I found this bellow code in internet. While I run the code I noticed following errors.

Question

Veera Venkata Ramarao Bikkina 2019-11-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/492357-i-found-this-bellow-code-in-internet-while-i-run-the-code-i-noticed-following-errors

回答： Jan 2019-11-21

clc
clear all;
close all;
filename = 'Registration_Details.xls';
[num,txt] = xlsread(filename);
len=length(txt);
blankimage = imread('certificate_Blank.tiff');
for i=1:len
    for j= 2:2 
        text_names(i,j)=txt(i,j);
    end
end
% Obtain names from the txt variable which are in 2nd column
for i=1:len
    for j= 3:3
      text_topic(i,j)=txt(i,j);
    end
end
for i=2:len
        text_all=[text_names(i,2) text_topic(i,3)];
        
        position = [100 258;120 416];         
        
        RGB = insertText(blankimage,position,text_all,'FontSize',22,'BoxOpacity',0);
        
        figure
        imshow(RGB)        
        
        y=i-1;
        filename=['Certificate_Topic_' num2str(y)];
        lastf=[filename '.png'];
        saveas(gcf,lastf)
end 

Errors:

Error using matlab.graphics.internal.name (line 101)

Cannot create output file '.\Certificate_Topic_1.png'.
Error in print (line 71)
pj = matlab.graphics.internal.name( pj );
Error in saveas (line 181)
        print( h, name, ['-d' dev{i}] )
Error in MainCode (line 36)
        saveas(gcf,lastf)

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Answer 1

Jan 2019-11-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/492357-i-found-this-bellow-code-in-internet-while-i-run-the-code-i-noticed-following-errors#answer_402585

This is a strange and inefficient code. Replace e.g.

for i=1:len
    for j= 2:2 
        text_names(i,j)=txt(i,j);
    end
end

to

text_names(:, 2) = txt(:, 2);

The actual error message can be caused by a write-protected folder. The solution is to write the output to a folder, in which you have write-permissions.