* * Script to plot a colorbar * * The script will assume a colorbar is wanted even if there is * not room -- it will plot on the side or the bottom if there is * room in either place, otherwise it will plot along the bottom and * overlay labels there if any. This can be dealt with via * the 'set parea' command. In version 2 the default parea will * be changed, but we want to guarantee upward compatibility in * sub-releases. * * * modifications by mike fiorino 940614 * * - the extreme colors are plotted as triangles * - the colors are boxed in white * - input arguments in during a run execution: * * run cbarn sf vert xmid ymid * * sf - scale the whole bar 1.0 = original 0.5 half the size, etc. * vert - 0 FORCES a horizontal bar = 1 a vertical bar * xmid - the x position on the virtual page the center the bar * ymid - the x position on the virtual page the center the bar * * if vert,xmid,ymid are not specified, they are selected * as in the original algorithm * function colorbar (args) sf=subwrd(args,1) vert=subwrd(args,2) xmid=subwrd(args,3) ymid=subwrd(args,4) if(sf='');sf=1.0;endif * * Check shading information * 'query shades' shdinfo = result if (subwrd(shdinfo,1)='None') say 'Cannot plot color bar: No shading information' return endif * * Get plot size info * 'query gxinfo' rec2 = sublin(result,2) rec3 = sublin(result,3) rec4 = sublin(result,4) xsiz = subwrd(rec2,4) ysiz = subwrd(rec2,6) ylo = subwrd(rec4,4) xhi = subwrd(rec3,6) xd = xsiz - xhi ylolim=0.6*sf xdlim1=1.0*sf xdlim2=1.5*sf barsf=0.8*sf yoffset=0.2*sf stroff=0.05*sf strxsiz=0.12*sf strysiz=0.13*sf * * Decide if horizontal or vertical color bar * and set up constants. * if (yloxdlim1) vchk = 1 if(vert = 0) ; vchk = 0 ; endif else vchk = 0 if(vert = 1) ; vchk = 1 ; endif endif * * vertical bar * if (vchk = 1 ) if(xmid = '') ; xmid = xhi+xd/2 ; endif xwid = 0.2*sf ywid = 0.5*sf xl = xmid-xwid/2 xr = xl + xwid if (ywid*cnum > ysiz*barsf) ywid = ysiz*barsf/cnum endif if(ymid = '') ; ymid = ysiz/2 ; endif yb = ymid - ywid*cnum/2 'set string 0 l 5' vert = 1 else * * horizontal bar * ywid = 0.4 xwid = 0.8 if(ymid = '') ; ymid = ylo/2-ywid/2 ; endif yt = ymid + yoffset yb = ymid if(xmid = '') ; xmid = xsiz/2 ; endif if (xwid*cnum > xsiz*barsf) xwid = xsiz*barsf/cnum endif xl = xmid - xwid*cnum/2 'set string 0 tc 5' vert = 0 endif * * Plot colorbar * 'set strsiz 'strxsiz' 'strysiz num = 0 while (num