9.7.4 Log-log sample

C++ code

mglData x(100), y(100);
x.Modify("pow(10,6*x-3)"); y.Modify("sqrt(1+v^2)",x);
gr->Axis(mglPoint(0.001,0.1),mglPoint(1000,1000),mglPoint(0.001,0.1));
gr->SetFunc("lg(x)","lg(y)");
gr->SetTicks('x',0);    gr->SetTicks('y',0);
gr->Box();
gr->Plot(x,y,"b2");
gr->Axis(); gr->Grid("xy","g;");
gr->Label('x',"x",0); gr->Label('y', "y=\\sqrt{1+x^2}",0);

MGL code

new x 100
new y 100
modify x 'pow(10,6*x-3)'
modify y 'sqrt(1+v^2)' x
axis 0.001 0.1 1000 1000
xtick 0
ytick 0
axis 'lg(x)' 'lg(y)' ''
plot x y 'b2'
axis
grid 'xy' 'g;'
xlabel 'x' 0
ylabel 'y=\sqrt{1+x^2}' 0
box

Pure C code

HMDT x = mgl_create_data_size(100,1,1);
HMDT y = mgl_create_data_size(100,1,1);
mgl_data_modify(x,"pow(10,6*x-3)",0);
mgl_data_modify_vw(y,"sqrt(1+v^2)",x,0);
mgl_set_axis(gr,0.001,0.1,0.,1000.,1000.,0.,0.001,0.1,0.);
mgl_set_func(gr,"lg(x)","lg(y)",0);
mgl_set_ticks(gr,0.,0.,-5.);
mgl_box(gr,1);
mgl_plot_xy(gr,x,y,"b2");
mgl_axis(gr,"xy"); mgl_axis_grid(gr,"xy","g;");
mgl_label_ext(gr,'x',"x",0,-1.4,0);
mgl_label_ext(gr,'y', "y=\\sqrt{1+x^2}",0,-1.4,0);
mgl_delete_data(x); mgl_delete_data(y);

Fortran code

integer x,y, mgl_create_data_size
x = mgl_create_data_size(100,1,1)
y = mgl_create_data_size(100,1,1)
call mgl_data_modify(x,'pow(10,6*x-3)',0)
call mgl_data_modify_vw(y,'sqrt(1+v^2)',x,x)
call mgl_set_axis(gr,0.001,0.1,0.,1000.,1000.,0.,0.001,0.1,0.)
call mgl_set_func(gr,'lg(x)','lg(y)','')
call mgl_set_ticks(gr,0.,0.,-5.)
call mgl_box(gr,1)
call mgl_plot_xy(gr,x,y,'b2')
call mgl_axis(gr,'xy')
call mgl_axis_grid(gr,'xy','g;')
call mgl_label_ext(gr,'x','x',0.,-1.4,0)
call mgl_label_ext(gr,'y', 'y=\sqrt{1+x^2}',0.,-1.4,0)
call mgl_delete_data(x)
call mgl_delete_data(y)

Python

x, y = mglData(100), mglData(100);
x.Modify("pow(10,6*x-3)");          y.Modify("sqrt(1+v^2)",x);
gr.SetRanges(0.001,1000,0.1,1000);  gr.SetOrigin(0.001,0.1);
gr.SetFunc("lg(x)","lg(y)");
gr.SetTicks("x",0);     gr.SetTicks("y",0);
gr.Box();               gr.Plot(x,y,"b2");
gr.Axis();              gr.Grid("xy","g;");
gr.Label("x","x",0);    gr.Label("y","y=\\sqrt{1+x^2}",0);