Legend color not correspondante to plot for a Plot with loop

Dear all, even using 2016a version i have a problem in legend color which are not correspondante to plot for a plot with loop, this is my code

V_Time = [1, 2, 3];                           % Time Vector fixe length
%
V_Data = 1:1:12;                              % Data Vector
Nbr_Position = 2;                             % Nbr of position
Nbr_Case   = 2;                               % Nbr of cases
%
N_Rows= length(V_Time);                       % Nbr of rows for matrix
N_columns= length(V_Data)/N_Rows;             % Nbr of columns for matrix
M_Brut= (reshape(V_Data,[N_Rows,N_columns])); % Brut matrix from Data Vector
%
%
for i=1:Nbr_Position                                     % loop by position
  M_Nett{i} = M_Brut(:,(i):(Nbr_Position):(end));   % Nett matrix
  figure
  for j=1:Nbr_Case                               % loop by case
      plot(V_Time',M_Nett{i}(:,1:j))             % plot pair
      hold on
  end
  title(['Position N°: ' num2str(i)])    % title
  legend(genvarname(repmat({'Case'},1,Nbr_Case),'Case'))  % legend
end

This is the result plot

Answer 1

[reen2015]

Hi

it must be because the color is changing per iteration as you didnt specify any color in plot. Try specifying color like plot(x,t,'b') for each case separately, so as to make sure the same color appears in legend.

Good luck

Raina

[Ferial Assmani]

Thank you Raina, Ok but how i do it for a servel of plot ?

for j=1:Nbr_Case                               % loop by case
      plot(V_Time',M_Nett{i}(:,1:j))             % plot pair
      hold on
  end

[reen2015]

I did this

clc;clear all;close all;
V_Time = [1, 2, 3];                           % Time Vector fixe length
%
V_Data = 1:1:12;                              % Data Vector
Nbr_Position = 2;                             % Nbr of position
Nbr_Case   = 2;                               % Nbr of cases
%
N_Rows= length(V_Time);                       % Nbr of rows for matrix
N_columns= length(V_Data)/N_Rows;             % Nbr of columns for matrix
M_Brut= (reshape(V_Data,[N_Rows,N_columns])); % Brut matrix from Data Vector
%
%
for i=1:Nbr_Position                                     % loop by position
  M_Nett{i} = M_Brut(:,(i):(Nbr_Position):(end));   % Nett matrix
  figure
  for j=1:Nbr_Case % loop by case
      if i==1
      plot(V_Time',M_Nett{i}(:,1:j),'c')             % plot pair
      hold on
      end
      if i==2
      plot(V_Time',M_Nett{i}(:,1:j),'r')             % plot pair
      hold on
      end
  end
  title(['Position N°: ' num2str(i)])    % title
  legend(genvarname(repmat({'Case'},1,Nbr_Case),'Case'))  % legend
end

But I could not separate cases as i couldnt figure out your cases.

[Ferial Assmani]

But all legend have the same color ? How distinguished each one ?