;----------------------------------------------------------------- ; NCL User Guide Example: NUG_bar_chart_col_above_below.ncl ; ; KMF 30.10.14 ;----------------------------------------------------------------- ; These load commands are not required in NCL versions 6.2.0 and later. load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl" begin low = -1.0 high = 1.0 n = 24 x = fspan(1.0, 12.0, n) y = random_uniform(low, high, n) wks = gsn_open_wks("png","NUG_bar_chart_col_above_below") res = True res@gsnDraw = True res@gsnFrame = False res@gsnXYBarChart = True res@gsnXYBarChartBarWidth = 0.25 res@trXMinF = 0.0 ;-- x-axis min value res@trXMaxF = 13.0 ;-- x-axis max value res@trYMinF = -1.0 ;-- y-axis min value res@trYMaxF = 1.0 ;-- y-axis max value res@tmXBMode = "Explicit" ;-- explicit labels res@tmXBValues = fspan(1,12,n) res@tmXBLabels = (/"Jan","","Feb","","Mar","","Apr","","May","","Jun","",\ "Jul","","Aug","","Sep","","Oct","","Nov","","Dec",""/) res@tmXBLabelFontHeightF = 0.015 res@tiMainString = "NCL Doc Example: bar chart coloring above/below" res@gsnYRefLine = 0. ; reference line res@gsnXYBarChart = True ; create bar chart res@gsnAboveYRefLineColor = "red" ; above ref line fill red res@gsnBelowYRefLineColor = "blue" ; below ref line fill blue plot = gsn_csm_xy(wks, x, y, res) frame(wks) end