Error using plot Undefined function or variable 'newplot'.

Question

Masroor 2019-2-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/445645-error-using-plot-undefined-function-or-variable-newplot

回答： Abdallah Ghazi Faisal Zaid Alkilani 2020-3-28

在 MATLAB Online 中打开

Hi,

I am using Matlab via Citrix. I am getting the following error while using plot function.

Error using plot in line 30

Undefined function or variable 'newplot'.

% Jake's Method
% close all; 
clear all;
N=30;
M=0.5*(N/2-1);
wn(M)=0;
beta(M)=0;
ritemp(M,2001)=0;
rqtemp(M,2001)=0;
rialpha(1,2001)=0;
fm=[1 10 100];
Wm=2*pi*fm;
for i=1:3
    for n=1:1:M
               for t=0:0.001:2
                  Wn(n)=Wm(i)*cos(2*pi*n/N);
                  beta(n)=pi*n/M;
                  ritemp(n,round(1000*t+1))=2*cos(beta(n))*cos(Wn(n)*t);
                  rqtemp(n,round(1000*t+1))=2*sin(beta(n))*cos(Wn(n)*t);
                  rialpha(1,round(1000*t+1))=2*cos(Wm(i)*t)/sqrt(2);
                end
    end
    ri=sum(ritemp)+rialpha;
    rq=sum(rqtemp);
    r=sqrt(ri.^2+rq.^2);
    mean=sum(r)/2001;
%     subplot(3,1,i);
%     plot(3,1)
    time=0:0.001:2;
    plot(time,(10*log10(r)-10*log10(mean)));
    titlename=['fd= ' int2str(fm(i)) ' Hz'];
    title(titlename);
    xlabel('time(second)');
    ylabel('Envelope(dB)');
    pause
end

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Guillaume 2019-4-4

Comment by Bruno Brito mistakenly posted as an Answer:

I am getting the same problem

Jianning Dong 2019-4-11

I have the same problem here on Linux platform, matlab2019a. Some other functions in the graphics toolbox folder are missing as well.

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Answer 1

Jianning Dong 2019-4-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/445645-error-using-plot-undefined-function-or-variable-newplot#answer_370249

在 MATLAB Online 中打开

Hi Masroor,

I tried to reset the PATH and rehah the toolbox. Now newplot is usable.

MATLAB moves some functions from the root of graphics folder to axis folder.

So if you update matlab from a previous version. You have to reset the path:

restoredefaultpath
rehash path
rehash toolbox
rehash toolboxcache

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daniel bourdon 2019-6-2

The Answer by Jianning Dong works very well.

I had the same error about variable 'newplot' with Matalb 2019a.

I just typed 'restoredefaultpath' in matlab command window and the plot functions run properly.

David Mellinger 2019-6-17

'restoredefaultpath' worked for me as well. I had done the 'rehash' steps from above previously, which did not work, but possibly the combination of the two is needed.

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