Recent content by adeeyo

Goood Day, I have a cubic root equation. I use Newton-raphson for finding the roots. I want to do parameter estimation (tuning of the equation parameters to be able to give better prediction) using experiment data. Can anyone help me on how to do this? Thanks for your anticipated help...

Thanks Kreil, I have succeeded in using datenum. See the code below wt=xlsread('DataTest','sheet1'); datecol = 1; wt(:,datecol) = wt(:,datecol) + datenum('30-Dec-1899'); x=wt(:,1); qo=wt(:,2); plot(x,qo); How do I use datetick to get the x (date axis) in day-month-year ('dd-mmm-yyyy') format...

Hi everybody, I need assistance. I have excel file that conntains a date column and another column. I wish to plot the date on x-axis and the second column on y axis. I wrote the MATLAB code below. This is my code. data=xlsread('DataTest','Sheet1'); q=data(:,2); time=data(:,1); Error...

Hi, I have x and y vectors, x=[ 90868 68151 45434 34076 27261 13631 6816 3408 2273 1948 1705 1137 853 683 569 455 342 274 228 190]; y=[ 3680 3723 3800 3866 3920 4103 4250 4320 4340 4344 4350 4364 4373 4379 4384 4393 4398 4402 4405 4407]; I need to plot semilogx in MATLAB and add trendline and...

Thanks Pythagorean. Subplot will not work as I want all the plots to overlay on the same plot. Please advise on how to create each axes and manually place its position on the figure. Thanks adeeyo

Good Day Everybody, Please assist me on these problems 1. I wish to put six plots on the same plot using matlab. The details of each plot are stated below PLOT 1 x axis range 0:1 y axis range 0:1 PLOT 2 x axis range 0:1 y axis range 0:1 PLOT 3 x axis range 0:1 y axis range...

Good Day Everybody, Please assist me on these problems 1. I wish to put six plots on the same plot using matlab. The details of each plot are stated below PLOT 1 x axis range 0:1 y axis range 0:1 PLOT 2 x axis range 0:1 y axis range 0:1 PLOT 3 x axis range 0:1 y axis range...

Please assist. I am a student.

Hi Simon, I have checked the code over and over again I could not figure out where I got it wrong. Please help me to check and verify the code. Thanks

Hi Simon, I put Z and V inside k loop, but is giving me 80 by 4 by 4 matrix for Z instead of 5 by 4 by 4 matrix. Since my k=40:10:80; and T(k)=273.15+k; Any advice? Thanks

Dear All, Please help me on this little problem. I have the code below. for k=40:10:80 T(k)=273.15+k; z=[0.2 0.2 0.2 0.4]; W_PR=0.245; C=4; omega=[0.344 0.467 0.578 0.789]; Tc=[600 700 500 570]; Pc=[50 70 58 76]; for c=1:C...

Hi, Please assist, I write this MATLAB function and receive the error below function f=myfunn(z,x,K,L1,L2,phi) for c=1:3 f=z(c)-(x(2,c).*K(c).*L1)-(x(1,c).*phi(2,c).*L2)./phi(1,c); end function f=myfunn(z,x,K,L1,L2,phi) | Error: Function definitions are not permitted in...

Gsal Thanks for your reply

Dear All, Please I need your assistance in solving this MATLAB problem. I will be glad to hear from you as early as possible. Thanks for your anticipated help I have three functions First one function f_PR_W=Newtonphasemolefraction1(W_PR, z,C,K_PR ) f_PR=0; for c=1:C...

Hi, Please I need your assistance in solving this MATLAB problem. Thanks for your anticipated help I have three functions First one function f_PR_W=Newtonphasemolefraction1(W_PR, z,C,K_PR ) f_PR=0; for c=1:C f_PR_W=f_PR+z(c).*(1-K_PR(c))./(1+W_PR.*(K_PR(c)-1)); end...