how can plot this figure?

Hello, please I want to plot a figure like this, please help me , how can do it? any implementation and thanks in advance

[Azzi Abdelmalek]

What about your data?

[Sahar abdalah]

I have a vector that contain number of class

 numberclass=[50,100,250,500,1000]

I want to plot the variation of result between 3 feature : the accuracy of the feature1 is :

 Accuracy1=[94,90,88,79,77]

the accuracy of the feature2 is :

 Accuracy2=[90,80,79,75,71]

the accuracy of the feature3 is :

 Accuracy3=[98,90,85,70,60]

Answer 1

[Star Strider]

Use the hold function to put multiple plots on the same set of axes:

numberclass=[50,100,250,500,1000];
Accuracy1=[94,90,88,79,77];
Accuracy2=[90,80,79,75,71];
Accuracy3=[98,90,85,70,60];

figure(1)
plot(numberclass, Accuracy1)
hold on
plot(numberclass, Accuracy2)
plot(numberclass, Accuracy3)
hold off
grid
xlabel('Number of selected classes')
ylabel('Classification Accuracy')

[Sahar abdalah]

thank you for your answer, but I want to have another result like image in the question with colors and details.Can you help me?

[Star Strider]

My pleasure.

The documentation for the plot and legend functions have all the information you need to make a plot like the one you provided in your Question. Anything I would provide here would simply be restating what is already in the documentation.