Why colororder function does not work with ylim?

Hello everybody,

I have a problem with my Matlab code. I would like to make a 2D plot with two y-axis with different axis limits. The created a proper function for the colors and I used them using the colororder function. However, it does not work with I wrote ylim function.

Do you know why?

I hope you can help me :)

Here my code:

figure

hold on
fontsize(12,"points");
x=[0,6,24,48,72];
xlabel('Time [h]');
yyaxis left
ylabel('Sugars [g/L]');
Glu1=[20.68,23.35,5.41,0.54,0];
errGlu1=[0.77,2.07,0.69,0.12,0];
Fru1=[5.19,5.55,2.07,0.93,0.78];
ylim([0 25])
yyaxis right
ylabel('Products [g/L]');
Et1=[0,0.16,7.51,9.37,8.20];
errEt1=[0,0.02,0.34,0.71,0.42];
Gly1=[0,0.2,0.3,0.36,0.37];
errGly1=[0,0.01,0.03,0.03,0.04];
ylim([0 12]);
plot(x,Glu1,'^-','LineWidth',2);
plot(x,Fru1,'^-','LineWidth',2);
plot(x,Et1,'v-', 'LineWidth',2);
plot(x,Gly1,'v-','LineWidth',2);
errorbar(x,Glu1,errGlu1,'LineStyle','none','Color','black');

errorbar(x,Fru1,errFru1,'LineStyle','none','Color','black');

Unrecognized function or variable 'errFru1'.

errorbar(x,Et1,errEt1,'LineStyle','none','Color','black');
errorbar(x,Gly1,errGly1,'LineStyle','none','Color','black');
newcolors = [0.83 0.14 0.14
    1.00 0.54 0.00
    0.47 0.25 0.80
    0.25 0.80 0.54];
colororder(newcolors)
hold off

[Dyuman Joshi]

There is an undefined variable in your code, see above.

Also, specify which plots you want to draw with the left y-axis and which ones with the right y-axis.

[Ludovica Varriale]

Hi,

thank you very much for you reply. This should be the correct code (sorry for the mistake).

hold on

fontsize(12,"points");

x=[0,6,24,48,72];

xlabel('Time [h]');

yyaxis left

ylabel('Sugars [g/L]');

Glu1=[20.68,23.35,5.41,0.54,0];

errGlu1=[0.77,2.07,0.69,0.12,0];

Fru1=[5.19,5.55,2.07,0.93,0.78];

errFru1= [0.13,0.57,0.41,0.14,0.06];

ylim([0 25])

yyaxis right

ylabel('Products [g/L]');

Et1=[0,0.16,7.51,9.37,8.20];

errEt1=[0,0.02,0.34,0.71,0.42];

Gly1=[0,0.2,0.3,0.36,0.37];

errGly1=[0,0.01,0.03,0.03,0.04];

ylim([0 12]);

plot(x,Glu1,'^-','LineWidth',2);

plot(x,Fru1,'^-','LineWidth',2);

plot(x,Et1,'v-', 'LineWidth',2);

plot(x,Gly1,'v-','LineWidth',2);

errorbar(x,Glu1,errGlu1,'LineStyle','none','Color','black');

errorbar(x,Fru1,errFru1,'LineStyle','none','Color','black');

errorbar(x,Et1,errEt1,'LineStyle','none','Color','black');

errorbar(x,Gly1,errGly1,'LineStyle','none','Color','black');

newcolors = [0.83 0.14 0.14

1.00 0.54 0.00

0.47 0.25 0.80

0.25 0.80 0.54];

colororder(newcolors)

hold off

I would need on the y axis left: Glu1 and Fru1 with the respective errorbars, on the right: Et1 and Gly1 with the respective errorbars.

Thank you !

[Dyuman Joshi]

Do you want to colors the individual plots according to the newcolors array?

If not, please specify the output that you want to obtain.

[Ludovica Varriale]

I would like to have a plot with 4 lines with the different colors specified in the array "newcolors".

