CAN ANY ONE TELL ME WHY AM NOT GETTING ANY ERROR AND RESULT i.e. NO ERROR, NO PLOT. [THE MATLAB CODE IS ATTACHED WITH THIS QUESTION FOR YOUR KIND REFERENCE.]

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Gaurav Sharma 2018-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/421950-can-any-one-tell-me-why-am-not-getting-any-error-and-result-i-e-no-error-no-plot-the-matlab-code

评论： Gaurav Sharma 2018-10-7

采纳的回答： Image Analyst

RK.m

I tried coding RK method but when I try to run that it is neither showing any plot nor any error.

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Stephen23 2018-10-3

编辑：Stephen23 2018-10-3

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@Gaurav Sharma: please show us how you are calling this function, with the exact values that you used. Note that the number of values plotted and returns depends on the input parameters, so what you are seeing depends entirely on those parameters (which you have not told us).

That code worked for me when I tried it:

>> [X,Y] = RK(3,2,1,4,5,6,3,7,8)
X =
    7.0000  -17.4129  -83.1403
Y =
    8.0000   13.8611  -61.8887

Gaurav Sharma 2018-10-3

编辑：Image Analyst 2018-10-3

A=1_B=1_C=1_W=2_X0=1_V0=0_T1=20_H=0.001 (1).gif

I APOLOGISE FOR THAT.

RK(1,1,0.5,1,10,10,0.01,0,1)

THE GRAPH SHOULD LOOK LIKE THE ONE I HAVE ATTACHED WITH THIS MESSAGE. THANK YOU.

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Answer 1

Image Analyst 2018-10-3

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Except for the very first point, all your values are NaN, which don't plot. I didn't delve into the equations to figure out why, but you should do that. If you don't know how to debug, see this link http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/ because it's an essential skill you'll need in the future, so time spent learning it is well worth it.