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Put datetime scale in x-axis

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rpid
rpid 2019-1-29
评论： Star Strider 2020-12-23
Hey there. I need to to put datetime scale in x-axis. I attached the values in a xls file.
m3=[x1,x2,x3,x4];
startDate = datenum('10-2006');
endDate = datenum('11-2099');
xdate = linspace(startDate,endDate,373); %number of months
figure
bar(xdate,m3);
dateaxis('x','mm-yyyy','keeplimlits');
legend({'X1','X2','X3','X4'},'Location','Southeast');
Till now, I only got to put the datenum and only x1 appears. When I execute the code below, it runs (exception to datetime scale).
m3=[x1,x2,x3,x4];
figure
bar(m3);
legend({'X1','X2','X3','X4'},'Location','Southeast');
Is it possible to solve it? Thanks :-)

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Star Strider
Star Strider 2019-1-29
The amount of data obscures all detail, however this works:
[D,S] = xlsread('matlab.xlsx');
Q1 = D(1:5,:);
m3 = D(:,2:5);
startDate = datenum('10-2006','mm-yyyy');
endDate = datenum('11-2099','mm-yyyy');
xdate = linspace(startDate,endDate,373); %number of months
figure
bar(xdate,m3);
datetick('x','mm-yyyy','keeplimits');
legend({'X1','X2','X3','X4'},'Location','Southeast');
Experiment to get the result you want.
  4 个评论
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Farshid R
Farshid R 2020-12-22
Hi
Good time
I wrote this code but it gives an error
Please help me
thank you
n=100;
u1=[0,0]';
X1=[-4,-2,0]';
% p=data.PredictionHorizon;
a=0.9;h=0.9;
cp1=1;cp2=1;cp3=1;
% c1=0;c2=0;c3=0;
for j=1:n
c1(j)=(1-(1+a)/j)*cp1;
c2(j)=(1-(1+a)/j)*cp2;
c3(j)=(1-(1+a)/j)*cp3;
cp1=c1(j); cp2=c2(j); cp3=c3(j);
end
% initial conditions setting:
v1(1)=u1(1);
w1(1)=u1(2);
x1(1)=X1(1); y1(1)=X1(2); z1(1)=X1(3);
% calculation of phase portraits /numerical solution/:
for i=2:n
x1(i)=h*cos(z1(i-1))*v1(i-1) - memo(x1, c1, i);
y1(i)=h*sin(z1(i-1))*v1(i-1)-memo(y1, c2, i);
z1(i)=h*w1(i-1)-memo(z1, c3, i) ;
end
%%
function [yo] = memo(r, c, k)
%
temp = 0;
for j=1:k-1
temp = temp + c(j)*r(k-j);
end
yo = temp;
%
%%%%% error
Index exceeds the number of array elements (1).
Error in exocstrstateFcnCT1 (line 28)
x1(i)=h*cos(z1(i-1))*v1(i-1) - memo(x1, c1, i);
Star Strider
Star Strider 2020-12-23
Farshid R —
Post this as a new Question. I will delete your Comment in a few hours.

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