how to export images to pdf

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Lukas
Lukas 2014-4-19
回答： Yash 2024-8-26
heloo
i need to export a lot of images to pdf file. i tried this solutions but it is bad.
for a=1:2
h=subplot(2,1,a), imshow(absKoniec{a})
%in absKoniec are more then 2 images(pages of book), this is only example
kurnik = figure(1)
end
saveas(h,'hokus.pdf')
hgexport(kurnik, 'figure1.pdf', hgexport('factorystyle'), 'Format', 'pdf')
output is here:
images in pdf and in figure are too small(background is too big).so it is necessary to zoom in pdf. And how to do it, if i want to have one image on every single page of pdf (it is possible)? help me pls...
  2 个评论
Walter Roberson
Walter Roberson 2014-4-20
What did you set() the figure PageSize to be?
Lukas
Lukas 2014-4-20
do you thing this:
for a=1:30
h=subplot(30,1,a), imshow(absKoniec{a})
kurnik = figure(1)
end
%saveas(h,'hokus.pdf')
%hgexport(kurnik, 'figure1.pdf', hgexport('factorystyle'), 'Format', 'pdf')
%A = hgload('myFigure.fig');
% set desired output size
set(kurnik, 'Units','centimeters')
height = 15;
width = 4;
% the last two parameters of 'Position' define the figure size
set(kurnik, 'Position',[0 0 width height],...
'PaperSize',[width height],...
'PaperPositionMode','auto',...
'InvertHardcopy', 'off',...
'Renderer','painters'... %recommended if there are no alphamaps
);
%saveas(kurnik,'printout','pdf')
hgexport(kurnik, 'figure1.pdf', hgexport('factorystyle'), 'Format', 'pdf')
but if there(in figure) are many images, i need strong zoom to see images...

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回答（1 个）

Yash
Yash 2024-8-26
Hi Lukas,
As I can understand, you want a pdf with each page as a given image in the folder. Instead of using the "hgexport" function, you can use the "exportgraphics" function to get the pdf. Given below is an example for the same:
% Specify the number of images
numImages = 10;
% Initialize a cell array to store the image file names
imageFiles = cell(numImages, 1);
for i = 1:numImages
imageFiles{i} = sprintf('image_%d.jpg', i); % Adjust the file extension if needed
end
% Create a new PDF
outputPDF = 'output.pdf';
% Create a figure for displaying images
hFig = figure('Visible', 'off');
% Loop over each image and add it to the PDF
for i = 1:numImages
% Read the image
img = imread(imageFiles{i});
% Display the image
imshow(img, 'Border', 'tight');
% Adjust the figure size to fit the image
truesize(hFig);
% Save the current figure as a PDF page
if i == 1
% Use 'append' option to create a new PDF
exportgraphics(hFig, outputPDF, 'Append', false, 'ContentType', 'vector');
else
% Append to the existing PDF
exportgraphics(hFig, outputPDF, 'Append', true, 'ContentType', 'vector');
end
end
% Close the figure
close(hFig);
Kindly refer to the following documentation for the "exportgraphics" function: https://www.mathworks.com/help/matlab/ref/exportgraphics.html
Relevant MATLAB Answer: https://www.mathworks.com/matlabcentral/answers/12987-how-to-save-a-matlab-graphic-in-a-right-size-pdf
I hope this helps!

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