As you can see, the problem is that the beginning of the red line is not visible because of the limits I guess.

es.

Answer 1

[Dyuman Joshi]

Note that in using ylim([0 25]) for the left yaxis, the upper cap of an errorbar data point is not visible. Adjust according to requirements.

%Data
x=[0,6,24,48,72];

Glu1=[20.68,23.35,5.41,0.54,0];
errGlu1=[0.77,2.07,0.69,0.12,0];
Fru1=[5.19,5.55,2.07,0.93,0.78];
errFru1= [0.13,0.57,0.41,0.14,0.06];

Et1=[0,0.16,7.51,9.37,8.20];
errEt1=[0,0.02,0.34,0.71,0.42];
Gly1=[0,0.2,0.3,0.36,0.37];
errGly1=[0,0.01,0.03,0.03,0.04];


figure
hold on
xlabel('Time [h]');
fontsize(12,"points");

yyaxis left
ylabel('Sugars [g/L]');
plot(x,Glu1,'^-','LineWidth',2);
plot(x,Fru1,'^-','LineWidth',2);
errorbar(x,Glu1,errGlu1,'LineStyle','none','Color','black');
errorbar(x,Fru1,errFru1,'LineStyle','none','Color','black');
ylim([0 25])
%Colorder for the left side
newcolors1 = [0.83 0.14 0.14
    1.00 0.54 0.00];
colororder(newcolors1)


yyaxis right
ylabel('Products [g/L]');
plot(x,Et1,'v-', 'LineWidth',2);
plot(x,Gly1,'v-','LineWidth',2);
errorbar(x,Et1,errEt1,'LineStyle','none','Color','black');
errorbar(x,Gly1,errGly1,'LineStyle','none','Color','black');
ylim([0 12]);
%Colorder for the right side
newcolors2 = [0.47 0.25 0.80
    0.25 0.80 0.54];
colororder(newcolors2)


hold off

Also, you can also specify the color of a line plot individually without needing to use colororder(), like you have done for the errorbars, as follows -

%Data
x=[0,6,24,48,72];

Glu1=[20.68,23.35,5.41,0.54,0];
errGlu1=[0.77,2.07,0.69,0.12,0];
Fru1=[5.19,5.55,2.07,0.93,0.78];
errFru1= [0.13,0.57,0.41,0.14,0.06];

Et1=[0,0.16,7.51,9.37,8.20];
errEt1=[0,0.02,0.34,0.71,0.42];
Gly1=[0,0.2,0.3,0.36,0.37];
errGly1=[0,0.01,0.03,0.03,0.04];

%Colors to be used for line plots
c = [0.83 0.14 0.14
    1.00 0.54 0.00
    0.47 0.25 0.80
    0.25 0.80 0.54];


figure
hold on
xlabel('Time [h]');
fontsize(12,"points");

yyaxis left
ylabel('Sugars [g/L]');
plot(x,Glu1,'^-','LineWidth',2,'Color',c(1,:));
plot(x,Fru1,'^-','LineWidth',2,'Color',c(2,:));
errorbar(x,Glu1,errGlu1,'LineStyle','none','Color','black');
errorbar(x,Fru1,errFru1,'LineStyle','none','Color','black');
ylim([0 25])


yyaxis right
ylabel('Products [g/L]');
plot(x,Et1,'v-', 'LineWidth',2,'Color',c(3,:));
plot(x,Gly1,'v-','LineWidth',2,'Color',c(4,:));
errorbar(x,Et1,errEt1,'LineStyle','none','Color','black');
errorbar(x,Gly1,errGly1,'LineStyle','none','Color','black');
ylim([0 12]);

hold off

[Ludovica Varriale]

Dear Dyuman Joshi,

thank you a lot for your help! Now the script works as I want!!!

Best regards,

Ludovica Varriale

[Dyuman Joshi]

You are welcome!

If my answer solved your problem, please consider accepting the answer.