How do I save for loop plots to a figure directory?

Question

Macy 2023-2-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1906710-how-do-i-save-for-loop-plots-to-a-figure-directory

评论： Macy 2023-2-5

I am completely new to MatLab. I was intructed to create a string variable that contains the name of a directory I made (a folder called OutputFigures which is found in C:\Users\sfai\Documents\MATLAB\OutputFigures).

How do I make this string variable? I tried the following but I am not sure if it is correct:

OutputFigures = 'C:\Users\sfai\Documents\MATLAB\OutputFigures';

When trying to save plots to this folder, I kept getting an error message stating that the file and/or folder path was invalid or missing. It only worked when I used 'OutputFigures/' which you will see below.

Then I made the following 5 plots using a forloop. I was instructed to save the plots (with corresponding figure names, Fig.1, Fig.2 etc) to the directory I made. I am getting stuck on saving my plots to the directory I made, OutputFigures.

Hints I was given to use: Hint#1: Use the "saveas(gcf,...) function to save the file. Hint#2: Concatenate strings to create the correct file and folder path.

I found out one way to save the plots in the correct location with correct names:

saveas(h,sprintf('OutputFigures/FIG%d.png',i));

However, I don't think this "concatenates strings".

When I try the following:

saveas(gcf, [strcat('Figure #', num2str(i), '.png')]);

I get the plots, but I don't know how to save them to the directory I created.

And when I try to save them like so, it only saves one figure titled "name":

name = [strcat('Figure #', num2str(i), '.png')];

% saveas(gcf, 'OutputFigures/name.jpg');

Any help is greatly appreciated. Here is the complete code:

plot_points = [1:5]

color = ["r", "g", "b", "m", "b"];

OutputFigures = 'C:\Users\sfai\Documents\MATLAB\OutputFigures';

for i=1:5

h=figure

plot(plot_points,plot_points,color(i))

xlabel('X')

ylabel('Y')

title(strcat({'Figure # '}, num2str(i)))

%% How can I us saveas(gcf,...) function to save the file and concatenate strings to create the correct file and folder path?

end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Matt J 2023-2-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1906710-how-do-i-save-for-loop-plots-to-a-figure-directory#answer_1164045

编辑：Matt J 2023-2-5

在 MATLAB Online 中打开

One possibility:

saveas(gcf, fullfile(OutputFigures, "FIG"+i) );

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Macy 2023-2-5

Thank you so much! I also found that my initital string variable OutputFigures was going to a new folder instead of the one I wanted it to go to but when changing it to simply OutputFigures = 'OutputFigures/'; it saves it in the right folder.

请先登录，再进行评论。