Legend doesn't match my plot style

I'm trying to match the legend with plot style, but it only shows the legend wrong.The problem is I have 3 different plot styles and different colors but the legend doesn't match with plot.

Here is my code:

figure;
hold all;
plot(max_time1,R1M1V1,'bs');
plot(max_time2,R2M1V1,'-.r');
plot(max_time3,R3M1V1,'--m');
title('Impedance Vs Time');
legend({'R1M1V1','R2M1V1','R3M1V1'});
hold off;

The output is below.

What am I doing wrong?

Thanks in advance

Answer 1

[Image Analyst]

Are they vectors or matrices? Can you attach your data?

Anyway, put hold on after the first call to plot. That's the way I always do it, ,though hold all before might work

plot(max_time1,R1M1V1,'bs');
hold on;
plot(max_time2,R2M1V1,'-.r');
plot(max_time3,R3M1V1,'--m');

[MOHAMED Camara]

The data are vectors. Here is the whole code for R1M1V1. R2M1V1& R3M1V1 are just a repetition.

n = 300; % average every n values
% read excel data
filename='V-CAMARA_M2'; 
sheet=15;
% voltage data
voltage1='B2:B30001'; % Cell location % For range use 'A2:B6'
voltage1_data=29671.2*xlsread(filename,sheet,voltage1);
max_voltage1 = arrayfun(@(i) mean(abs(voltage1_data(i:i+n-1))),1:n:length(voltage1_data)-n+1)'; 
voltage1maxmin = [max(max_voltage1) min(max_voltage1)];
mxI1 = voltage1maxmin(1);
mnI1 = voltage1maxmin(2);
I1p = linspace(mnI1, mxI1, 100);
% max_voltage1=2400*ones(100,1);


% current  data
current1='F2:F30001'; % Cell location % For range use 'A2:B6'
current1_data=6*xlsread(filename,sheet,current1);
max_current1 = arrayfun(@(i) mean(abs(current1_data(i:i+n-1))),1:n:length(current1_data)-n+1)';
current1maxmin = [max(max_current1) min(max_current1)];
mxI01 = current1maxmin(1);
mnI01 = current1maxmin(2);
I01p = linspace(mnI01, mxI01, 100);

% time three data
time1='J2:J30001'; % Cell location % For range use 'A2:B6'
timedata1=xlsread(filename,sheet,time1);
max_time1 = arrayfun(@(i) max(abs(timedata1(i:i+n-1))),1:n:length(timedata1)-n+1)';
timemaxmin = [max(max_time1) min(max_time1)];
mxI001 = timemaxmin(1);
mnI001 = timemaxmin(2);
R1M1V1=max_voltage1/max_current1;
I001p = linspace(mnI001, mxI001, 100);

figure;
plot(max_time1,R1M1V1,'bs');
hold on;
plot(max_time2,R2M1V1,'-.r');
hold on;
plot(max_time3,R3M1V1,'--m');
hold on;

[Image Analyst]

Error using xlsread (line 136)

XLSREAD unable to open file 'V-CAMARA_M2'.

File 'V-CAMARA_M2' not found.

Error in test5 (line 15)

voltage1_data=29671.2*xlsread(filename,sheet,voltage1);

Still can't reproduce. Can you attach the workbook?

Answer 2

[Hank]

It looks like R1M1V1 is plotting three different curves. This could happen if max_time1 is a vector but R1M1V1 is a Nx3 matrix.

Plot will interpret each of the columns as a separate curve. Then, when you say legend('R1','R2','R3'), only the first three curves are labeled.

If all the data in R1M1V1 is the same type, they can be plotted in a single curve

 plot(max_time, R1M1V1(:),'sb'); % use the 'vector(:)' syntax to force all the data into a column vector
 % % do this for all the plots

[MOHAMED Camara]

R1M1VX is column vector 1x300