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graphics.md

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Graphics

Tools

  1. inkscape - when dealing with vectorized graphics
  2. blender - hard core 3D graphics and animations

Inkscape tricks

Over-all tutorial

http://www.microugly.com/inkscape-quickguide/

Latex in inkscape

texText is your solution

http://pav.iki.fi/software/textext/

Installation

http://www.timteatro.net/2010/08/05/textext-for-math-in-inkscape/

Errors may occur you try to make the equations in an already existing .svg file

It is possible to write the equations in one window, and copy them to the document of interest. Eventually on can save them as an .svg, and use Import in inkscape

Delete a node

  • DEL - Deletes only node
  • CTRL + DEL - Deletes node + path

Crop bitmap

  1. Draw a shape on your bitmap, masking the part you want to keep.
  2. Select the shape and the bitmap and use Object>Clip>Set.
  3. Select the resulting object and make a bitmap copy (Alt+B).
  4. Select the bitmap copy and trace.

https://answers.launchpad.net/inkscape/+question/183741

Vectorize

  1. Ctrl+click to select image (sometimes it's hidden as an object)
  2. Select bitmap
  3. Path
  4. Trace bitmap

If there are gradients, it is tricky, but doable, you can

  • Can do them yourself
  • Use Fill object (remebmber set high treshold)
  • Make linear gradient and add more points in the gradient

http://www.inkscapeforum.com/viewtopic.php?f=5&t=11314

http://vector-conversions.com/graphics/vector/vectorizing-full-color-images.html

http://graphicdesign.stackexchange.com/questions/3643/how-to-convert-a-raster-image-into-vector

http://vector.tutsplus.com/tutorials/illustration/tips-for-working-with-the-gradient-mesh-tool-in-illustrator/

Extract vectorized figures

See extractImages.sh on how to save the pages of a pdf document to svg files. When have the svg files, one can

  1. Open in inkscape
  2. Rubber select the figure: Shift+Drag
  3. Invert selection: !
  4. Delete all other: Del
  5. Resize in "Document properties": Ctrl+Shift+D
  6. Under Costum size, open Resize page to content, then Resize page to drawing or selection

Animated gifs

See pngToGif.sh on how to make a gif from a group of pngs.

Removing background from 3D matplotlib plots

Save as .eps Use inkscape to remove white background