Plot grraph , srink is problem

the following code is plot the graph I want to change the Y axis value so that the box and plot on x -axis does concide , I try it using limit commmand but it just srink the graph

x=-1000:25:975

u_exact=[-9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.25E-08 -9.25E-08 -9.26E-08 -9.27E-08 -9.28E-08 -9.31E-08 -9.36E-08 -9.45E-08 -9.63E-08 -1.00E-07 -1.12E-07 -1.75E-07 -4.18134E+12 -1.77E-07 -1.12E-07 -1.00E-07 -9.63E-08 -9.45E-08 -9.36E-08 -9.31E-08 -9.28E-08 -9.27E-08 -9.26E-08 -9.25E-08 -9.25E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08]

u_RDTM=[-9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.25E-08 -9.25E-08 -9.26E-08 -9.27E-08 -9.28E-08 -9.31E-08 -9.36E-08 -9.45E-08 -9.63E-08 -1.00E-07 -1.12E-07 -1.75E-07 -4.18134E+12 -1.77E-07 -1.12E-07 -1.00E-07 -9.63E-08 -9.45E-08 -9.36E-08 -9.31E-08 -9.28E-08 -9.27E-08 -9.26E-08 -9.25E-08 -9.25E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08 -9.24E-08]

plot(x,u_RDTM,'o',x,u_exact)

xlim([-1844 2054])

ylim([-6950633103752 1818593846248])

Answer 1

[Torsten]

I don't know what you mean by "I want to change the Y axis value so that the box and plot on x -axis does concide".

Maybe like this:

x=-1000:25:975;
u_exact=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];
u_RDTM=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];
semilogy(x,u_RDTM,'o',x,u_exact)

[yogeshwari patel]

yes but i dont want to diaplay as power of 10 as in your code . i want tha space between the graph and boundary

[Torsten]

Maybe you should use the google translator before posting. I don't understand what you mean. What is "the space between the graph and boundary" ?

[Sam Chak]

@yogeshwari patel, Or make a sketch. A picture is worth a thousand words to visually express what you expect to see in the plot.

[yogeshwari patel]

As i run the above code I get the graph as in the attachment . I want to redraw in the form were the stright line, o , boundary of graph doesnt concide as Torsent as asnwer but on Y axis I want the numbers not in powers of 10.

Hope I am clear now .

[DGM]

Something like this?

x=-1000:25:975;
u_exact=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];
u_RDTM=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];

plot(x,u_RDTM,'o',x,u_exact)

padpct = 0.1; % padding amount relative to data span
[mn mx] = bounds(u_exact);
rg = mx-mn;
ylim([mn-rg*padpct mx+rg*padpct])

If you also want padding on x, you can specify xlim() as before, or you can do the same thing to automatically calculate xlim() with proportional padding.

[yogeshwari patel]

Thanks

[DGM]

I didn't know this since I run an older version, but (in some versions newer than R2019b) you can do the following to apply some padding on both x and y.

x=-1000:25:975;
u_exact=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];
u_RDTM=[-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.25E-08	-9.25E-08	-9.26E-08	-9.27E-08	-9.28E-08	-9.31E-08	-9.36E-08	-9.45E-08	-9.63E-08	-1.00E-07	-1.12E-07	-1.75E-07	-4.18134E+12	-1.77E-07	-1.12E-07	-1.00E-07	-9.63E-08	-9.45E-08	-9.36E-08	-9.31E-08	-9.28E-08	-9.27E-08	-9.26E-08	-9.25E-08	-9.25E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08	-9.24E-08];

plot(x,u_RDTM,'o',x,u_exact)

axis padded

I'm not sure where this change was made, but it's been five years, so I assume that this is an option for most people, especially students.