[Tex/LaTex] How to check that image has valid size before `\includegraphics` is called

graphics

I run large computation in Mathematica, which generates thousands of image file in pdf. Few of them are too large to include in Latex and my build can fail in the middle.

Is there a way to check, in Latex, using the image file name, that its size and dimensions \maxdimen will not cause \includegraphics to fail? This way I can add a conditional in Latex and avoid loading these image files. Here is a MWE

\documentclass[10pt,notitlepage]{article}
\usepackage{graphicx}
\begin{document}
\includegraphics[width=\textwidth,height=\textheight,keepaspectratio]{image}
\end{document}

The above will fail on this file since the file size is too large.

What Latex code do I need to add to check the image size is valid before calling \includegraphics?

TL 2015, Linux

Update:

Thanks to cfr comment, using pdfinfo -box image.pdf gives

>pdfinfo -box image.pdf
Creator:        Wolfram Mathematica 10.1.0.0 for Microsoft Windows (64-bit) (March 23, 2015) Student Edition - Personal Use Only
Producer:       
CreationDate:   Tue Jul 21 13:15:48 2015
ModDate:        Tue Jul 21 13:15:48 2015
Tagged:         no
Form:           none
Pages:          1
Encrypted:      no
Page size:      504 x 18988 pts
Page rot:       0
MediaBox:           0.00     0.00   504.00 18988.00
CropBox:            0.00     0.00   504.00 18988.00
BleedBox:           0.00     0.00   504.00 18988.00
TrimBox:            0.00     0.00   504.00 18988.00
ArtBox:             0.00     0.00   504.00 18988.00
File size:      337034 bytes
Optimized:      no
PDF version:    1.5
>

I need to figure how to do this inside the Latex document and get the dimension to check against \maxdimen and add Latex conditional to avoid loading this particular image. This has to be done in Latex, since the Latex files are also generated automatically and the image files as well, all by running scripts. So this is all have to be automated.

It will be nice if Latex provides a macro/package that will obtain the image dimensions before loading.

Best Answer

It seems rather pointless to include an image like this but anyway tex can allow boxes bigger than \maxdimen so long as you never do any arithmetic on the lengths:

\documentclass[10pt,notitlepage]{article}
\usepackage{graphicx}

\begin{document}


\centering
\mbox{\pdfimage height \textheight{image.pdf}}

\end{document}

Related Solutions

[Tex/LaTex] Image from \includegraphics showing in wrong image size

When you take a screenshot or export a figure from Matlab as a rasterised image,usually the resulting image file will not contain any resolution information (or "pixel density", usually measured in "dots per inch", or "DPI") in its metadata. When you include such an image in a LaTeX document using \includegraphics, a resolution of 72 DPI will be assumed. For example, that means that a screenshot that has a size of 1440x900 px will have a width of 1440 px / 72 px per in = 20 in = 51 cm in your PDF or DVI, so it will most likely be too big for your document. A computer monitor with a horizontal width of 15 in (= 38 cm) that is operated at a screen size of 1440x900 px has a resolution of 1440 px / 15 in = 96 dpi. If you want your screenshot to have the same size (in this case a width of 38 cm) both on your computer screen and in the printed document, you need find a way of letting LaTeX know that the resolution of the image is 96 DPI. There are a number of ways you can do this:

As an option to includegraphics:
If you're compiling your document using pdflatex, you can specify the resolution of the image by loading it using \includegraphics [resolution=<resolution in DPI>] {<filename>}. This will only work if no resolution information is included in the image.

By setting the image metadata using GIMP:
Go to Image -> Scale Image... and adjust the X and Y resolution after making sure pixels/in is chosen in the drop down menu. Then save your image.

By setting the image metadata using IrfanView:
In IrfanView 4.30, you can click Image - Information (or press I) to show the metadata of the image. The fifth row is called Resolution and should contain two fields in which you can set the horizontal and vertical resolution in dots per inch. By pressing the button Change, the new resolution will be set. The "physical" size of the image in cm and inch, which is obtained by multiplying the size in pixels with the resolution, is shown in the eigth line, called Print Size (from DPI). You can then include the image in your LaTeX document by calling \includegraphics {<filename>} without any extra options.

By setting the image metadata using ImageMagick:
On Linux systems, frequently the ImageMagick programs are already present or can easily be installed. You can then set the resolution information by calling convert <original file name> -density <resolution> -units PixelsPerInch <new file name> in a shell. You can then include the image in your LaTeX document by calling \includegraphics {<filename>} without any extra options.

