#
# 2 data sets
# in Xspec make ipl->wdata
# then split file
#



library(sfsmisc)




up=-10.0

Emin=25.0
Emax=180.0
postscript('galplane.eps', horizontal = FALSE, onefile = FALSE, paper = "special",width = 9.0, height = 6.0)
par(oma=c(1,1,1,1))
par(lwd=2)

#layout(matrix(c(1,2), 2, 1, byrow = TRUE), heights = c(1.5,1), TRUE)

leftx=4.5
par(mar=c(4., leftx, 0.1, 0.1))
par(cex.lab=1.6)
par(cex.axis=1.6)
xlim <- c(Emin,Emax)

cl="black"

sc=1000.0

ylim <- c(-0.005,0.09)*sc

a <- read.table("../galplane_1.dat", col.names=c("x","dx","y","dy"))
b <- read.table("../galplane_3.dat", col.names=c("x","dx","y","dy"))
c <- read.table("../galplane_2.dat", col.names=c("x","dx","y","dy"))
d <- read.table("../galplane_4.dat", col.names=c("x","dx","y","dy"))


plot(a$x, a$y*sc, pch=3, ylim=ylim, xlim=xlim, ylab=expression("mCrab keV"^"-1"~"FOV"^"-1"), xaxt="no",log="x",xlab="",type="p")

### Log axis using sfsmisc ###
atx=c(8,30,50,80,100,150)
eaxis(1, at = atx, labels = pretty10exp(atx, sub10=c(1,100), drop.1=TRUE), las=0)
abline(v=atx, col="lightgray", lty="dotted") 
###

grid()

cl="red"
segments(a$x,(a$y-a$dy)*sc,a$x,(a$y+a$dy)*sc,col=cl)
segments(a$x-a$dx,(a$y)*sc,a$x+a$dx,a$y*sc,col=cl)

cl="black"
segments(d$x,(d$y-d$dy)*sc,d$x,(d$y+d$dy)*sc,col=cl)
segments(d$x-d$dx,(d$y)*sc,d$x+d$dx,d$y*sc,col=cl)

cl="blue"
bias=1.01
segments(c$x*bias,(c$y-c$dy)*sc,c$x*bias,(c$y+c$dy)*sc,col=cl)
segments((c$x-c$dx)*bias,c$y*sc,(c$x+c$dx)*bias,c$y*sc,col=cl)

cl="green"
segments(b$x,(b$y-b$dy)*sc,b$x,(b$y+b$dy)*sc,col=cl)
segments(b$x-b$dx,b$y*sc,b$x+b$dx,b$y*sc,col=cl)

mtext(side = 1, text = "Energy, keV", line = 3, cex=1.6)

legend( 85.0,0.09*sc,c("GB","L+20","L-20","3C 273/Coma"), lty=c(1,1,1,1), lwd=c(2.5,2.5,2.5,2.5),col=c("red","blue","green","black"),cex=1.7)

dev.off()