How to get value from string II = strcat('A', num2str(la));
조회 수: 8 (최근 30일)
이전 댓글 표시
I want to plot few matrices A1 A2 A3 A4 A5 and call them in loop to make a movie. I am trying to make a string II = strcat('A', num2str(la)); but I can not get the values of the previously defined A1 matrix ?
The code below returns an error that II must be a matrix but is string A1 with no values.
A1 = rand(10,10); A2 = rand(10,10); A3 = rand(10,10); A4 = rand(10,10); A5 = rand(10,10);
for la = 1 : 5
II = strcat('A', num2str(la));
pcolor(II)
shading interp
end
댓글 수: 1
Stephen23
2016년 3월 12일
편집: Stephen23
2019년 6월 19일
And note that you should not create numbered variables and then try to loop over them. Put all of your data into one variable (an ND array perhaps) and then loop over the dimensions of that array.
The idea of looping over separate numbered variables often occurs to beginners, but this is a slow, buggy, and obfuscated way to code:
답변 (2개)
Image Analyst
2016년 3월 11일
pcolor takes numbers, not character arrays, so why are you trying to create a character array?
And did you know that pcolor does not show you the last row or column? Use imshow instead
wideImage = [A1,A2,A3,A4,A5];
imshow(wideImage, []);
No for loop needed at all.
댓글 수: 2
Image Analyst
2016년 3월 11일
If you want a video of this, you'll have to make up an image first. Then use text() to display text over the image. Then use VideoWriter to write the image frames to a video file, like in the attached example.
참고 항목
제품
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!