\input fig4tex
\def\GraphLegend{$y = x^\alpha, \alpha = {1\over4}, {1\over3}, {1\over2}, 1, 2, 3, 4.$}
% 1. Definition of characteristic points
\figinit{mm}
\def\Xmin{0}
\def\Ymin{0}
\def\Xmax{80}
\def\Ymax{60}
\def\Xori{0}
\def\Yori{0}
\figpt0:(\Xori,\Yori)
% 2. Creation of the graphical file
\figdrawbegin{}
\def\Xmaxx{\Xmax} % To customize the position
\def\Ymaxx{\Ymax} % of the arrow-heads of the axes.
\figdrawaxes 0(\Xmin, \Xmaxx, \Ymin, \Ymaxx)
% The coordinates of the points are in the files "ptsxpAlpha"
% alpha = .25000
\figset(color=\Redrgb)\figdrawlineF{ptsxp0.25}
% alpha = .33333
\figset(color=\Greenrgb)\figdrawlineF{ptsxp0.33}
% alpha = .50000
\figset(color=\Bluergb)\figdrawlineF{ptsxp0.50}
% alpha = 1.00000
\figset(color=\Blackrgb)\figdrawlineC(
0 0,
80 60
)
% alpha = 2.00000
\figset(color=\Cyanrgb)\figdrawlineF{ptsxp2}
% alpha = 3.00000
\figset(color=\ForestGreenrgb)\figdrawlineF{ptsxp3}
% alpha = 4.00000
\figset(color=\Magentargb)\figdrawlineF{ptsxp4}
\figdrawend
% 3. Writing text on the figure
\figvisu{\figBoxA}{\GraphLegend}{%
\figptsaxes 1:0(\Xmin, \Xmaxx, \Ymin, \Ymaxx)
% Points 1 and 2 are the end points of the arrows
\figwritee 1:(5pt) \figwriten 2:(5pt)
\figptsaxes 1:0(\Xmin, \Xmax, \Ymin, \Ymax)
% Points 1 and 2 are the first two end points of the axes
\figwrites 1:$3.0$(5pt) \figwritew 2:$3.0$(8pt)
% Points 3 and 4 are the two other end points of the axes
\figpttraC 3:=0/\Xmin,0/ \figwrites 3:$0$(5pt)
\figpttraC 4:=0/0,\Ymin/ \figwritew 4:$0$(8pt)
% Legend
\figpt 0:(80, 26.31025)\figwritee 0:$\alpha = {1\over4}$(5pt)
\figpt 0:(80, 28.83460)\figwritene 0:$\alpha = {1\over3}$(5pt)
\figpt 0:(80, 34.63256)\figwritene 0:$\alpha = {1\over2}$(5pt)
\figpt 0:(80, 60) \figwritee 0:$\alpha = 1$(5pt)
\figpt 0:(46.10169, 59.80516)\figwritee 0:$\alpha = 2$(5pt)
\figpt 0:(38.31932, 59.40846) \figwriten 0:$\alpha = 3$(5pt)
\figpt 0:(34.95798, 59.16766) \figwritew 0:$\alpha = 4$(5pt)
% Common point
\figset write(mark=+)
\figptbary 0:[3,1; 2,1]\figwrites 0:$1.0$(5pt)
\figptbary 0:[4,2; 2,1]\figwritew 0:$1.0$(8pt)
}
\centerline{\box\figBoxA}
\bye