# $ gnuplot  "$d_webRawe"'economics, markets/SP500/semi-log <symName_dateRange>.plt'  
# www.BillHowell.ca  18Jul2022 initial template, based on much earlier working files of mine
# data sources : TradingView.com


#*******************
# lp = "line-point" output of data
# w =  ??  output of data

set terminal pngcairo  enhanced font "arial,10" fontscale 1.0 size 1400, 400  
set datafile separator "{\t}"		# tab as column separator -> "{\t}", as comma -> "{,}", "{whitespace}"
set key off  			#  autotitle columnhead 	# use the first line of datafile as legend titles
# legend placement (leave out for upper right?)
# 		[, outside] cart [top, center, bottom] cart [left, center, right]
  set key right bottom 
# set key right bottom title "opening Price : " 
# set key right bottom title "observed"  
# set key right bottom title "semi-log trend"  


set output "/home/bill/SG6/web/economics, markets/SP500/PuetzUWS intnl stocks/semi-log <symName_dateRange>.png"

set title	"<symName_dateRange> stock market index\n for [data, software, results] see http://www.BillHowell.ca/economics, markets/SP500/" 
set key autotitle columnhead 							# use the first line of datafile as legend titles
# set xlabel	"Year"
set ylabel	"<symName_dateRange> stock market index, \nopening price monthly average (?currency?)" 
#		{left | center | right}
#		{norotate | rotate {by <degrees>}}
#		{font "<name>{,<size>}"}
#		{noenhanced}
#		{front | back}
#		{textcolor <colorspec>}
#		{point <pointstyle> | nopoint}
#		{offset <offset>}
#		{boxed}
#		{hypertext}
show label

set grid
#set xrange [  <yearMin>. :  <yearMax>. ]
#set yrange [  <openMin>. :  <openMax>. ] 

set nologscale	x 
set   logscale	y 
#set xtics 10
#set ytics 1000


#http://gnuplot.sourceforge.net/docs_4.2/node237.html
# set style line <index> default
# set style line <index> {{linetype  | lt} <line_type> | <colorspec>}
#                        {{linecolor | lc} <colorspec>}
#                        {{linewidth | lw} <line_width>}
#                        {{pointtype | pt} <point_type>}
#                        {{pointsize | ps} <point_size>}
#                        {palette}
# unset style line
# show style line

# https://stackoverflow.com/questions/16736861/pointtype-command-for-gnuplot
# I'm guessing that  ' w lp ' gives lines&points, 'w l' lines only?
# with [points, linespoints, lines] ?

# Howell's standard color scheme - can add more with spacialFeatureLines, normal thin line
set style line 100 ps 0	lw 2 lt rgb "black"	
set style line 101 ps 0	lw 2 lt rgb "blue"   
set style line 102 ps 0	lw 2 lt rgb "green"  
set style line 103 ps 0	lw 2 lt rgb "red"    
set style line 104 ps 0	lw 2 lt rgb "purple"	
# example : 1:2 w lp ls 100 :   
#		select data columns 1:2
#		w		 = with
#		lp		 = line between each successive point
#		ls 100 = line style 100

# specialFeatureLines are added here.  examples : 
# set arrow from 1926.25,0.2 to 1926.25,5.0  nohead   linecolor "blue"

set label 1 "<symName_dateRange> semi-log trendline =  10^{<constant> +  (<slope>*yrFrac)}"  \
		at graph 0.01, 0.95 textcolor "black"
set label 2 "relStdErr (normal) = <relStdErr>;  relStdDev (normal) = <relStdDev>"  \
		at graph 0.01, 0.90 textcolor "black"
 
plot	\
   '/home/bill/SG6/web/economics, markets/SP500/PuetzUWS intnl stocks/semi-log <symName_dateRange> regression fit.txt'  using  1:2 w lp ls 100, \
   '/home/bill/SG6/web/economics, markets/SP500/PuetzUWS intnl stocks/semi-log <symName_dateRange> regression fit.txt'  using  1:3 w lp ls 101





# enddoc