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])

回答 (1 件)

Torsten
Torsten 2024 年 8 月 25 日

0 投票

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)

7 件のコメント

yogeshwari patel
yogeshwari patel 2024 年 8 月 25 日
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
Torsten 2024 年 8 月 25 日
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
Sam Chak 2024 年 8 月 25 日
@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
yogeshwari patel 2024 年 8 月 31 日
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
DGM 2024 年 8 月 31 日
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
yogeshwari patel 2024 年 8 月 31 日
Thanks
DGM
DGM 2024 年 9 月 1 日
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.

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