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The original QRCode is a single piece (I don't dare put it here as it's actually a figure of Chinese pre-president ......) The most interesting phenomenon is that the reference bar has different pixel size as others. So I wrote a brief mathematica code and find out the following: QRCode Reader will only check the color of center points defined by the ...


I think the problem is sloppy documentation, rather than an implementation bug. A lot of current documentation is incomplete, misleading, or just plain wrong. Here is another example of bad documentation taken from HighlightImage. The following wrappers can be used ... $\qquad$Tooltip[e, label] attach an arbitrary tooltip to the element But ...


Using Graphics Using the data supplied by yourself, you could do something along the lines of: grs = Graphics[{White, Rotate[Disk[#1, #2], #3]}, Background -> Black, PlotRange -> {{-1, 1}, {-1, 1}}] & @@@ SheppLoganData; ImageAdjust@Image@Total@MapThread[ #2 ImageData[ ColorConvert[ Rasterize[Style[#, Antialiasing -> ...


This question was asked couple of times so let's keep the reference. GeoZoomLevel is an option for specifying the resolution at which to render a map. GeoGraphics[ Entity["City", {"Berlin", "Berlin", "Germany"}], GeoRange -> Quantity[10, "Kilometers"], GeoZoomLevel -> #, ImageSize -> 500 ] & /@ {10, Automatic, 15}


The workaround given in comments works. You should set CacheGraphics->False. i.e. Button[ Style[ SetAlphaChannel[ Graphics@Rectangle[], Graphics@Disk[]], CacheGraphics -> False ], Print[1] ] – ihojnicki Jul 13 at 19:59 One can put it in BaseStyle -> {CacheGraphics -> False} too.

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