Last Saved .PNG uploaded on all PPT slides

For some reason my code would only upload my last saved .png file on all my PPT generated slides. I don't have this issue if i make a for loop for each image but that'd be too tedious. My code is supposed to upload each saved plot onto separate PPT slides.

Does the issue lie in the replace() function or the for loop statement? I labeled below

The code:

a = fileLength; % fileLength = 6 in this example

for j = 3:length(a) %The issue may lie here
    
    
    imgFIG = openfig(strcat(fileList(j).folder,'\',fileList(j).name));
    saveas(imgFIG,'plot6.png');
    imgPNG = imread('plot6.png');
    imgPNG2 = imresize(imgPNG, 1.5);
    imwrite(imgPNG2,'plot7.png')
    imgPNG3 = Picture('plot7.png'); 
    fName = fileList(j).name;
    z = fName(27:28);
    
    dataSlides = add(ppt,'Title and Content');
    newTitle = strcat('Step', {' '}, z,' Simulations');
    replace(dataSlides,'Title', newTitle);
    replace(dataSlides,'Content', imgPNG3); %The issue may lie here
    
    clearvars -except j pL ppt directory fileList dirSize a
end

Answer 1

[Image Analyst]

What does this line do:

dataSlides = add(ppt,'Title and Content');

What is ppt? I'd use ActiveX if you're using Windows.

Why are you calling clearvars? I'd get rid of that. It's not necessary.

And if

a = fileLength; % fileLength = 6 in this example

then

1:length(a)

so the loop only happens once because length(6) = 1. The length of a scalar is just one value. Try

for j = 3: a  % For j = 3, 4, 5, and 6

[Zack Morris]

- The line dataSlides = add(ppt,'Title and Content'); creates a Title and Content powerpoint slide. - PPT just means PowerPoint. It’s used when creating a PowerPoint from Matlab - i’m calling clearvars -except so that the values of those variables don’t change. If it’s not needed then I’ll delete it. - I’ve tried for j = 3:a before and still got the same issue of the plot # 6 being uploaded on the rest of the PowerPoint slides. I’m trying to make it so that when j = 3,4,5,6 (these # representing an image) each image will display on its own slide

[Image Analyst]

So did you try my suggestion:

for j = 3: a % For j = 3, 4, 5, and 6

or not? If not, why not? If so, did that allow for the other iterations (it should)?

Do you understand that the length of a scalar is 1?

a=6

a = 6

length(a)

ans = 1

j = 1 : 3 : length(a) % Will not have more than 1 value!!!!

j = 1

[Zack Morris]

I tried for j = 3:a but still got the same occurrence. Powerpoint slides 3 to 6 still display the last saved image. I’m trying to get slide 3 to display image 3, slide 4 to image 4, etc.

[Image Analyst]

I don't think I can help more unless I have the full code, like where you instantiate ppt.

Can you use ActiveX (i.e. are you on Windows and willing to use it)?

[Zack Morris]

Thank you. Using what you said for j and the bottom 2 lines fixed the photo issue on each PPT slide.

for j = 1:a

imgFIG = openfig(strcat(fileList(j).folder,'\',fileList(j).name));

saveas(imgFIG,['plot' num2str(j) '.png']);

imgPNG = Picture(['plot' num2str(j) '.png']);

%imgPNG = imread('plot.png');

%imgPNG2 = imresize(imgPNG, 1.5);

%imwrite(imgPNG2,'plot2.png')

%imgPNG3 = Picture('plot2.png');

fName = fileList(j).name;

z = fName(27:28);

dataSlides = add(ppt,'Title and Content');

newTitle = strcat('Step', {' '}, z,' Simulations');

replace(dataSlides,'Title', newTitle);

replace(dataSlides,'Content', imgPNG);

end

My new issue is resizing the images. I tried using the imresize command with imgPNG but no result. Any assistance?