How to Improve the image quality

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Abu Sayed
Abu Sayed il 12 Ago 2023
Risposto: Kunal Kandhari il 14 Ago 2023
I am facing a problem, about the image quality in matlab. I am saving the graph in different format but not getting the proper resulation. How can I solve this issue? I have to insert this graph is latex.
  1 Commento
Image Analyst
Image Analyst il 12 Ago 2023
Did you try exportgraphics?
help exportgraphics
EXPORTGRAPHICS Save plot or graphics content to file EXPORTGRAPHICS(OBJ, FILESPEC) saves the specified graphics to a file. OBJ is the handle of any type of an axes, a figure, a chart that can be a child of the figure, a tiled chart layout, or a container within the figure. FILESPEC is a character vector or string scalar specifying the name of a file to create. It must include the extension, and can optionally include a full or relative path. EXPORTGRAPHICS supports creating JPEG, PNG, and TIFF images, and EPS, PDF, and EMF vector formats (EMF is only supported on Windows). EXPORTGRAPHICS(___, OPTIONS) saves the graphics to the file, applying the specified OPTIONS. OPTIONS is one or more of the following name-value pairs. 'ContentType', CONTENTTYPE how to generate content in vector format files CONTENTTYPE can be one of the following values - 'vector' to generate vectorized (scalable) output - 'image' to generate rasterized output (embed image) - 'auto' allow MATLAB heuristic to decide The default value is 'auto' 'Resolution', DPI specifies output resolution for images. DPI must be a positive whole number. The default value is 150 'BackgroundColor', COLORSPEC specifies the color to use as the background COLORSPEC can be one of the following values - a color name, such as 'red', or 'w' - an RGB triplet, such as [1 0 0] or [1 1 1] - a hexadecimal color code, such as '#FFF' or '#FFFFFF') - 'none' to use either a white or transparent background, depending on what the output format supports - 'current' to use the graphic's current background color The default value is 'white' 'Colorspace', COLORSPACE the color space to use when generating output COLORSPACE can be one of the following values - 'rgb' generates RGB true color output - 'gray' generates grayscale output - 'cmyk' generates cyan, magenta, yellow, black output The default value is 'rgb' 'Append', APPEND specifies whether to append the output to an existing file or replace the content. APPEND can have a value of true or false. - true appends the output to an existing file - false replaces the content in an existing file The default value is false Example: Export a plot to a pdf file plot(rand(3)); exportgraphics(gca, 'results.pdf'); Example: Export a plot to a pdf file and ensure output is vectorized/scalable plot(rand(3)); exportgraphics(gca, 'results.pdf', 'ContentType', 'vector'); Example: Export a plot as an image to a pdf file plot(rand(3)); exportgraphics(gca, 'results.pdf', 'ContentType', 'image'); Example: Export a plot and append to an existing pdf file plot(rand(3)); exportgraphics(gca, 'results.pdf', 'Append', true); Example: Export a specific plot from the figure fig = figure; ax1 = subplot(2,1,1); bar(magic(4)); ax2 = subplot(2,1,2); plot(rand(4)); exportgraphics(ax2, 'results.png'); Example: Export all plots from figure to an image file at 300DPI subplot(2,1,1); bar(magic(4)); subplot(2,1,2); plot(rand(4)); exportgraphics(gcf, 'results.png', 'Resolution', 300); Example: Export a plot to an image file with a red background plot(rand(3)); exportgraphics(gca, 'results.png', 'BackgroundColor', [1 0 0]); Example: Export a plot to a grayscale image file plot(rand(3)); exportgraphics(gca, 'results.png', 'Colorspace', 'gray'); See also COPYGRAPHICS, EXPORTAPP Documentation for exportgraphics doc exportgraphics

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Risposte (1)

Kunal Kandhari
Kunal Kandhari il 14 Ago 2023
Hi Abu,
If you plan to include the graph in a LaTeX document, using vector-based formats like EPS or PDF is recommended. These formats retain the scalability of the graphics and ensure that they look sharp regardless of the zoom level or print size.
Hope it helps!


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