.PS # LoglogSVG.m4 gen_init(svg_font(sans-serif,11bp__)) define(`rint',`sign(`$1')*int(abs(`$1')+.5)') S:[ horiz = 4 vert = horiz*2/3 tmax = 10 tmin = 1 vmax = 100 vmin = 0.1 tic = 0.08 denv = log(vmax) - log(vmin) denh = log(tmax) - log(tmin) Origin: Here define(`coord', `Origin+((log(`$1')-log(tmin))/denh*horiz,(log(`$2')-log(vmin))/denv*vert)') thinlines_ # Left axes and labels psset_(linecolor=gray) for i = rint(log(vmin)) to rint(log(vmax)) do { move to coord(tmin,exp(i)) line right horiz sprintf("%g",exp(i)) wid 0.2 rjust at last line.start if i < rint(log(vmax)) then { for j = 2 to 9 do { move to coord(tmin,j*exp(i)) line right horiz if (j==2) || (j==5) then { sprintf("%g",j*exp(i)) rjust at last line.start } } } } #Horizontal axis and labels for t = rint(log(tmin)) to rint(log(tmax)) do { move to coord(exp(t),vmin) line up vert sprintf("%g",exp(t)) wid 0.15 below at last line.start if t < rint(log(tmax)) then { for j = 2 to 9 do { move to coord(j*exp(t),vmin) line up vert if (j==2) || (j==5) then { sprintf("%g",j*exp(t)) below at last line.start } } } } psset_(linecolor=black) # arrow from Origin up vert chop 0 chop -0.1 line from Origin up vert "svg_it(y(t))" wid 0.3 at Origin+(-0.1,0.5*vert) rjust # arrow from Origin right horiz chop 0 chop -0.1 line from Origin right horiz "svg_it(t)" at Origin+(.5*horiz,-0.1) below thicklines_ alpha = 2.5 beta = 3.0 tm = max(tmin,(vmin/alpha)^(1/beta)) tM = min(tmax,(vmax/alpha)^(1/beta)) line from coord(tm,alpha*tm^beta) to coord(tM,alpha*tM^beta) P: box invis fill_(1) wid 0.75 ht 0.18 \ "svg_it(y(t) = 1.5 t)" with .w at coord(2.005,14) "svg_it(svg_small(3))" with .w at P.ne #ljust alpha = 0.05 beta = 2.0 tm = max(tmin,(vmin/alpha)^(1/beta)) tM = min(tmax,(vmax/alpha)^(1/beta)) line from coord(tm,alpha*tm^beta) to coord(tM,alpha*tM^beta) Q: box invis fill_(1) wid 0.80 ht 0.18 \ "svg_it(y(t) = 0.05 t)" with .e at coord(4.6,1.4) "svg_it(svg_small(2))" with .w at Q.ne #ljust ] # box wid S.wid ht S.ht at S # print (S.wid,S.ht)/(1 pc__) command "" # end font .PE