMapGalactic.background,"cnt_all", "", "Counts", hpxLevel = 8)

## End(Not run)

yazun/dpcgR documentation built on Feb. 2, 2024, 7:12 p.m.