Fail to plot graphs in a for loop, hold on doesn't work

Question

allan 2017-1-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319067-fail-to-plot-graphs-in-a-for-loop-hold-on-doesn-t-work

评论： allan 2017-1-6

Hi all,

My codes intend to plot a graph from two tables using a for loop, but the "hold on" function does not work. No matter where I put the "hold on" (i.e. inside or outside the loop), only the last plot is shown in the figure. I am using Matlab2016a

    hold on
for filei=0: ((length(vel_faster.Properties.VariableNames))-4)/3
column_y=3*filei+2;      % y coordinates
column_yL=3*filei+3;     % y coordinates
column_yU=3*filei+4;     % y coordinates
column_b=3*filei+2;      % y coordinates
column_bL=3*filei+3;     % y coordinates
column_bU=3*filei+4;     % y coordinates
figurei=filei+1;           %file loop
% Plot lines from first table
hold on;
x=vel_slower.(1);
y=vel_slower.(column_y); %line1
yL=vel_slower.(column_yL);%line2
yU=vel_slower.(column_yU);%line3
figure(figurei); plot(x,y,'k-');
figure(figurei); plot(x,yU,'m--');
figure(figurei); plot(x,yL,'m--');
% Plot lines from second table
a=vel_faster.(1);
b=vel_faster.(column_b); %line4
bL=vel_faster.(column_bL); %line5
bU=vel_faster.(column_bU); %line6
figure(figurei); plot(a,b,'r-');
figure(figurei); plot(a,bL,'g:');
figure(figurei); plot(a,bU,'g:');
hold all;
end