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As these are vector graphics, the images can be scaled to any size, large or small, without loss of quality. Inkscape is a free program used to edit vector graphics. Inkscape provides a graphical user interface for the editing of such diagrams, using the standard Scalable Vector Graphics (SVG) format. [1]
However, Inkscape can help you to extract the photo. You can tell that a graphic is a raster image in Inkscape 0.47 if after selecting the graphic and choosing Object > Ungroup, you cannot select individual elements. Also, when you click the graphic Inkscape's status bar will show "Image" and its context menu will have an Image Properties item.
Cropping is the removal of unwanted outer areas from a photographic or illustrated image. The process usually consists of the removal of some of the peripheral areas of an image to remove extraneous visual data from the picture, improve its framing, change the aspect ratio, or accentuate or isolate the subject matter from its background.
There tends to be an unreasonably large margin left around the diagram's extents, so it is often a good idea to crop the image in a vector program such as Inkscape before uploading it. Leave a small margin of 1.6 pt.
Cropping creates a new image by selecting a desired rectangular portion from the image being cropped. The unwanted part of the image is discarded. Image cropping does not reduce the resolution of the area cropped. Best results are obtained when the original image has a high resolution. A primary reason for cropping is to improve the image ...
As of January 2006, Inkscape supports drawing connections (wires) between anchors on objects, which makes it much nicer for circuits, but still not a complete solution. Library of electrical symbols for diagramming with Inkscape. There is a (small but extensible) library of symbols available. Creating diagrams using this template is slightly ...
It is a particularly easy tool for creating vector graphics, though GeoGebra and C.a.R. may be better suited for mathematical graphics. Also, Inkscape's design concepts differ in some fundamental ways from SVG. For instance, in SVG element widths are applied before stroke widths, whereas in Inkscape they are applied after.
For the crop parameters, note that since we're going for a desired width, the size of the image being cropped from will vary depending on what crop_left and crop_right are set to. As such, these should be set before playing with crop_top and crop_bottom. All default to 0, which means nothing is cropped from that side.