typeĮnable the image's transparency channel. Choose the argument type from the list below. Used to set a flag on an image indicating whether or not to use existing alphaĬhannel data, to create an alpha channel, or to perform other operations on the alpha channel. alpha type Gives control of the alpha/matte channel of an image. If the matrix determinant has a sufficiently small absolute value it is rejected. The cumulative effect of a sequence of -affine transformations can be accomplished by instead by a single -affine operation using the matrix equal to the product of the matrices of the individual transformations.Īn attempt is made to detect near-singular transformation matrices. Rotate clockwise about the origin (the upper left-hand corner) by an angle a by lettingĬ = cos( a), s = sin( a), and using the following. Translation by a displacement ( t x, t y) is accomplished like so: Scaling by the factors s x and s y in the x and y directions, respectively, is accomplished with the following. Therefore, four parameters suffice for rotation and scaling without translation. If the translation coefficients t x and t y are omotted they default to 0,0. The transformation matrix complies with the left-handed pixel coordinate system: positive x and y directions are rightward and downward, resp.

The parameters t x and t y subsequently shift the image pixels so that those that are moved out of the image area are cut off. The size of the resulting image is that of the smallest rectangle that contains the transformed source image. (2) the +adjoin option is given, or (3) a C-style integer format string is Multiple files if either (1) the output image's file format does not allow multi-image files, In summary, ImageMagick tries to write all images to one file, but will use

Will create a sequence of 17 images named my00morph.jpg, my01morph.jpg, my02morph.jpg. $magick> convert logo: rose: -morph 15 my%02dmorph.jpg These strings, such as ' %d' or ' %03d', are familiar to those who have used the standard printf()' C-library function. Including a C-style integer format string in the output filename will automagically enable +adjoin and are used to specify where the -scene number is placed in the filenames. Per file (for example, GIF, MIFF, and TIFF). To separate files, whether or not the file format allows multiple images Use +adjoin to force each image to be written Suffix, in order to make distinct names for each image. Modified by adding a -scene number before the Such, if more than one image needs to be written, the filename given is Image per file, and in that case ImageMagick is forced to write each image as a separate file. However, some formats, such as JPEG and PNG, do not support more than one Images of an image sequence into the given output file. adjoin Join images into a single multi-image file. Otherwise noted, each option is recognized by the commands convert, mogrify. Option name in the navigation bar above and you will go right to it. If you want a description of a particular option, click on the $ import -window '$(xdotool getwindowfocus -f)' /tmp/$(date +%F_%H%M%S_%N).Below is list of command-line options recognized by the ImageMagick command-line Import -window '$activeWinId' /tmp/$(date +%F_%H%M%S_%N).pngĪlternatively, the following should work regardless of EWMH support: To avoid overwriting previous screenshots, the current date is used as the filename.ĪctiveWinLine=$(xprop -root | grep '_NET_ACTIVE_WINDOW(WINDOW)') It works with EWMH/NetWM compatible X Window Managers. The following script takes a screenshot of the currently focused window. Import -window root -crop $x$h+$x+$y head_$i.png Xdpyinfo -ext XINERAMA | sed '/^ head #/!d s///' | As long as Xinerama information is available from the X server, the following will work: In this case, you may want to take screenshot of each physical screen individually. If the physical screens are different in height, you will find dead space in the screenshot. Xinerama-based multi-head setups have only one virtual screen. Import -window root -display :0.1 -screen /tmp/1.pngĬonvert +append /tmp/0.png /tmp/1.png screenshot.png Import -window root -display :0.0 -screen /tmp/0.png If you run twinview or dualhead, simply take the screenshot twice and use imagemagick to paste them together: Note: If you prefer graphicsmagick alternative, just prepend 'gm', e.g.

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