[Tex/LaTex] how to set the canvas and font size in TikZ

For the sizes, you can use the current bounding box together with \pgfgetlastxy:

\documentclass{standalone}
\usepackage{tikz}

\newcommand*{\ExtractCoordinate}[3]{\path (#1); \pgfgetlastxy{#2}{#3};}%

\newdimen\tlx
\newdimen\tlx
\newdimen\brx
\newdimen\bry


\begin{document}
\begin{tikzpicture}
    \draw (-3,-1) rectangle (3,1) (-2,-2) rectangle (2,2);
    \foreach \x in {north west,south west,south east,north east}
    {   \fill[red] (current bounding box.\x) circle (0.01);
    }
    \ExtractCoordinate{current bounding box.north west}{\tlx}{\tly}
    \ExtractCoordinate{current bounding box.south east}{\brx}{\bry}
    \pgfmathsetmacro{\myheight}{(+\tly-\bry)/28.452755}
    \pgfmathsetmacro{\mywidth}{(-\tlx+\brx)/28.452755}
    \node[below right] at  (-2,1) {height: \myheight\ cm};
    \node[above left] at  (2,-1) {width: \mywidth\ cm};
\end{tikzpicture}
\end{document}

enter image description here

Edit 1: Ah, now I get it. Here is a still not automatic version. You set two commands in each tikzpicture: \maximumdimensions{4}{3}, which is the desired width and height, at the beginning of the picture. \getscalingfactors which will draw nodes with a recommended scaling factor in the middle of your picture if the image if to high/wide:

\documentclass{scrartcl}
\usepackage{tikz}
\usepackage{lipsum}
\usepackage{xifthen}

\newcommand*{\ExtractCoordinate}[3]{\path (#1); \pgfgetlastxy{#2}{#3};}%

\newdimen\tlx
\newdimen\tlx
\newdimen\brx
\newdimen\bry
\def\xscalefactor{}
\def\yscalefactor{}
\parindent0mm

\newcommand{\getscalingfactors}{%
    \ExtractCoordinate{current bounding box.north west}{\tlx}{\tly}
    \ExtractCoordinate{current bounding box.south east}{\brx}{\bry}
    \pgfmathsetmacro{\myheight}{(+\tly-\bry)/28.452755}
    \pgfmathsetmacro{\mywidth}{(-\tlx+\brx)/28.452755}
    \pgfmathsetmacro{\xsf}{\maxwidth/\mywidth}
    \pgfmathsetmacro{\ysf}{\maxheight/\myheight}
    \global\edef\xscalefactor{\xsf}
    \global\edef\yscalefactor{\ysf}
    \pgfmathtruncatemacro{\xsfc}{\xsf*10000}
    \pgfmathtruncatemacro{\ysfc}{\ysf*10000}
    \ifthenelse{\xsfc > 10000}{}{\node[fill=white,above] at (current bounding box.center) {x-s: \xsf};}
    \ifthenelse{\ysfc > 10000}{}{\node[fill=white,below] at (current bounding box.center) {y-s: \ysf};}
}

\newcommand{\maximumdimensions}[2]{% width, height
\global\edef\maxwidth{#1} % in cm
\global\edef\maxheight{#2} % in cm
}

\begin{document}

\begin{tikzpicture}[scale=1]
    \maximumdimensions{4}{3}

    \draw[fill=orange] (-3,-1) rectangle (3,1) (-2,-2) rectangle (2,2);

    \getscalingfactors
\end{tikzpicture}

\lipsum[1]

\begin{tikzpicture}[scale=1]
    \maximumdimensions{4}{3}

    \draw[fill=orange!50!gray] (0,0) circle (3);
    \draw[fill=red!50!gray] (3,1) circle (1);
    \draw[fill=blue!50!gray] (-2,2) circle (1);
    \draw[fill=green!50!gray] (-3,-2) circle (1);
    \draw[fill=yellow!50!gray] (2,-1) circle (1);

    \getscalingfactors
\end{tikzpicture}

\end{document}

enter image description here

If you scale the picture down enough, the nodes inside the picture vanish: \begin{tikzpicture}[scale=0.66] and \begin{tikzpicture}[scale=0.497]

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Image from \includegraphics showing in wrong image size

[Tex/LaTex] how to set the canvas and font size in TikZ

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