how to match the first letter of the title of an image with the input query?

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Zahra 2014-3-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/121750-how-to-match-the-first-letter-of-the-title-of-an-image-with-the-input-query

评论： Zahra 2014-3-19

采纳的回答： Image Analyst

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I need to match a letter with the first letter of the name of the image from the database and display the image.

I have done the following code

load 'mydatabase.mat'

Symbol = input('Enter the symbol you want to test for (A,B,C,Five,Point,V)-','s');

for (i=1:length(files))

if(strcmpi(files(i).name(first),'Symbol')==1)

imshow(file);

disp('letter retrieved');

else

 disp('Incorrect input');
 end

end

The code is giving error on the fourth line since 'first' is not a correct keyword. Please enlighten me Thank you

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Image Analyst 2014-3-16

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/121750-how-to-match-the-first-letter-of-the-title-of-an-image-with-the-input-query#answer_128653

Use 1 instead of first because indexes have to be numbers, or a variable that has a number in it. You never defined first at all so it doesn't know what it is.

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Image Analyst 2014-3-16

I can't run your code. You did not attach the mat file and did not show how you generated the "files" variable.

Zahra 2014-3-19

This is the code used to create the mat file. And i have the corresponding mat file attached as well. I now want to retrieve the image based on the title of the image. Cant figure out where the issue is!

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